diff --git a/src/compiler/_namespaces/ts.ts b/src/compiler/_namespaces/ts.ts
index e193b8f35adde..85c71d4d7f1f6 100644
--- a/src/compiler/_namespaces/ts.ts
+++ b/src/compiler/_namespaces/ts.ts
@@ -55,7 +55,7 @@ export * from "../transformers/generators";
 export * from "../transformers/module/module";
 export * from "../transformers/module/system";
 export * from "../transformers/module/esnextAnd2015";
-export * from "../transformers/module/node";
+export * from "../transformers/module/impliedNodeFormatDependent";
 export * from "../transformers/declarations/diagnostics";
 export * from "../transformers/declarations";
 export * from "../transformer";
diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index fe102a2591205..d757890fa641e 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -60,6 +60,7 @@ import {
     canHaveJSDoc,
     canHaveLocals,
     canHaveModifiers,
+    canHaveModuleSpecifier,
     canHaveSymbol,
     canUsePropertyAccess,
     cartesianProduct,
@@ -3585,27 +3586,36 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             || isNamespaceExport(node));
     }
 
-    function getUsageModeForExpression(usage: Expression) {
-        return isStringLiteralLike(usage) ? host.getModeForUsageLocation(getSourceFileOfNode(usage), usage) : undefined;
+    function getEmitSyntaxForModuleSpecifierExpression(usage: Expression) {
+        return isStringLiteralLike(usage) ? host.getEmitSyntaxForUsageLocation(getSourceFileOfNode(usage), usage) : undefined;
     }
 
     function isESMFormatImportImportingCommonjsFormatFile(usageMode: ResolutionMode, targetMode: ResolutionMode) {
         return usageMode === ModuleKind.ESNext && targetMode === ModuleKind.CommonJS;
     }
 
-    function isOnlyImportedAsDefault(usage: Expression) {
-        const usageMode = getUsageModeForExpression(usage);
-        return usageMode === ModuleKind.ESNext && endsWith((usage as StringLiteralLike).text, Extension.Json);
+    function isOnlyImportableAsDefault(usage: Expression) {
+        // In Node.js, JSON modules don't get named exports
+        if (ModuleKind.Node16 <= moduleKind && moduleKind <= ModuleKind.NodeNext) {
+            const usageMode = getEmitSyntaxForModuleSpecifierExpression(usage);
+            return usageMode === ModuleKind.ESNext && endsWith((usage as StringLiteralLike).text, Extension.Json);
+        }
+        return false;
     }
 
     function canHaveSyntheticDefault(file: SourceFile | undefined, moduleSymbol: Symbol, dontResolveAlias: boolean, usage: Expression) {
-        const usageMode = file && getUsageModeForExpression(usage);
-        if (file && usageMode !== undefined && ModuleKind.Node16 <= moduleKind && moduleKind <= ModuleKind.NodeNext) {
-            const result = isESMFormatImportImportingCommonjsFormatFile(usageMode, file.impliedNodeFormat);
-            if (usageMode === ModuleKind.ESNext || result) {
-                return result;
+        const usageMode = file && getEmitSyntaxForModuleSpecifierExpression(usage);
+        if (file && usageMode !== undefined) {
+            const targetMode = host.getImpliedNodeFormatForEmit(file);
+            if (usageMode === ModuleKind.ESNext && targetMode === ModuleKind.CommonJS && ModuleKind.Node16 <= moduleKind && moduleKind <= ModuleKind.NodeNext) {
+                // In Node.js, CommonJS modules always have a synthetic default when imported into ESM
+                return true;
+            }
+            if (usageMode === ModuleKind.ESNext && targetMode === ModuleKind.ESNext) {
+                // No matter what the `module` setting is, if we're confident that both files
+                // are ESM, there cannot be a synthetic default.
+                return false;
             }
-            // fallthrough on cjs usages so we imply defaults for interop'd imports, too
         }
         if (!allowSyntheticDefaultImports) {
             return false;
@@ -3658,7 +3668,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         if (!specifier) {
             return exportDefaultSymbol;
         }
-        const hasDefaultOnly = isOnlyImportedAsDefault(specifier);
+        const hasDefaultOnly = isOnlyImportableAsDefault(specifier);
         const hasSyntheticDefault = canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias, specifier);
         if (!exportDefaultSymbol && !hasSyntheticDefault && !hasDefaultOnly) {
             if (hasExportAssignmentSymbol(moduleSymbol) && !allowSyntheticDefaultImports) {
@@ -3837,7 +3847,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 let symbolFromModule = getExportOfModule(targetSymbol, name, specifier, dontResolveAlias);
                 if (symbolFromModule === undefined && name.escapedText === InternalSymbolName.Default) {
                     const file = moduleSymbol.declarations?.find(isSourceFile);
-                    if (isOnlyImportedAsDefault(moduleSpecifier) || canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias, moduleSpecifier)) {
+                    if (isOnlyImportableAsDefault(moduleSpecifier) || canHaveSyntheticDefault(file, moduleSymbol, dontResolveAlias, moduleSpecifier)) {
                         symbolFromModule = resolveExternalModuleSymbol(moduleSymbol, dontResolveAlias) || resolveSymbol(moduleSymbol, dontResolveAlias);
                     }
                 }
@@ -4540,7 +4550,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 findAncestor(location, isImportDeclaration)?.moduleSpecifier ||
                 findAncestor(location, isExternalModuleImportEqualsDeclaration)?.moduleReference.expression ||
                 findAncestor(location, isExportDeclaration)?.moduleSpecifier;
-        const mode = contextSpecifier && isStringLiteralLike(contextSpecifier) ? host.getModeForUsageLocation(currentSourceFile, contextSpecifier) : currentSourceFile.impliedNodeFormat;
+        const mode = contextSpecifier && isStringLiteralLike(contextSpecifier)
+            ? host.getModeForUsageLocation(currentSourceFile, contextSpecifier)
+            : host.getDefaultResolutionModeForFile(currentSourceFile);
         const moduleResolutionKind = getEmitModuleResolutionKind(compilerOptions);
         const resolvedModule = host.getResolvedModule(currentSourceFile, moduleReference, mode)?.resolvedModule;
         const resolutionDiagnostic = resolvedModule && getResolutionDiagnostic(compilerOptions, resolvedModule, currentSourceFile);
@@ -4827,7 +4839,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 }
 
                 const targetFile = moduleSymbol?.declarations?.find(isSourceFile);
-                const isEsmCjsRef = targetFile && isESMFormatImportImportingCommonjsFormatFile(getUsageModeForExpression(reference), targetFile.impliedNodeFormat);
+                const isEsmCjsRef = targetFile && isESMFormatImportImportingCommonjsFormatFile(getEmitSyntaxForModuleSpecifierExpression(reference), host.getImpliedNodeFormatForEmit(targetFile));
                 if (getESModuleInterop(compilerOptions) || isEsmCjsRef) {
                     let sigs = getSignaturesOfStructuredType(type, SignatureKind.Call);
                     if (!sigs || !sigs.length) {
@@ -7673,8 +7685,12 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 }
                 return getSourceFileOfNode(getNonAugmentationDeclaration(symbol)!).fileName; // A resolver may not be provided for baselines and errors - in those cases we use the fileName in full
             }
+            const enclosingDeclaration = getOriginalNode(context.enclosingDeclaration);
+            const originalModuleSpecifier = canHaveModuleSpecifier(enclosingDeclaration) ? tryGetModuleSpecifierFromDeclaration(enclosingDeclaration) : undefined;
             const contextFile = context.enclosingFile;
-            const resolutionMode = overrideImportMode || contextFile?.impliedNodeFormat;
+            const resolutionMode = overrideImportMode
+                || originalModuleSpecifier && host.getModeForUsageLocation(contextFile, originalModuleSpecifier)
+                || contextFile && host.getDefaultResolutionModeForFile(contextFile);
             const cacheKey = createModeAwareCacheKey(contextFile.path, resolutionMode);
             const links = getSymbolLinks(symbol);
             let specifier = links.specifierCache && links.specifierCache.get(cacheKey);
@@ -35925,7 +35941,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     }
 
     function getTypeWithSyntheticDefaultOnly(type: Type, symbol: Symbol, originalSymbol: Symbol, moduleSpecifier: Expression) {
-        const hasDefaultOnly = isOnlyImportedAsDefault(moduleSpecifier);
+        const hasDefaultOnly = isOnlyImportableAsDefault(moduleSpecifier);
         if (hasDefaultOnly && type && !isErrorType(type)) {
             const synthType = type as SyntheticDefaultModuleType;
             if (!synthType.defaultOnlyType) {
@@ -42566,7 +42582,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
 
     function checkCollisionWithRequireExportsInGeneratedCode(node: Node, name: Identifier | undefined) {
         // No need to check for require or exports for ES6 modules and later
-        if (moduleKind >= ModuleKind.ES2015 && !(moduleKind >= ModuleKind.Node16 && getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS)) {
+        if (host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) >= ModuleKind.ES2015) {
             return;
         }
 
@@ -44450,7 +44466,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
     function checkClassNameCollisionWithObject(name: Identifier): void {
         if (
             languageVersion >= ScriptTarget.ES5 && name.escapedText === "Object"
-            && (moduleKind < ModuleKind.ES2015 || getSourceFileOfNode(name).impliedNodeFormat === ModuleKind.CommonJS)
+            && host.getEmitModuleFormatOfFile(getSourceFileOfNode(name)) < ModuleKind.ES2015
         ) {
             error(name, Diagnostics.Class_name_cannot_be_Object_when_targeting_ES5_with_module_0, ModuleKind[moduleKind]); // https://github.com/Microsoft/TypeScript/issues/17494
         }
@@ -45785,7 +45801,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 if (
                     compilerOptions.verbatimModuleSyntax &&
                     node.parent.kind === SyntaxKind.SourceFile &&
-                    (moduleKind === ModuleKind.CommonJS || node.parent.impliedNodeFormat === ModuleKind.CommonJS)
+                    host.getEmitModuleFormatOfFile(node.parent) === ModuleKind.CommonJS
                 ) {
                     const exportModifier = node.modifiers?.find(m => m.kind === SyntaxKind.ExportKeyword);
                     if (exportModifier) {
@@ -46065,10 +46081,22 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                     compilerOptions.verbatimModuleSyntax &&
                     node.kind !== SyntaxKind.ImportEqualsDeclaration &&
                     !isInJSFile(node) &&
-                    (moduleKind === ModuleKind.CommonJS || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS)
+                    host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) === ModuleKind.CommonJS
                 ) {
                     error(node, Diagnostics.ESM_syntax_is_not_allowed_in_a_CommonJS_module_when_verbatimModuleSyntax_is_enabled);
                 }
+                else if (
+                    moduleKind === ModuleKind.Preserve &&
+                    node.kind !== SyntaxKind.ImportEqualsDeclaration &&
+                    node.kind !== SyntaxKind.VariableDeclaration &&
+                    host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) === ModuleKind.CommonJS
+                ) {
+                    // In `--module preserve`, ESM input syntax emits ESM output syntax, but there will be times
+                    // when we look at the `impliedNodeFormat` of this file and decide it's CommonJS. To avoid
+                    // that inconsistency, we disallow ESM syntax in files that are unambiguously CommonJS in
+                    // this mode.
+                    error(node, Diagnostics.ESM_syntax_is_not_allowed_in_a_CommonJS_module_when_module_is_set_to_preserve);
+                }
             }
 
             if (isImportSpecifier(node)) {
@@ -46117,7 +46145,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             node.kind === SyntaxKind.ImportSpecifier &&
             idText(node.propertyName || node.name) === "default" &&
             getESModuleInterop(compilerOptions) &&
-            moduleKind !== ModuleKind.System && (moduleKind < ModuleKind.ES2015 || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS)
+            host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) < ModuleKind.System
         ) {
             checkExternalEmitHelpers(node, ExternalEmitHelpers.ImportDefault);
         }
@@ -46138,7 +46166,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 return; // Other grammar checks do not apply to type-only imports with resolution mode assertions
             }
 
-            const mode = (moduleKind === ModuleKind.NodeNext) && declaration.moduleSpecifier && getUsageModeForExpression(declaration.moduleSpecifier);
+            const mode = (moduleKind === ModuleKind.NodeNext) && declaration.moduleSpecifier && getEmitSyntaxForModuleSpecifierExpression(declaration.moduleSpecifier);
             if (mode !== ModuleKind.ESNext && moduleKind !== ModuleKind.ESNext && moduleKind !== ModuleKind.Preserve) {
                 const message = isImportAttributes
                     ? moduleKind === ModuleKind.NodeNext
@@ -46182,7 +46210,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 if (importClause.namedBindings) {
                     if (importClause.namedBindings.kind === SyntaxKind.NamespaceImport) {
                         checkImportBinding(importClause.namedBindings);
-                        if (moduleKind !== ModuleKind.System && (moduleKind < ModuleKind.ES2015 || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS) && getESModuleInterop(compilerOptions)) {
+                        if (host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) < ModuleKind.System && getESModuleInterop(compilerOptions)) {
                             // import * as ns from "foo";
                             checkExternalEmitHelpers(node, ExternalEmitHelpers.ImportStar);
                         }
@@ -46231,8 +46259,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 }
             }
             else {
-                if (moduleKind >= ModuleKind.ES2015 && moduleKind !== ModuleKind.Preserve && getSourceFileOfNode(node).impliedNodeFormat === undefined && !node.isTypeOnly && !(node.flags & NodeFlags.Ambient)) {
-                    // Import equals declaration is deprecated in es6 or above
+                if (ModuleKind.ES2015 <= moduleKind && moduleKind <= ModuleKind.ESNext && !node.isTypeOnly && !(node.flags & NodeFlags.Ambient)) {
+                    // Import equals declaration cannot be emitted as ESM
                     grammarErrorOnNode(node, Diagnostics.Import_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_import_Asterisk_as_ns_from_mod_import_a_from_mod_import_d_from_mod_or_another_module_format_instead);
                 }
             }
@@ -46272,7 +46300,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                 else if (node.exportClause) {
                     checkAliasSymbol(node.exportClause);
                 }
-                if (moduleKind !== ModuleKind.System && (moduleKind < ModuleKind.ES2015 || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS)) {
+                if (host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) < ModuleKind.System) {
                     if (node.exportClause) {
                         // export * as ns from "foo";
                         // For ES2015 modules, we emit it as a pair of `import * as a_1 ...; export { a_1 as ns }` and don't need the helper.
@@ -46331,8 +46359,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         else {
             if (
                 getESModuleInterop(compilerOptions) &&
-                moduleKind !== ModuleKind.System &&
-                (moduleKind < ModuleKind.ES2015 || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS) &&
+                host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) < ModuleKind.System &&
                 idText(node.propertyName || node.name) === "default"
             ) {
                 checkExternalEmitHelpers(node, ExternalEmitHelpers.ImportDefault);
@@ -46373,7 +46400,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         const isIllegalExportDefaultInCJS = !node.isExportEquals &&
             !(node.flags & NodeFlags.Ambient) &&
             compilerOptions.verbatimModuleSyntax &&
-            (moduleKind === ModuleKind.CommonJS || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS);
+            host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) === ModuleKind.CommonJS;
 
         if (node.expression.kind === SyntaxKind.Identifier) {
             const id = node.expression as Identifier;
@@ -46471,8 +46498,8 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             if (
                 moduleKind >= ModuleKind.ES2015 &&
                 moduleKind !== ModuleKind.Preserve &&
-                ((node.flags & NodeFlags.Ambient && getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.ESNext) ||
-                    (!(node.flags & NodeFlags.Ambient) && getSourceFileOfNode(node).impliedNodeFormat !== ModuleKind.CommonJS))
+                ((node.flags & NodeFlags.Ambient && host.getImpliedNodeFormatForEmit(getSourceFileOfNode(node)) === ModuleKind.ESNext) ||
+                    (!(node.flags & NodeFlags.Ambient) && host.getImpliedNodeFormatForEmit(getSourceFileOfNode(node)) !== ModuleKind.CommonJS))
             ) {
                 // export assignment is not supported in es6 modules
                 grammarErrorOnNode(node, Diagnostics.Export_assignment_cannot_be_used_when_targeting_ECMAScript_modules_Consider_using_export_default_or_another_module_format_instead);
@@ -49199,7 +49226,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                             // ModuleDeclaration needs to be checked that it is uninstantiated later
                             node.kind !== SyntaxKind.ModuleDeclaration &&
                             node.parent.kind === SyntaxKind.SourceFile &&
-                            (moduleKind === ModuleKind.CommonJS || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS)
+                            host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) === ModuleKind.CommonJS
                         ) {
                             return grammarErrorOnNode(modifier, Diagnostics.A_top_level_export_modifier_cannot_be_used_on_value_declarations_in_a_CommonJS_module_when_verbatimModuleSyntax_is_enabled);
                         }
@@ -50358,7 +50385,7 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
         }
 
         if (
-            (moduleKind < ModuleKind.ES2015 || getSourceFileOfNode(node).impliedNodeFormat === ModuleKind.CommonJS) && moduleKind !== ModuleKind.System &&
+            host.getEmitModuleFormatOfFile(getSourceFileOfNode(node)) < ModuleKind.System &&
             !(node.parent.parent.flags & NodeFlags.Ambient) && hasSyntacticModifier(node.parent.parent, ModifierFlags.Export)
         ) {
             checkESModuleMarker(node.name);
@@ -50988,6 +51015,8 @@ function createBasicNodeBuilderModuleSpecifierResolutionHost(host: TypeCheckerHo
         fileExists: fileName => host.fileExists(fileName),
         getFileIncludeReasons: () => host.getFileIncludeReasons(),
         readFile: host.readFile ? (fileName => host.readFile!(fileName)) : undefined,
+        getDefaultResolutionModeForFile: file => host.getDefaultResolutionModeForFile(file),
+        getModeForResolutionAtIndex: (file, index) => host.getModeForResolutionAtIndex(file, index),
     };
 }
 
diff --git a/src/compiler/diagnosticMessages.json b/src/compiler/diagnosticMessages.json
index 0173f67bbb910..272cd5bd4f524 100644
--- a/src/compiler/diagnosticMessages.json
+++ b/src/compiler/diagnosticMessages.json
@@ -967,6 +967,10 @@
         "category": "Error",
         "code": 1292
     },
+    "ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.": {
+        "category": "Error",
+        "code": 1293
+    },
 
     "'with' statements are not allowed in an async function block.": {
         "category": "Error",
diff --git a/src/compiler/emitter.ts b/src/compiler/emitter.ts
index 77a089585e6fc..6699fe5ad3cfc 100644
--- a/src/compiler/emitter.ts
+++ b/src/compiler/emitter.ts
@@ -130,6 +130,7 @@ import {
     getEmitFlags,
     getEmitHelpers,
     getEmitModuleKind,
+    getEmitModuleResolutionKind,
     getEmitScriptTarget,
     getExternalModuleName,
     getIdentifierTypeArguments,
@@ -800,6 +801,7 @@ export function emitFiles(resolver: EmitResolver, host: EmitHost, targetSourceFi
             newLine: compilerOptions.newLine,
             noEmitHelpers: compilerOptions.noEmitHelpers,
             module: getEmitModuleKind(compilerOptions),
+            moduleResolution: getEmitModuleResolutionKind(compilerOptions),
             target: getEmitScriptTarget(compilerOptions),
             sourceMap: compilerOptions.sourceMap,
             inlineSourceMap: compilerOptions.inlineSourceMap,
@@ -867,6 +869,7 @@ export function emitFiles(resolver: EmitResolver, host: EmitHost, targetSourceFi
                 newLine: compilerOptions.newLine,
                 noEmitHelpers: true,
                 module: compilerOptions.module,
+                moduleResolution: compilerOptions.moduleResolution,
                 target: compilerOptions.target,
                 sourceMap: !forceDtsEmit && compilerOptions.declarationMap,
                 inlineSourceMap: compilerOptions.inlineSourceMap,
diff --git a/src/compiler/factory/utilities.ts b/src/compiler/factory/utilities.ts
index 28c8769b4013c..731c13d78ec60 100644
--- a/src/compiler/factory/utilities.ts
+++ b/src/compiler/factory/utilities.ts
@@ -53,10 +53,12 @@ import {
     getAllAccessorDeclarations,
     getEmitFlags,
     getEmitHelpers,
+    getEmitModuleFormatOfFileWorker,
     getEmitModuleKind,
     getESModuleInterop,
     getExternalModuleName,
     getExternalModuleNameFromPath,
+    getImpliedNodeFormatForEmitWorker,
     getJSDocType,
     getJSDocTypeTag,
     getModifiers,
@@ -712,7 +714,7 @@ export function createExternalHelpersImportDeclarationIfNeeded(nodeFactory: Node
     if (compilerOptions.importHelpers && isEffectiveExternalModule(sourceFile, compilerOptions)) {
         let namedBindings: NamedImportBindings | undefined;
         const moduleKind = getEmitModuleKind(compilerOptions);
-        if ((moduleKind >= ModuleKind.ES2015 && moduleKind <= ModuleKind.ESNext) || sourceFile.impliedNodeFormat === ModuleKind.ESNext) {
+        if ((moduleKind >= ModuleKind.ES2015 && moduleKind <= ModuleKind.ESNext) || getImpliedNodeFormatForEmitWorker(sourceFile, compilerOptions) === ModuleKind.ESNext) {
             // use named imports
             const helpers = getEmitHelpers(sourceFile);
             if (helpers) {
@@ -769,10 +771,8 @@ export function getOrCreateExternalHelpersModuleNameIfNeeded(factory: NodeFactor
             return externalHelpersModuleName;
         }
 
-        const moduleKind = getEmitModuleKind(compilerOptions);
         let create = (hasExportStarsToExportValues || (getESModuleInterop(compilerOptions) && hasImportStarOrImportDefault))
-            && moduleKind !== ModuleKind.System
-            && (moduleKind < ModuleKind.ES2015 || node.impliedNodeFormat === ModuleKind.CommonJS);
+            && getEmitModuleFormatOfFileWorker(node, compilerOptions) < ModuleKind.System;
         if (!create) {
             const helpers = getEmitHelpers(node);
             if (helpers) {
diff --git a/src/compiler/moduleSpecifiers.ts b/src/compiler/moduleSpecifiers.ts
index cff212dcaeb11..e35047d716f5f 100644
--- a/src/compiler/moduleSpecifiers.ts
+++ b/src/compiler/moduleSpecifiers.ts
@@ -36,9 +36,9 @@ import {
     getBaseFileName,
     GetCanonicalFileName,
     getConditions,
+    getDefaultResolutionModeForFileWorker,
     getDirectoryPath,
     getEmitModuleResolutionKind,
-    getModeForResolutionAtIndex,
     getModuleNameStringLiteralAt,
     getModuleSpecifierEndingPreference,
     getNodeModulePathParts,
@@ -136,12 +136,13 @@ export interface ModuleSpecifierPreferences {
     /**
      * @param syntaxImpliedNodeFormat Used when the import syntax implies ESM or CJS irrespective of the mode of the file.
      */
-    getAllowedEndingsInPreferredOrder(syntaxImpliedNodeFormat?: SourceFile["impliedNodeFormat"]): ModuleSpecifierEnding[];
+    getAllowedEndingsInPreferredOrder(syntaxImpliedNodeFormat?: ResolutionMode): ModuleSpecifierEnding[];
 }
 
 /** @internal */
 export function getModuleSpecifierPreferences(
     { importModuleSpecifierPreference, importModuleSpecifierEnding }: UserPreferences,
+    host: Pick<ModuleSpecifierResolutionHost, "getDefaultResolutionModeForFile">,
     compilerOptions: CompilerOptions,
     importingSourceFile: Pick<SourceFile, "fileName" | "impliedNodeFormat">,
     oldImportSpecifier?: string,
@@ -156,8 +157,10 @@ export function getModuleSpecifierPreferences(
             importModuleSpecifierPreference === "project-relative" ? RelativePreference.ExternalNonRelative :
             RelativePreference.Shortest,
         getAllowedEndingsInPreferredOrder: syntaxImpliedNodeFormat => {
-            const preferredEnding = syntaxImpliedNodeFormat !== importingSourceFile.impliedNodeFormat ? getPreferredEnding(syntaxImpliedNodeFormat) : filePreferredEnding;
-            if ((syntaxImpliedNodeFormat ?? importingSourceFile.impliedNodeFormat) === ModuleKind.ESNext) {
+            const impliedNodeFormat = getDefaultResolutionModeForFile(importingSourceFile, host, compilerOptions);
+            const preferredEnding = syntaxImpliedNodeFormat !== impliedNodeFormat ? getPreferredEnding(syntaxImpliedNodeFormat) : filePreferredEnding;
+            const moduleResolution = getEmitModuleResolutionKind(compilerOptions);
+            if ((syntaxImpliedNodeFormat ?? impliedNodeFormat) === ModuleKind.ESNext && ModuleResolutionKind.Node16 <= moduleResolution && moduleResolution <= ModuleResolutionKind.NodeNext) {
                 if (shouldAllowImportingTsExtension(compilerOptions, importingSourceFile.fileName)) {
                     return [ModuleSpecifierEnding.TsExtension, ModuleSpecifierEnding.JsExtension];
                 }
@@ -197,7 +200,7 @@ export function getModuleSpecifierPreferences(
         }
         return getModuleSpecifierEndingPreference(
             importModuleSpecifierEnding,
-            resolutionMode ?? importingSourceFile.impliedNodeFormat,
+            resolutionMode ?? getDefaultResolutionModeForFile(importingSourceFile, host, compilerOptions),
             compilerOptions,
             isFullSourceFile(importingSourceFile) ? importingSourceFile : undefined,
         );
@@ -218,7 +221,7 @@ export function updateModuleSpecifier(
     oldImportSpecifier: string,
     options: ModuleSpecifierOptions = {},
 ): string | undefined {
-    const res = getModuleSpecifierWorker(compilerOptions, importingSourceFile, importingSourceFileName, toFileName, host, getModuleSpecifierPreferences({}, compilerOptions, importingSourceFile, oldImportSpecifier), {}, options);
+    const res = getModuleSpecifierWorker(compilerOptions, importingSourceFile, importingSourceFileName, toFileName, host, getModuleSpecifierPreferences({}, host, compilerOptions, importingSourceFile, oldImportSpecifier), {}, options);
     if (res === oldImportSpecifier) return undefined;
     return res;
 }
@@ -238,7 +241,7 @@ export function getModuleSpecifier(
     host: ModuleSpecifierResolutionHost,
     options: ModuleSpecifierOptions = {},
 ): string {
-    return getModuleSpecifierWorker(compilerOptions, importingSourceFile, importingSourceFileName, toFileName, host, getModuleSpecifierPreferences({}, compilerOptions, importingSourceFile), {}, options);
+    return getModuleSpecifierWorker(compilerOptions, importingSourceFile, importingSourceFileName, toFileName, host, getModuleSpecifierPreferences({}, host, compilerOptions, importingSourceFile), {}, options);
 }
 
 /** @internal */
@@ -268,7 +271,7 @@ function getModuleSpecifierWorker(
     const info = getInfo(importingSourceFileName, host);
     const modulePaths = getAllModulePaths(info, toFileName, host, userPreferences, options);
     return firstDefined(modulePaths, modulePath => tryGetModuleNameAsNodeModule(modulePath, info, importingSourceFile, host, compilerOptions, userPreferences, /*packageNameOnly*/ undefined, options.overrideImportMode)) ||
-        getLocalModuleSpecifier(toFileName, info, compilerOptions, host, options.overrideImportMode || importingSourceFile.impliedNodeFormat, preferences);
+        getLocalModuleSpecifier(toFileName, info, compilerOptions, host, options.overrideImportMode || getDefaultResolutionModeForFile(importingSourceFile, host, compilerOptions), preferences);
 }
 
 /** @internal */
@@ -388,7 +391,7 @@ export function getLocalModuleSpecifierBetweenFileNames(
         compilerOptions,
         host,
         importMode,
-        getModuleSpecifierPreferences({}, compilerOptions, importingFile),
+        getModuleSpecifierPreferences({}, host, compilerOptions, importingFile),
     );
 }
 
@@ -402,7 +405,7 @@ function computeModuleSpecifiers(
     forAutoImport: boolean,
 ): readonly string[] {
     const info = getInfo(importingSourceFile.fileName, host);
-    const preferences = getModuleSpecifierPreferences(userPreferences, compilerOptions, importingSourceFile);
+    const preferences = getModuleSpecifierPreferences(userPreferences, host, compilerOptions, importingSourceFile);
     const existingSpecifier = isFullSourceFile(importingSourceFile) && forEach(modulePaths, modulePath =>
         forEach(
             host.getFileIncludeReasons().get(toPath(modulePath.path, host.getCurrentDirectory(), info.getCanonicalFileName)),
@@ -410,7 +413,11 @@ function computeModuleSpecifiers(
                 if (reason.kind !== FileIncludeKind.Import || reason.file !== importingSourceFile.path) return undefined;
                 // If the candidate import mode doesn't match the mode we're generating for, don't consider it
                 // TODO: maybe useful to keep around as an alternative option for certain contexts where the mode is overridable
-                if (importingSourceFile.impliedNodeFormat && importingSourceFile.impliedNodeFormat !== getModeForResolutionAtIndex(importingSourceFile, reason.index, compilerOptions)) return undefined;
+                const existingMode = host.getModeForResolutionAtIndex(importingSourceFile, reason.index);
+                const targetMode = options.overrideImportMode ?? host.getDefaultResolutionModeForFile(importingSourceFile);
+                if (existingMode !== targetMode && existingMode !== undefined && targetMode !== undefined) {
+                    return undefined;
+                }
                 const specifier = getModuleNameStringLiteralAt(importingSourceFile, reason.index).text;
                 // If the preference is for non relative and the module specifier is relative, ignore it
                 return preferences.relativePreference !== RelativePreference.NonRelative || !pathIsRelative(specifier) ?
@@ -1047,7 +1054,7 @@ function tryGetModuleNameAsNodeModule({ path, isRedirect }: ModulePath, { getCan
 
     // Simplify the full file path to something that can be resolved by Node.
 
-    const preferences = getModuleSpecifierPreferences(userPreferences, options, importingSourceFile);
+    const preferences = getModuleSpecifierPreferences(userPreferences, host, options, importingSourceFile);
     const allowedEndings = preferences.getAllowedEndingsInPreferredOrder();
     let moduleSpecifier = path;
     let isPackageRootPath = false;
@@ -1107,7 +1114,7 @@ function tryGetModuleNameAsNodeModule({ path, isRedirect }: ModulePath, { getCan
         const cachedPackageJson = host.getPackageJsonInfoCache?.()?.getPackageJsonInfo(packageJsonPath);
         if (isPackageJsonInfo(cachedPackageJson) || cachedPackageJson === undefined && host.fileExists(packageJsonPath)) {
             const packageJsonContent: Record<string, any> | undefined = cachedPackageJson?.contents.packageJsonContent || tryParseJson(host.readFile!(packageJsonPath)!);
-            const importMode = overrideMode || importingSourceFile.impliedNodeFormat;
+            const importMode = overrideMode || getDefaultResolutionModeForFile(importingSourceFile, host, options);
             if (getResolvePackageJsonExports(options)) {
                 // The package name that we found in node_modules could be different from the package
                 // name in the package.json content via url/filepath dependency specifiers. We need to
@@ -1302,3 +1309,7 @@ function getRelativePathIfInSameVolume(path: string, directoryPath: string, getC
 function isPathRelativeToParent(path: string): boolean {
     return startsWith(path, "..");
 }
+
+function getDefaultResolutionModeForFile(file: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, host: Pick<ModuleSpecifierResolutionHost, "getDefaultResolutionModeForFile">, compilerOptions: CompilerOptions) {
+    return isFullSourceFile(file) ? host.getDefaultResolutionModeForFile(file) : getDefaultResolutionModeForFileWorker(file, compilerOptions);
+}
diff --git a/src/compiler/program.ts b/src/compiler/program.ts
index c46e910a53d2b..64166dff2cefa 100644
--- a/src/compiler/program.ts
+++ b/src/compiler/program.ts
@@ -168,6 +168,7 @@ import {
     ImportClause,
     ImportDeclaration,
     ImportOrExportSpecifier,
+    importSyntaxAffectsModuleResolution,
     InternalEmitFlags,
     inverseJsxOptionMap,
     isAmbientModule,
@@ -834,9 +835,11 @@ export function flattenDiagnosticMessageText(diag: string | DiagnosticMessageCha
  * @internal
  */
 export interface SourceFileImportsList {
-    /** @internal */ imports: SourceFile["imports"];
-    /** @internal */ moduleAugmentations: SourceFile["moduleAugmentations"];
+    imports: SourceFile["imports"];
+    moduleAugmentations: SourceFile["moduleAugmentations"];
     impliedNodeFormat?: ResolutionMode;
+    fileName: string;
+    packageJsonScope?: SourceFile["packageJsonScope"];
 }
 
 /**
@@ -882,22 +885,47 @@ export function isExclusivelyTypeOnlyImportOrExport(decl: ImportDeclaration | Ex
 
 /**
  * Use `program.getModeForUsageLocation`, which retrieves the correct `compilerOptions`, instead of this function whenever possible.
- * Calculates the final resolution mode for a given module reference node. This is the resolution mode explicitly provided via import
- * attributes, if present, or the syntax the usage would have if emitted to JavaScript. In `--module node16` or `nodenext`, this may
- * depend on the file's `impliedNodeFormat`. In `--module preserve`, it depends only on the input syntax of the reference. In other
- * `module` modes, when overriding import attributes are not provided, this function returns `undefined`, as the result would have no
- * impact on module resolution, emit, or type checking.
+ * Calculates the final resolution mode for a given module reference node. This function only returns a result when module resolution
+ * settings allow differing resolution between ESM imports and CJS requires, or when a mode is explicitly provided via import attributes,
+ * which cause an `import` or `require` condition to be used during resolution regardless of module resolution settings. In absence of
+ * overriding attributes, and in modes that support differing resolution, the result indicates the syntax the usage would emit to JavaScript.
+ * Some examples:
+ *
+ * ```ts
+ * // tsc foo.mts --module nodenext
+ * import {} from "mod";
+ * // Result: ESNext - the import emits as ESM due to `impliedNodeFormat` set by .mts file extension
+ *
+ * // tsc foo.cts --module nodenext
+ * import {} from "mod";
+ * // Result: CommonJS - the import emits as CJS due to `impliedNodeFormat` set by .cts file extension
+ *
+ * // tsc foo.ts --module preserve --moduleResolution bundler
+ * import {} from "mod";
+ * // Result: ESNext - the import emits as ESM due to `--module preserve` and `--moduleResolution bundler`
+ * // supports conditional imports/exports
+ *
+ * // tsc foo.ts --module preserve --moduleResolution node10
+ * import {} from "mod";
+ * // Result: undefined - the import emits as ESM due to `--module preserve`, but `--moduleResolution node10`
+ * // does not support conditional imports/exports
+ *
+ * // tsc foo.ts --module commonjs --moduleResolution node10
+ * import type {} from "mod" with { "resolution-mode": "import" };
+ * // Result: ESNext - conditional imports/exports always supported with "resolution-mode" attribute
+ * ```
+ *
  * @param file The file the import or import-like reference is contained within
  * @param usage The module reference string
  * @param compilerOptions The compiler options for the program that owns the file. If the file belongs to a referenced project, the compiler options
  * should be the options of the referenced project, not the referencing project.
  * @returns The final resolution mode of the import
  */
-export function getModeForUsageLocation(file: { impliedNodeFormat?: ResolutionMode; }, usage: StringLiteralLike, compilerOptions: CompilerOptions) {
+export function getModeForUsageLocation(file: SourceFile, usage: StringLiteralLike, compilerOptions: CompilerOptions) {
     return getModeForUsageLocationWorker(file, usage, compilerOptions);
 }
 
-function getModeForUsageLocationWorker(file: { impliedNodeFormat?: ResolutionMode; }, usage: StringLiteralLike, compilerOptions?: CompilerOptions) {
+function getModeForUsageLocationWorker(file: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, usage: StringLiteralLike, compilerOptions?: CompilerOptions) {
     if ((isImportDeclaration(usage.parent) || isExportDeclaration(usage.parent))) {
         const isTypeOnly = isExclusivelyTypeOnlyImportOrExport(usage.parent);
         if (isTypeOnly) {
@@ -913,20 +941,36 @@ function getModeForUsageLocationWorker(file: { impliedNodeFormat?: ResolutionMod
             return override;
         }
     }
-    if (compilerOptions && getEmitModuleKind(compilerOptions) === ModuleKind.Preserve) {
-        return (usage.parent.parent && isImportEqualsDeclaration(usage.parent.parent) || isRequireCall(usage.parent, /*requireStringLiteralLikeArgument*/ false))
-            ? ModuleKind.CommonJS
-            : ModuleKind.ESNext;
+
+    if (compilerOptions && importSyntaxAffectsModuleResolution(compilerOptions)) {
+        return getEmitSyntaxForUsageLocationWorker(file, usage, compilerOptions);
     }
-    if (file.impliedNodeFormat === undefined) return undefined;
-    if (file.impliedNodeFormat !== ModuleKind.ESNext) {
-        // in cjs files, import call expressions are esm format, otherwise everything is cjs
-        return isImportCall(walkUpParenthesizedExpressions(usage.parent)) ? ModuleKind.ESNext : ModuleKind.CommonJS;
+}
+
+function getEmitSyntaxForUsageLocationWorker(file: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, usage: StringLiteralLike, compilerOptions?: CompilerOptions): ResolutionMode {
+    if (!compilerOptions) {
+        // This should always be provided, but we try to fail somewhat
+        // gracefully to allow projects like ts-node time to update.
+        return undefined;
     }
-    // in esm files, import=require statements are cjs format, otherwise everything is esm
-    // imports are only parent'd up to their containing declaration/expression, so access farther parents with care
     const exprParentParent = walkUpParenthesizedExpressions(usage.parent)?.parent;
-    return exprParentParent && isImportEqualsDeclaration(exprParentParent) ? ModuleKind.CommonJS : ModuleKind.ESNext;
+    if (exprParentParent && isImportEqualsDeclaration(exprParentParent) || isRequireCall(usage.parent, /*requireStringLiteralLikeArgument*/ false)) {
+        return ModuleKind.CommonJS;
+    }
+    if (isImportCall(walkUpParenthesizedExpressions(usage.parent))) {
+        return shouldTransformImportCallWorker(file, compilerOptions) ? ModuleKind.CommonJS : ModuleKind.ESNext;
+    }
+    // If we're in --module preserve on an input file, we know that an import
+    // is an import. But if this is a declaration file, we'd prefer to use the
+    // impliedNodeFormat. Since we want things to be consistent between the two,
+    // we need to issue errors when the user writes ESM syntax in a definitely-CJS
+    // file, until/unless declaration emit can indicate a true ESM import. On the
+    // other hand, writing CJS syntax in a definitely-ESM file is fine, since declaration
+    // emit preserves the CJS syntax.
+    const fileEmitMode = getEmitModuleFormatOfFileWorker(file, compilerOptions);
+    return fileEmitMode === ModuleKind.CommonJS ? ModuleKind.CommonJS :
+        emitModuleKindIsNonNodeESM(fileEmitMode) || fileEmitMode === ModuleKind.Preserve ? ModuleKind.ESNext :
+        undefined;
 }
 
 /** @internal */
@@ -1017,7 +1061,7 @@ function getTypeReferenceResolutionName<T extends FileReference | string>(entry:
 
 const typeReferenceResolutionNameAndModeGetter: ResolutionNameAndModeGetter<FileReference | string, SourceFile | undefined> = {
     getName: getTypeReferenceResolutionName,
-    getMode: (entry, file) => getModeForFileReference(entry, file?.impliedNodeFormat),
+    getMode: (entry, file, compilerOptions) => getModeForFileReference(entry, file && getDefaultResolutionModeForFileWorker(file, compilerOptions)),
 };
 
 /** @internal */
@@ -1339,16 +1383,11 @@ export function getImpliedNodeFormatForFileWorker(
     host: ModuleResolutionHost,
     options: CompilerOptions,
 ) {
-    switch (getEmitModuleResolutionKind(options)) {
-        case ModuleResolutionKind.Node16:
-        case ModuleResolutionKind.NodeNext:
-            return fileExtensionIsOneOf(fileName, [Extension.Dmts, Extension.Mts, Extension.Mjs]) ? ModuleKind.ESNext :
-                fileExtensionIsOneOf(fileName, [Extension.Dcts, Extension.Cts, Extension.Cjs]) ? ModuleKind.CommonJS :
-                fileExtensionIsOneOf(fileName, [Extension.Dts, Extension.Ts, Extension.Tsx, Extension.Js, Extension.Jsx]) ? lookupFromPackageJson() :
-                undefined; // other extensions, like `json` or `tsbuildinfo`, are set as `undefined` here but they should never be fed through the transformer pipeline
-        default:
-            return undefined;
-    }
+    return fileExtensionIsOneOf(fileName, [Extension.Dmts, Extension.Mts, Extension.Mjs]) ? ModuleKind.ESNext :
+        fileExtensionIsOneOf(fileName, [Extension.Dcts, Extension.Cts, Extension.Cjs]) ? ModuleKind.CommonJS :
+        fileExtensionIsOneOf(fileName, [Extension.Dts, Extension.Ts, Extension.Tsx, Extension.Js, Extension.Jsx]) ? lookupFromPackageJson() :
+        undefined; // other extensions, like `json` or `tsbuildinfo`, are set as `undefined` here but they should never be fed through the transformer pipeline
+
     function lookupFromPackageJson(): Partial<CreateSourceFileOptions> {
         const state = getTemporaryModuleResolutionState(packageJsonInfoCache, host, options);
         const packageJsonLocations: string[] = [];
@@ -1899,6 +1938,7 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
         isSourceFileFromExternalLibrary,
         isSourceFileDefaultLibrary,
         getModeForUsageLocation,
+        getEmitSyntaxForUsageLocation,
         getModeForResolutionAtIndex,
         getSourceFileFromReference,
         getLibFileFromReference,
@@ -1926,6 +1966,11 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
         forEachResolvedProjectReference,
         isSourceOfProjectReferenceRedirect,
         getRedirectReferenceForResolutionFromSourceOfProject,
+        getCompilerOptionsForFile,
+        getDefaultResolutionModeForFile,
+        getEmitModuleFormatOfFile,
+        getImpliedNodeFormatForEmit,
+        shouldTransformImportCall,
         emitBuildInfo,
         fileExists,
         readFile,
@@ -2640,6 +2685,10 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
             getSymlinkCache,
             writeFile: writeFileCallback || writeFile,
             isEmitBlocked,
+            shouldTransformImportCall,
+            getEmitModuleFormatOfFile,
+            getDefaultResolutionModeForFile,
+            getModeForResolutionAtIndex,
             readFile: f => host.readFile(f),
             fileExists: f => {
                 // Use local caches
@@ -3871,11 +3920,15 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
             // store resolved type directive on the file
             const fileName = toFileNameLowerCase(ref.fileName);
             resolutionsInFile.set(fileName, getModeForFileReference(ref, file.impliedNodeFormat), resolvedTypeReferenceDirective);
-            const mode = ref.resolutionMode || file.impliedNodeFormat;
+            const mode = ref.resolutionMode || getDefaultResolutionModeForFile(file);
             processTypeReferenceDirective(fileName, mode, resolvedTypeReferenceDirective, { kind: FileIncludeKind.TypeReferenceDirective, file: file.path, index });
         }
     }
 
+    function getCompilerOptionsForFile(file: SourceFile): CompilerOptions {
+        return getRedirectReferenceForResolution(file)?.commandLine.options || options;
+    }
+
     function processTypeReferenceDirective(
         typeReferenceDirective: string,
         mode: ResolutionMode,
@@ -4033,7 +4086,7 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
             const resolutions = resolvedModulesProcessing?.get(file.path) ||
                 resolveModuleNamesReusingOldState(moduleNames, file);
             Debug.assert(resolutions.length === moduleNames.length);
-            const optionsForFile = getRedirectReferenceForResolution(file)?.commandLine.options || options;
+            const optionsForFile = getCompilerOptionsForFile(file);
             const resolutionsInFile = createModeAwareCache<ResolutionWithFailedLookupLocations>();
             (resolvedModules ??= new Map()).set(file.path, resolutionsInFile);
             for (let index = 0; index < moduleNames.length; index++) {
@@ -4604,7 +4657,8 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
         if (locationReason && fileIncludeReasons?.length === 1) fileIncludeReasons = undefined;
         const location = locationReason && getReferencedFileLocation(program, locationReason);
         const fileIncludeReasonDetails = fileIncludeReasons && chainDiagnosticMessages(fileIncludeReasons, Diagnostics.The_file_is_in_the_program_because_Colon);
-        const redirectInfo = file && explainIfFileIsRedirectAndImpliedFormat(file);
+        const optionsForFile = file && getCompilerOptionsForFile(file) || options;
+        const redirectInfo = file && explainIfFileIsRedirectAndImpliedFormat(file, optionsForFile);
         const chain = chainDiagnosticMessages(redirectInfo ? fileIncludeReasonDetails ? [fileIncludeReasonDetails, ...redirectInfo] : redirectInfo : fileIncludeReasonDetails, diagnostic, ...args || emptyArray);
         return location && isReferenceFileLocation(location) ?
             createFileDiagnosticFromMessageChain(location.file, location.pos, location.end - location.pos, chain, relatedInfo) :
@@ -4934,13 +4988,70 @@ export function createProgram(rootNamesOrOptions: readonly string[] | CreateProg
     }
 
     function getModeForUsageLocation(file: SourceFile, usage: StringLiteralLike): ResolutionMode {
-        const optionsForFile = getRedirectReferenceForResolution(file)?.commandLine.options || options;
-        return getModeForUsageLocationWorker(file, usage, optionsForFile);
+        return getModeForUsageLocationWorker(file, usage, getCompilerOptionsForFile(file));
+    }
+
+    function getEmitSyntaxForUsageLocation(file: SourceFile, usage: StringLiteralLike): ResolutionMode {
+        return getEmitSyntaxForUsageLocationWorker(file, usage, getCompilerOptionsForFile(file));
     }
 
     function getModeForResolutionAtIndex(file: SourceFile, index: number): ResolutionMode {
         return getModeForUsageLocation(file, getModuleNameStringLiteralAt(file, index));
     }
+
+    function getDefaultResolutionModeForFile(sourceFile: SourceFile): ResolutionMode {
+        return getDefaultResolutionModeForFileWorker(sourceFile, getCompilerOptionsForFile(sourceFile));
+    }
+
+    function getImpliedNodeFormatForEmit(sourceFile: SourceFile): ResolutionMode {
+        return getImpliedNodeFormatForEmitWorker(sourceFile, getCompilerOptionsForFile(sourceFile));
+    }
+
+    function getEmitModuleFormatOfFile(sourceFile: SourceFile): ModuleKind {
+        return getEmitModuleFormatOfFileWorker(sourceFile, getCompilerOptionsForFile(sourceFile));
+    }
+
+    function shouldTransformImportCall(sourceFile: SourceFile): boolean {
+        return shouldTransformImportCallWorker(sourceFile, getCompilerOptionsForFile(sourceFile));
+    }
+}
+
+function shouldTransformImportCallWorker(sourceFile: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, options: CompilerOptions): boolean {
+    const moduleKind = getEmitModuleKind(options);
+    if (ModuleKind.Node16 <= moduleKind && moduleKind <= ModuleKind.NodeNext || moduleKind === ModuleKind.Preserve) {
+        return false;
+    }
+    return getEmitModuleFormatOfFileWorker(sourceFile, options) < ModuleKind.ES2015;
+}
+/** @internal Prefer `program.getEmitModuleFormatOfFile` when possible. */
+export function getEmitModuleFormatOfFileWorker(sourceFile: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, options: CompilerOptions): ModuleKind {
+    return getImpliedNodeFormatForEmitWorker(sourceFile, options) ?? getEmitModuleKind(options);
+}
+/** @internal Prefer `program.getImpliedNodeFormatForEmit` when possible. */
+export function getImpliedNodeFormatForEmitWorker(sourceFile: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, options: CompilerOptions): ResolutionMode {
+    const moduleKind = getEmitModuleKind(options);
+    if (ModuleKind.Node16 <= moduleKind && moduleKind <= ModuleKind.NodeNext) {
+        return sourceFile.impliedNodeFormat;
+    }
+    if (
+        sourceFile.impliedNodeFormat === ModuleKind.CommonJS
+        && (sourceFile.packageJsonScope?.contents.packageJsonContent.type === "commonjs"
+            || fileExtensionIsOneOf(sourceFile.fileName, [Extension.Cjs, Extension.Cts]))
+    ) {
+        return ModuleKind.CommonJS;
+    }
+    if (
+        sourceFile.impliedNodeFormat === ModuleKind.ESNext
+        && (sourceFile.packageJsonScope?.contents.packageJsonContent.type === "module"
+            || fileExtensionIsOneOf(sourceFile.fileName, [Extension.Mjs, Extension.Mts]))
+    ) {
+        return ModuleKind.ESNext;
+    }
+    return undefined;
+}
+/** @internal Prefer `program.getDefaultResolutionModeForFile` when possible. */
+export function getDefaultResolutionModeForFileWorker(sourceFile: Pick<SourceFile, "fileName" | "impliedNodeFormat" | "packageJsonScope">, options: CompilerOptions): ResolutionMode {
+    return importSyntaxAffectsModuleResolution(options) ? getImpliedNodeFormatForEmitWorker(sourceFile, options) : undefined;
 }
 
 interface HostForUseSourceOfProjectReferenceRedirect {
diff --git a/src/compiler/transformer.ts b/src/compiler/transformer.ts
index f6428efe68b24..607cf01e63deb 100644
--- a/src/compiler/transformer.ts
+++ b/src/compiler/transformer.ts
@@ -65,10 +65,10 @@ import {
     transformESDecorators,
     transformESNext,
     transformGenerators,
+    transformImpliedNodeFormatDependentModule,
     transformJsx,
     transformLegacyDecorators,
     transformModule,
-    transformNodeModule,
     transformSystemModule,
     transformTypeScript,
     VariableDeclaration,
@@ -77,17 +77,23 @@ import * as performance from "./_namespaces/ts.performance";
 
 function getModuleTransformer(moduleKind: ModuleKind): TransformerFactory<SourceFile | Bundle> {
     switch (moduleKind) {
+        case ModuleKind.Preserve:
+            // `transformECMAScriptModule` contains logic for preserving
+            // CJS input syntax in `--module preserve`
+            return transformECMAScriptModule;
         case ModuleKind.ESNext:
         case ModuleKind.ES2022:
         case ModuleKind.ES2020:
         case ModuleKind.ES2015:
-        case ModuleKind.Preserve:
-            return transformECMAScriptModule;
-        case ModuleKind.System:
-            return transformSystemModule;
         case ModuleKind.Node16:
         case ModuleKind.NodeNext:
-            return transformNodeModule;
+        case ModuleKind.CommonJS:
+            // Wraps `transformModule` and `transformECMAScriptModule` and
+            // selects between them based on the `impliedNodeFormat` of the
+            // source file.
+            return transformImpliedNodeFormatDependentModule;
+        case ModuleKind.System:
+            return transformSystemModule;
         default:
             return transformModule;
     }
diff --git a/src/compiler/transformers/module/node.ts b/src/compiler/transformers/module/impliedNodeFormatDependent.ts
similarity index 84%
rename from src/compiler/transformers/module/node.ts
rename to src/compiler/transformers/module/impliedNodeFormatDependent.ts
index 920573dba76cd..c96ead5ebf753 100644
--- a/src/compiler/transformers/module/node.ts
+++ b/src/compiler/transformers/module/impliedNodeFormatDependent.ts
@@ -14,7 +14,7 @@ import {
 } from "../../_namespaces/ts";
 
 /** @internal */
-export function transformNodeModule(context: TransformationContext) {
+export function transformImpliedNodeFormatDependentModule(context: TransformationContext) {
     const previousOnSubstituteNode = context.onSubstituteNode;
     const previousOnEmitNode = context.onEmitNode;
 
@@ -30,6 +30,7 @@ export function transformNodeModule(context: TransformationContext) {
 
     const cjsOnSubstituteNode = context.onSubstituteNode;
     const cjsOnEmitNode = context.onEmitNode;
+    const getEmitModuleFormatOfFile = (file: SourceFile) => context.getEmitHost().getEmitModuleFormatOfFile(file);
 
     context.onSubstituteNode = onSubstituteNode;
     context.onEmitNode = onEmitNode;
@@ -51,7 +52,7 @@ export function transformNodeModule(context: TransformationContext) {
             if (!currentSourceFile) {
                 return previousOnSubstituteNode(hint, node);
             }
-            if (currentSourceFile.impliedNodeFormat === ModuleKind.ESNext) {
+            if (getEmitModuleFormatOfFile(currentSourceFile) >= ModuleKind.ES2015) {
                 return esmOnSubstituteNode(hint, node);
             }
             return cjsOnSubstituteNode(hint, node);
@@ -65,14 +66,14 @@ export function transformNodeModule(context: TransformationContext) {
         if (!currentSourceFile) {
             return previousOnEmitNode(hint, node, emitCallback);
         }
-        if (currentSourceFile.impliedNodeFormat === ModuleKind.ESNext) {
+        if (getEmitModuleFormatOfFile(currentSourceFile) >= ModuleKind.ES2015) {
             return esmOnEmitNode(hint, node, emitCallback);
         }
         return cjsOnEmitNode(hint, node, emitCallback);
     }
 
     function getModuleTransformForFile(file: SourceFile): typeof esmTransform {
-        return file.impliedNodeFormat === ModuleKind.ESNext ? esmTransform : cjsTransform;
+        return getEmitModuleFormatOfFile(file) >= ModuleKind.ES2015 ? esmTransform : cjsTransform;
     }
 
     function transformSourceFile(node: SourceFile) {
diff --git a/src/compiler/transformers/module/module.ts b/src/compiler/transformers/module/module.ts
index 68c4c809523b6..959c59f3e2952 100644
--- a/src/compiler/transformers/module/module.ts
+++ b/src/compiler/transformers/module/module.ts
@@ -789,7 +789,7 @@ export function transformModule(context: TransformationContext): (x: SourceFile
             case SyntaxKind.PartiallyEmittedExpression:
                 return visitPartiallyEmittedExpression(node as PartiallyEmittedExpression, valueIsDiscarded);
             case SyntaxKind.CallExpression:
-                if (isImportCall(node) && currentSourceFile.impliedNodeFormat === undefined) {
+                if (isImportCall(node) && host.shouldTransformImportCall(currentSourceFile)) {
                     return visitImportCallExpression(node);
                 }
                 break;
diff --git a/src/compiler/types.ts b/src/compiler/types.ts
index 44482247f7cf2..9677ec5009a0c 100644
--- a/src/compiler/types.ts
+++ b/src/compiler/types.ts
@@ -4720,21 +4720,79 @@ export interface Program extends ScriptReferenceHost {
     isSourceFileFromExternalLibrary(file: SourceFile): boolean;
     isSourceFileDefaultLibrary(file: SourceFile): boolean;
     /**
-     * Calculates the final resolution mode for a given module reference node. This is the resolution mode explicitly provided via import
-     * attributes, if present, or the syntax the usage would have if emitted to JavaScript. In `--module node16` or `nodenext`, this may
-     * depend on the file's `impliedNodeFormat`. In `--module preserve`, it depends only on the input syntax of the reference. In other
-     * `module` modes, when overriding import attributes are not provided, this function returns `undefined`, as the result would have no
-     * impact on module resolution, emit, or type checking.
+     * Calculates the final resolution mode for a given module reference node. This function only returns a result when module resolution
+     * settings allow differing resolution between ESM imports and CJS requires, or when a mode is explicitly provided via import attributes,
+     * which cause an `import` or `require` condition to be used during resolution regardless of module resolution settings. In absence of
+     * overriding attributes, and in modes that support differing resolution, the result indicates the syntax the usage would emit to JavaScript.
+     * Some examples:
+     *
+     * ```ts
+     * // tsc foo.mts --module nodenext
+     * import {} from "mod";
+     * // Result: ESNext - the import emits as ESM due to `impliedNodeFormat` set by .mts file extension
+     *
+     * // tsc foo.cts --module nodenext
+     * import {} from "mod";
+     * // Result: CommonJS - the import emits as CJS due to `impliedNodeFormat` set by .cts file extension
+     *
+     * // tsc foo.ts --module preserve --moduleResolution bundler
+     * import {} from "mod";
+     * // Result: ESNext - the import emits as ESM due to `--module preserve` and `--moduleResolution bundler`
+     * // supports conditional imports/exports
+     *
+     * // tsc foo.ts --module preserve --moduleResolution node10
+     * import {} from "mod";
+     * // Result: undefined - the import emits as ESM due to `--module preserve`, but `--moduleResolution node10`
+     * // does not support conditional imports/exports
+     *
+     * // tsc foo.ts --module commonjs --moduleResolution node10
+     * import type {} from "mod" with { "resolution-mode": "import" };
+     * // Result: ESNext - conditional imports/exports always supported with "resolution-mode" attribute
+     * ```
      */
     getModeForUsageLocation(file: SourceFile, usage: StringLiteralLike): ResolutionMode;
     /**
-     * Calculates the final resolution mode for an import at some index within a file's `imports` list. This is the resolution mode
-     * explicitly provided via import attributes, if present, or the syntax the usage would have if emitted to JavaScript. In
-     * `--module node16` or `nodenext`, this may depend on the file's `impliedNodeFormat`. In `--module preserve`, it depends only on the
-     * input syntax of the reference. In other `module` modes, when overriding import attributes are not provided, this function returns
-     * `undefined`, as the result would have no impact on module resolution, emit, or type checking.
+     * Calculates the final resolution mode for an import at some index within a file's `imports` list. This function only returns a result
+     * when module resolution settings allow differing resolution between ESM imports and CJS requires, or when a mode is explicitly provided
+     * via import attributes, which cause an `import` or `require` condition to be used during resolution regardless of module resolution
+     * settings. In absence of overriding attributes, and in modes that support differing resolution, the result indicates the syntax the
+     * usage would emit to JavaScript. Some examples:
+     *
+     * ```ts
+     * // tsc foo.mts --module nodenext
+     * import {} from "mod";
+     * // Result: ESNext - the import emits as ESM due to `impliedNodeFormat` set by .mts file extension
+     *
+     * // tsc foo.cts --module nodenext
+     * import {} from "mod";
+     * // Result: CommonJS - the import emits as CJS due to `impliedNodeFormat` set by .cts file extension
+     *
+     * // tsc foo.ts --module preserve --moduleResolution bundler
+     * import {} from "mod";
+     * // Result: ESNext - the import emits as ESM due to `--module preserve` and `--moduleResolution bundler`
+     * // supports conditional imports/exports
+     *
+     * // tsc foo.ts --module preserve --moduleResolution node10
+     * import {} from "mod";
+     * // Result: undefined - the import emits as ESM due to `--module preserve`, but `--moduleResolution node10`
+     * // does not support conditional imports/exports
+     *
+     * // tsc foo.ts --module commonjs --moduleResolution node10
+     * import type {} from "mod" with { "resolution-mode": "import" };
+     * // Result: ESNext - conditional imports/exports always supported with "resolution-mode" attribute
+     * ```
      */
     getModeForResolutionAtIndex(file: SourceFile, index: number): ResolutionMode;
+    /**
+     * @internal
+     * The resolution mode to use for module resolution or module specifier resolution
+     * outside the context of an existing module reference, where
+     * `program.getModeForUsageLocation` should be used instead.
+     */
+    getDefaultResolutionModeForFile(sourceFile: SourceFile): ResolutionMode;
+    /** @internal */ getImpliedNodeFormatForEmit(sourceFile: SourceFile): ResolutionMode;
+    /** @internal */ getEmitModuleFormatOfFile(sourceFile: SourceFile): ModuleKind;
+    /** @internal */ shouldTransformImportCall(sourceFile: SourceFile): boolean;
 
     // For testing purposes only.
     // This is set on created program to let us know how the program was created using old program
@@ -4789,6 +4847,7 @@ export interface Program extends ScriptReferenceHost {
     /** @internal */ getResolvedProjectReferenceByPath(projectReferencePath: Path): ResolvedProjectReference | undefined;
     /** @internal */ getRedirectReferenceForResolutionFromSourceOfProject(filePath: Path): ResolvedProjectReference | undefined;
     /** @internal */ isSourceOfProjectReferenceRedirect(fileName: string): boolean;
+    /** @internal */ getCompilerOptionsForFile(file: SourceFile): CompilerOptions;
     /** @internal */ getBuildInfo?(): BuildInfo;
     /** @internal */ emitBuildInfo(writeFile?: WriteFileCallback, cancellationToken?: CancellationToken): EmitResult;
     /**
@@ -4904,8 +4963,12 @@ export interface TypeCheckerHost extends ModuleSpecifierResolutionHost {
     getSourceFile(fileName: string): SourceFile | undefined;
     getProjectReferenceRedirect(fileName: string): string | undefined;
     isSourceOfProjectReferenceRedirect(fileName: string): boolean;
+    getEmitSyntaxForUsageLocation(file: SourceFile, usage: StringLiteralLike): ResolutionMode;
     getRedirectReferenceForResolutionFromSourceOfProject(filePath: Path): ResolvedProjectReference | undefined;
     getModeForUsageLocation(file: SourceFile, usage: StringLiteralLike): ResolutionMode;
+    getDefaultResolutionModeForFile(sourceFile: SourceFile): ResolutionMode;
+    getImpliedNodeFormatForEmit(sourceFile: SourceFile): ResolutionMode;
+    getEmitModuleFormatOfFile(sourceFile: SourceFile): ModuleKind;
 
     getResolvedModule(f: SourceFile, moduleName: string, mode: ResolutionMode): ResolvedModuleWithFailedLookupLocations | undefined;
 
@@ -5560,6 +5623,9 @@ export interface RequireVariableDeclarationList extends VariableDeclarationList
     readonly declarations: NodeArray<VariableDeclarationInitializedTo<RequireOrImportCall>>;
 }
 
+/** @internal */
+export type CanHaveModuleSpecifier = AnyImportOrBareOrAccessedRequire | AliasDeclarationNode | ExportDeclaration | ImportTypeNode;
+
 /** @internal */
 export type LateVisibilityPaintedStatement =
     | AnyImportOrJsDocImport
@@ -8256,6 +8322,8 @@ export interface EmitHost extends ScriptReferenceHost, ModuleSpecifierResolution
     getCanonicalFileName(fileName: string): string;
 
     isEmitBlocked(emitFileName: string): boolean;
+    shouldTransformImportCall(sourceFile: SourceFile): boolean;
+    getEmitModuleFormatOfFile(sourceFile: SourceFile): ModuleKind;
 
     writeFile: WriteFileCallback;
     getBuildInfo(): BuildInfo | undefined;
@@ -9497,6 +9565,7 @@ export interface PrinterOptions {
     omitTrailingSemicolon?: boolean;
     noEmitHelpers?: boolean;
     /** @internal */ module?: CompilerOptions["module"];
+    /** @internal */ moduleResolution?: CompilerOptions["moduleResolution"];
     /** @internal */ target?: CompilerOptions["target"];
     /** @internal */ sourceMap?: boolean;
     /** @internal */ inlineSourceMap?: boolean;
@@ -9631,6 +9700,8 @@ export interface ModuleSpecifierResolutionHost {
     isSourceOfProjectReferenceRedirect(fileName: string): boolean;
     getFileIncludeReasons(): MultiMap<Path, FileIncludeReason>;
     getCommonSourceDirectory(): string;
+    getDefaultResolutionModeForFile(sourceFile: SourceFile): ResolutionMode;
+    getModeForResolutionAtIndex(file: SourceFile, index: number): ResolutionMode;
 }
 
 /** @internal */
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index c1f48d54eac2f..bf3ea41be2b07 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -5,7 +5,6 @@ import {
     addRange,
     affectsDeclarationPathOptionDeclarations,
     affectsEmitOptionDeclarations,
-    AliasDeclarationNode,
     AllAccessorDeclarations,
     AmbientModuleDeclaration,
     AmpersandAmpersandEqualsToken,
@@ -41,6 +40,7 @@ import {
     canHaveDecorators,
     canHaveLocals,
     canHaveModifiers,
+    type CanHaveModuleSpecifier,
     CaseBlock,
     CaseClause,
     CaseOrDefaultClause,
@@ -167,6 +167,7 @@ import {
     getCommonSourceDirectory,
     getContainerFlags,
     getDirectoryPath,
+    getImpliedNodeFormatForEmitWorker,
     getJSDocAugmentsTag,
     getJSDocDeprecatedTagNoCache,
     getJSDocImplementsTags,
@@ -4017,7 +4018,26 @@ export function isFunctionSymbol(symbol: Symbol | undefined) {
 }
 
 /** @internal */
-export function tryGetModuleSpecifierFromDeclaration(node: AnyImportOrBareOrAccessedRequire | AliasDeclarationNode | ExportDeclaration | ImportTypeNode | JSDocImportTag): StringLiteralLike | undefined {
+export function canHaveModuleSpecifier(node: Node | undefined): node is CanHaveModuleSpecifier {
+    switch (node?.kind) {
+        case SyntaxKind.VariableDeclaration:
+        case SyntaxKind.BindingElement:
+        case SyntaxKind.ImportDeclaration:
+        case SyntaxKind.ExportDeclaration:
+        case SyntaxKind.ImportEqualsDeclaration:
+        case SyntaxKind.ImportClause:
+        case SyntaxKind.NamespaceExport:
+        case SyntaxKind.NamespaceImport:
+        case SyntaxKind.ExportSpecifier:
+        case SyntaxKind.ImportSpecifier:
+        case SyntaxKind.ImportType:
+            return true;
+    }
+    return false;
+}
+
+/** @internal */
+export function tryGetModuleSpecifierFromDeclaration(node: CanHaveModuleSpecifier | JSDocImportTag): StringLiteralLike | undefined {
     switch (node.kind) {
         case SyntaxKind.VariableDeclaration:
         case SyntaxKind.BindingElement:
@@ -8589,11 +8609,13 @@ function isFileModuleFromUsingJSXTag(file: SourceFile): Node | undefined {
  * Note that this requires file.impliedNodeFormat be set already; meaning it must be set very early on
  * in SourceFile construction.
  */
-function isFileForcedToBeModuleByFormat(file: SourceFile): true | undefined {
+function isFileForcedToBeModuleByFormat(file: SourceFile, options: CompilerOptions): true | undefined {
     // Excludes declaration files - they still require an explicit `export {}` or the like
     // for back compat purposes. The only non-declaration files _not_ forced to be a module are `.js` files
     // that aren't esm-mode (meaning not in a `type: module` scope).
-    return (file.impliedNodeFormat === ModuleKind.ESNext || (fileExtensionIsOneOf(file.fileName, [Extension.Cjs, Extension.Cts, Extension.Mjs, Extension.Mts]))) && !file.isDeclarationFile ? true : undefined;
+    //
+    // TODO: extension check never considered compilerOptions; should impliedNodeFormat?
+    return (getImpliedNodeFormatForEmitWorker(file, options) === ModuleKind.ESNext || (fileExtensionIsOneOf(file.fileName, [Extension.Cjs, Extension.Cts, Extension.Mjs, Extension.Mts]))) && !file.isDeclarationFile ? true : undefined;
 }
 
 /** @internal */
@@ -8614,17 +8636,29 @@ export function getSetExternalModuleIndicator(options: CompilerOptions): (file:
             // If module is nodenext or node16, all esm format files are modules
             // If jsx is react-jsx or react-jsxdev then jsx tags force module-ness
             // otherwise, the presence of import or export statments (or import.meta) implies module-ness
-            const checks: ((file: SourceFile) => Node | true | undefined)[] = [isFileProbablyExternalModule];
+            const checks: ((file: SourceFile, options: CompilerOptions) => Node | true | undefined)[] = [isFileProbablyExternalModule];
             if (options.jsx === JsxEmit.ReactJSX || options.jsx === JsxEmit.ReactJSXDev) {
                 checks.push(isFileModuleFromUsingJSXTag);
             }
             checks.push(isFileForcedToBeModuleByFormat);
             const combined = or(...checks);
-            const callback = (file: SourceFile) => void (file.externalModuleIndicator = combined(file));
+            const callback = (file: SourceFile) => void (file.externalModuleIndicator = combined(file, options));
             return callback;
     }
 }
 
+/**
+ * @internal
+ * Returns true if an `import` and a `require` of the same module specifier
+ * can resolve to a different file.
+ */
+export function importSyntaxAffectsModuleResolution(options: CompilerOptions) {
+    const moduleResolution = getEmitModuleResolutionKind(options);
+    return ModuleResolutionKind.Node16 <= moduleResolution && moduleResolution <= ModuleResolutionKind.NodeNext
+        || getResolvePackageJsonExports(options)
+        || getResolvePackageJsonImports(options);
+}
+
 type CompilerOptionKeys = keyof { [K in keyof CompilerOptions as string extends K ? never : K]: any; };
 function createComputedCompilerOptions<T extends Record<string, CompilerOptionKeys[]>>(
     options: {
diff --git a/src/compiler/watch.ts b/src/compiler/watch.ts
index 2e89d636e0c71..459fdc8617952 100644
--- a/src/compiler/watch.ts
+++ b/src/compiler/watch.ts
@@ -56,6 +56,7 @@ import {
     getDefaultLibFileName,
     getDirectoryPath,
     getEmitScriptTarget,
+    getImpliedNodeFormatForEmitWorker,
     getLineAndCharacterOfPosition,
     getNewLineCharacter,
     getNormalizedAbsolutePath,
@@ -352,13 +353,14 @@ export function explainFiles(program: Program, write: (s: string) => void) {
     for (const file of program.getSourceFiles()) {
         write(`${toFileName(file, relativeFileName)}`);
         reasons.get(file.path)?.forEach(reason => write(`  ${fileIncludeReasonToDiagnostics(program, reason, relativeFileName).messageText}`));
-        explainIfFileIsRedirectAndImpliedFormat(file, relativeFileName)?.forEach(d => write(`  ${d.messageText}`));
+        explainIfFileIsRedirectAndImpliedFormat(file, program.getCompilerOptionsForFile(file), relativeFileName)?.forEach(d => write(`  ${d.messageText}`));
     }
 }
 
 /** @internal */
 export function explainIfFileIsRedirectAndImpliedFormat(
     file: SourceFile,
+    options: CompilerOptions,
     fileNameConvertor?: (fileName: string) => string,
 ): DiagnosticMessageChain[] | undefined {
     let result: DiagnosticMessageChain[] | undefined;
@@ -377,7 +379,7 @@ export function explainIfFileIsRedirectAndImpliedFormat(
         ));
     }
     if (isExternalOrCommonJsModule(file)) {
-        switch (file.impliedNodeFormat) {
+        switch (getImpliedNodeFormatForEmitWorker(file, options)) {
             case ModuleKind.ESNext:
                 if (file.packageJsonScope) {
                     (result ??= []).push(chainDiagnosticMessages(
diff --git a/src/services/codefixes/importFixes.ts b/src/services/codefixes/importFixes.ts
index 9dc8ebefe7db9..6a1232abfcbd8 100644
--- a/src/services/codefixes/importFixes.ts
+++ b/src/services/codefixes/importFixes.ts
@@ -43,10 +43,12 @@ import {
     getDefaultExportInfoWorker,
     getDefaultLikeExportInfo,
     getDirectoryPath,
+    getEmitModuleFormatOfFileWorker,
     getEmitModuleKind,
     getEmitModuleResolutionKind,
     getEmitScriptTarget,
     getExportInfoMap,
+    getImpliedNodeFormatForEmitWorker,
     getMeaningFromDeclaration,
     getMeaningFromLocation,
     getNameForExportedSymbol,
@@ -332,7 +334,7 @@ function createImportAdderWorker(sourceFile: SourceFile | FutureSourceFile, prog
                 compilerOptions,
                 createModuleSpecifierResolutionHost(program, host),
             );
-            const importKind = getImportKind(futureExportingSourceFile, exportKind, compilerOptions);
+            const importKind = getImportKind(futureExportingSourceFile, exportKind, program);
             const addAsTypeOnly = getAddAsTypeOnly(
                 isImportUsageValidAsTypeOnly,
                 /*isForNewImportDeclaration*/ true,
@@ -686,7 +688,7 @@ export interface ImportSpecifierResolver {
 /** @internal */
 export function createImportSpecifierResolver(importingFile: SourceFile, program: Program, host: LanguageServiceHost, preferences: UserPreferences): ImportSpecifierResolver {
     const packageJsonImportFilter = createPackageJsonImportFilter(importingFile, preferences, host);
-    const importMap = createExistingImportMap(program.getTypeChecker(), importingFile, program.getCompilerOptions());
+    const importMap = createExistingImportMap(importingFile, program);
     return { getModuleSpecifierForBestExportInfo };
 
     function getModuleSpecifierForBestExportInfo(
@@ -895,7 +897,7 @@ function getImportFixes(
     sourceFile: SourceFile | FutureSourceFile,
     host: LanguageServiceHost,
     preferences: UserPreferences,
-    importMap = isFullSourceFile(sourceFile) ? createExistingImportMap(program.getTypeChecker(), sourceFile, program.getCompilerOptions()) : undefined,
+    importMap = isFullSourceFile(sourceFile) ? createExistingImportMap(sourceFile, program) : undefined,
     fromCacheOnly?: boolean,
 ): { computedWithoutCacheCount: number; fixes: readonly ImportFixWithModuleSpecifier[]; } {
     const checker = program.getTypeChecker();
@@ -1061,7 +1063,8 @@ function tryAddToExistingImport(existingImports: readonly FixAddToExistingImport
     }
 }
 
-function createExistingImportMap(checker: TypeChecker, importingFile: SourceFile, compilerOptions: CompilerOptions) {
+function createExistingImportMap(importingFile: SourceFile, program: Program) {
+    const checker = program.getTypeChecker();
     let importMap: MultiMap<SymbolId, AnyImportOrRequire> | undefined;
     for (const moduleSpecifier of importingFile.imports) {
         const i = importFromModuleSpecifier(moduleSpecifier);
@@ -1091,7 +1094,7 @@ function createExistingImportMap(checker: TypeChecker, importingFile: SourceFile
                 && !every(matchingDeclarations, isJSDocImportTag)
             ) return emptyArray;
 
-            const importKind = getImportKind(importingFile, exportKind, compilerOptions);
+            const importKind = getImportKind(importingFile, exportKind, program);
             return matchingDeclarations.map(declaration => ({ declaration, importKind, symbol, targetFlags }));
         },
     };
@@ -1115,8 +1118,9 @@ function shouldUseRequire(sourceFile: SourceFile | FutureSourceFile, program: Pr
 
     // 4. In --module nodenext, assume we're not emitting JS -> JS, so use
     //    whatever syntax Node expects based on the detected module kind
-    if (sourceFile.impliedNodeFormat === ModuleKind.CommonJS) return true;
-    if (sourceFile.impliedNodeFormat === ModuleKind.ESNext) return false;
+    //    TODO: consider removing `impliedNodeFormatForEmit`
+    if (getImpliedNodeFormatForEmit(sourceFile, program) === ModuleKind.CommonJS) return true;
+    if (getImpliedNodeFormatForEmit(sourceFile, program) === ModuleKind.ESNext) return false;
 
     // 5. Match the first other JS file in the program that's unambiguously CJS or ESM
     for (const otherFile of program.getSourceFiles()) {
@@ -1169,7 +1173,7 @@ function getNewImportFixes(
                 // `position` should only be undefined at a missing jsx namespace, in which case we shouldn't be looking for pure types.
                 return { kind: ImportFixKind.JsdocTypeImport, moduleSpecifier, usagePosition, exportInfo, isReExport: i > 0 };
             }
-            const importKind = getImportKind(sourceFile, exportInfo.exportKind, compilerOptions);
+            const importKind = getImportKind(sourceFile, exportInfo.exportKind, program);
             let qualification: Qualification | undefined;
             if (usagePosition !== undefined && importKind === ImportKind.CommonJS && exportInfo.exportKind === ExportKind.Named) {
                 // Compiler options are restricting our import options to a require, but we need to access
@@ -1386,8 +1390,8 @@ function getUmdSymbol(token: Node, checker: TypeChecker): Symbol | undefined {
  *
  * @internal
  */
-export function getImportKind(importingFile: SourceFile | FutureSourceFile, exportKind: ExportKind, compilerOptions: CompilerOptions, forceImportKeyword?: boolean): ImportKind {
-    if (compilerOptions.verbatimModuleSyntax && (getEmitModuleKind(compilerOptions) === ModuleKind.CommonJS || importingFile.impliedNodeFormat === ModuleKind.CommonJS)) {
+export function getImportKind(importingFile: SourceFile | FutureSourceFile, exportKind: ExportKind, program: Program, forceImportKeyword?: boolean): ImportKind {
+    if (program.getCompilerOptions().verbatimModuleSyntax && getEmitModuleFormatOfFile(importingFile, program) === ModuleKind.CommonJS) {
         // TODO: if the exporting file is ESM under nodenext, or `forceImport` is given in a JS file, this is impossible
         return ImportKind.CommonJS;
     }
@@ -1397,22 +1401,22 @@ export function getImportKind(importingFile: SourceFile | FutureSourceFile, expo
         case ExportKind.Default:
             return ImportKind.Default;
         case ExportKind.ExportEquals:
-            return getExportEqualsImportKind(importingFile, compilerOptions, !!forceImportKeyword);
+            return getExportEqualsImportKind(importingFile, program.getCompilerOptions(), !!forceImportKeyword);
         case ExportKind.UMD:
-            return getUmdImportKind(importingFile, compilerOptions, !!forceImportKeyword);
+            return getUmdImportKind(importingFile, program, !!forceImportKeyword);
         default:
             return Debug.assertNever(exportKind);
     }
 }
 
-function getUmdImportKind(importingFile: SourceFile | FutureSourceFile, compilerOptions: CompilerOptions, forceImportKeyword: boolean): ImportKind {
+function getUmdImportKind(importingFile: SourceFile | FutureSourceFile, program: Program, forceImportKeyword: boolean): ImportKind {
     // Import a synthetic `default` if enabled.
-    if (getAllowSyntheticDefaultImports(compilerOptions)) {
+    if (getAllowSyntheticDefaultImports(program.getCompilerOptions())) {
         return ImportKind.Default;
     }
 
     // When a synthetic `default` is unavailable, use `import..require` if the module kind supports it.
-    const moduleKind = getEmitModuleKind(compilerOptions);
+    const moduleKind = getEmitModuleKind(program.getCompilerOptions());
     switch (moduleKind) {
         case ModuleKind.AMD:
         case ModuleKind.CommonJS:
@@ -1432,7 +1436,7 @@ function getUmdImportKind(importingFile: SourceFile | FutureSourceFile, compiler
             return ImportKind.Namespace;
         case ModuleKind.Node16:
         case ModuleKind.NodeNext:
-            return importingFile.impliedNodeFormat === ModuleKind.ESNext ? ImportKind.Namespace : ImportKind.CommonJS;
+            return getImpliedNodeFormatForEmit(importingFile, program) === ModuleKind.ESNext ? ImportKind.Namespace : ImportKind.CommonJS;
         default:
             return Debug.assertNever(moduleKind, `Unexpected moduleKind ${moduleKind}`);
     }
@@ -2035,3 +2039,11 @@ export function moduleSpecifierToValidIdentifier(moduleSpecifier: string, target
     // Need `|| "_"` to ensure result isn't empty.
     return !isStringANonContextualKeyword(res) ? res || "_" : `_${res}`;
 }
+
+function getImpliedNodeFormatForEmit(file: SourceFile | FutureSourceFile, program: Program) {
+    return isFullSourceFile(file) ? program.getImpliedNodeFormatForEmit(file) : getImpliedNodeFormatForEmitWorker(file, program.getCompilerOptions());
+}
+
+function getEmitModuleFormatOfFile(file: SourceFile | FutureSourceFile, program: Program) {
+    return isFullSourceFile(file) ? program.getEmitModuleFormatOfFile(file) : getEmitModuleFormatOfFileWorker(file, program.getCompilerOptions());
+}
diff --git a/src/services/completions.ts b/src/services/completions.ts
index 4d4d3c313ae33..e5e5c87bc3dd7 100644
--- a/src/services/completions.ts
+++ b/src/services/completions.ts
@@ -1158,11 +1158,13 @@ function getJSDocParamAnnotation(
                             ? createSnippetPrinter({
                                 removeComments: true,
                                 module: options.module,
+                                moduleResolution: options.moduleResolution,
                                 target: options.target,
                             })
                             : createPrinter({
                                 removeComments: true,
                                 module: options.module,
+                                moduleResolution: options.moduleResolution,
                                 target: options.target,
                             });
                         setEmitFlags(typeNode, EmitFlags.SingleLine);
@@ -1456,6 +1458,7 @@ function getExhaustiveCaseSnippets(
         const printer = createSnippetPrinter({
             removeComments: true,
             module: options.module,
+            moduleResolution: options.moduleResolution,
             target: options.target,
             newLine: getNewLineKind(newLineChar),
         });
@@ -1717,7 +1720,7 @@ function createCompletionEntry(
     if (originIsResolvedExport(origin)) {
         sourceDisplay = [textPart(origin.moduleSpecifier)];
         if (importStatementCompletion) {
-            ({ insertText, replacementSpan } = getInsertTextAndReplacementSpanForImportCompletion(name, importStatementCompletion, origin, useSemicolons, sourceFile, options, preferences));
+            ({ insertText, replacementSpan } = getInsertTextAndReplacementSpanForImportCompletion(name, importStatementCompletion, origin, useSemicolons, sourceFile, program, preferences));
             isSnippet = preferences.includeCompletionsWithSnippetText ? true : undefined;
         }
     }
@@ -1943,6 +1946,7 @@ function getEntryForMemberCompletion(
     const printer = createSnippetPrinter({
         removeComments: true,
         module: options.module,
+        moduleResolution: options.moduleResolution,
         target: options.target,
         omitTrailingSemicolon: false,
         newLine: getNewLineKind(getNewLineOrDefaultFromHost(host, formatContext?.options)),
@@ -2169,6 +2173,7 @@ function getEntryForObjectLiteralMethodCompletion(
     const printer = createSnippetPrinter({
         removeComments: true,
         module: options.module,
+        moduleResolution: options.moduleResolution,
         target: options.target,
         omitTrailingSemicolon: false,
         newLine: getNewLineKind(getNewLineOrDefaultFromHost(host, formatContext?.options)),
@@ -2183,6 +2188,7 @@ function getEntryForObjectLiteralMethodCompletion(
     const signaturePrinter = createPrinter({
         removeComments: true,
         module: options.module,
+        moduleResolution: options.moduleResolution,
         target: options.target,
         omitTrailingSemicolon: true,
     });
@@ -2485,14 +2491,14 @@ function completionEntryDataToSymbolOriginInfo(data: CompletionEntryData, comple
     return unresolvedOrigin;
 }
 
-function getInsertTextAndReplacementSpanForImportCompletion(name: string, importStatementCompletion: ImportStatementCompletionInfo, origin: SymbolOriginInfoResolvedExport, useSemicolons: boolean, sourceFile: SourceFile, options: CompilerOptions, preferences: UserPreferences) {
+function getInsertTextAndReplacementSpanForImportCompletion(name: string, importStatementCompletion: ImportStatementCompletionInfo, origin: SymbolOriginInfoResolvedExport, useSemicolons: boolean, sourceFile: SourceFile, program: Program, preferences: UserPreferences) {
     const replacementSpan = importStatementCompletion.replacementSpan;
     const quotedModuleSpecifier = escapeSnippetText(quote(sourceFile, preferences, origin.moduleSpecifier));
     const exportKind = origin.isDefaultExport ? ExportKind.Default :
         origin.exportName === InternalSymbolName.ExportEquals ? ExportKind.ExportEquals :
         ExportKind.Named;
     const tabStop = preferences.includeCompletionsWithSnippetText ? "$1" : "";
-    const importKind = codefix.getImportKind(sourceFile, exportKind, options, /*forceImportKeyword*/ true);
+    const importKind = codefix.getImportKind(sourceFile, exportKind, program, /*forceImportKeyword*/ true);
     const isImportSpecifierTypeOnly = importStatementCompletion.couldBeTypeOnlyImportSpecifier;
     const topLevelTypeOnlyText = importStatementCompletion.isTopLevelTypeOnly ? ` ${tokenToString(SyntaxKind.TypeKeyword)} ` : " ";
     const importSpecifierTypeOnlyText = isImportSpecifierTypeOnly ? `${tokenToString(SyntaxKind.TypeKeyword)} ` : "";
diff --git a/src/services/goToDefinition.ts b/src/services/goToDefinition.ts
index bec35fd70867f..6bd367e419dd9 100644
--- a/src/services/goToDefinition.ts
+++ b/src/services/goToDefinition.ts
@@ -342,7 +342,7 @@ export function getReferenceAtPosition(sourceFile: SourceFile, position: number,
 
     const typeReferenceDirective = findReferenceInPosition(sourceFile.typeReferenceDirectives, position);
     if (typeReferenceDirective) {
-        const reference = program.getResolvedTypeReferenceDirectives().get(typeReferenceDirective.fileName, typeReferenceDirective.resolutionMode || sourceFile.impliedNodeFormat)?.resolvedTypeReferenceDirective;
+        const reference = program.getResolvedTypeReferenceDirectives().get(typeReferenceDirective.fileName, typeReferenceDirective.resolutionMode || program.getDefaultResolutionModeForFile(sourceFile))?.resolvedTypeReferenceDirective;
         const file = reference && program.getSourceFile(reference.resolvedFileName!); // TODO:GH#18217
         return file && { reference: typeReferenceDirective, fileName: file.fileName, file, unverified: false };
     }
diff --git a/src/services/importTracker.ts b/src/services/importTracker.ts
index 6f54bf158e48d..516df4dbdb5b4 100644
--- a/src/services/importTracker.ts
+++ b/src/services/importTracker.ts
@@ -480,7 +480,7 @@ export function findModuleReferences(program: Program, sourceFiles: readonly Sou
                 }
             }
             for (const ref of referencingFile.typeReferenceDirectives) {
-                const referenced = program.getResolvedTypeReferenceDirectives().get(ref.fileName, ref.resolutionMode || referencingFile.impliedNodeFormat)?.resolvedTypeReferenceDirective;
+                const referenced = program.getResolvedTypeReferenceDirectives().get(ref.fileName, ref.resolutionMode || program.getDefaultResolutionModeForFile(referencingFile))?.resolvedTypeReferenceDirective;
                 if (referenced !== undefined && referenced.resolvedFileName === (searchSourceFile as SourceFile).fileName) {
                     refs.push({ kind: "reference", referencingFile, ref });
                 }
diff --git a/src/services/stringCompletions.ts b/src/services/stringCompletions.ts
index 4000e227a8682..d8e375332ba01 100644
--- a/src/services/stringCompletions.ts
+++ b/src/services/stringCompletions.ts
@@ -197,7 +197,7 @@ export function getStringLiteralCompletions(
     includeSymbol: boolean,
 ): CompletionInfo | undefined {
     if (isInReferenceComment(sourceFile, position)) {
-        const entries = getTripleSlashReferenceCompletion(sourceFile, position, options, host);
+        const entries = getTripleSlashReferenceCompletion(sourceFile, position, program, host);
         return entries && convertPathCompletions(entries);
     }
     if (isInString(sourceFile, position, contextToken)) {
@@ -593,8 +593,8 @@ function getStringLiteralCompletionsFromModuleNamesWorker(sourceFile: SourceFile
     const extensionOptions = getExtensionOptions(compilerOptions, ReferenceKind.ModuleSpecifier, sourceFile, typeChecker, preferences, mode);
 
     return isPathRelativeToScript(literalValue) || !compilerOptions.baseUrl && !compilerOptions.paths && (isRootedDiskPath(literalValue) || isUrl(literalValue))
-        ? getCompletionEntriesForRelativeModules(literalValue, scriptDirectory, compilerOptions, host, scriptPath, extensionOptions)
-        : getCompletionEntriesForNonRelativeModules(literalValue, scriptDirectory, mode, compilerOptions, host, extensionOptions, typeChecker);
+        ? getCompletionEntriesForRelativeModules(literalValue, scriptDirectory, program, host, scriptPath, extensionOptions)
+        : getCompletionEntriesForNonRelativeModules(literalValue, scriptDirectory, mode, program, host, extensionOptions);
 }
 
 interface ExtensionOptions {
@@ -614,20 +614,21 @@ function getExtensionOptions(compilerOptions: CompilerOptions, referenceKind: Re
         resolutionMode,
     };
 }
-function getCompletionEntriesForRelativeModules(literalValue: string, scriptDirectory: string, compilerOptions: CompilerOptions, host: LanguageServiceHost, scriptPath: Path, extensionOptions: ExtensionOptions) {
+function getCompletionEntriesForRelativeModules(literalValue: string, scriptDirectory: string, program: Program, host: LanguageServiceHost, scriptPath: Path, extensionOptions: ExtensionOptions) {
+    const compilerOptions = program.getCompilerOptions();
     if (compilerOptions.rootDirs) {
         return getCompletionEntriesForDirectoryFragmentWithRootDirs(
             compilerOptions.rootDirs,
             literalValue,
             scriptDirectory,
             extensionOptions,
-            compilerOptions,
+            program,
             host,
             scriptPath,
         );
     }
     else {
-        return arrayFrom(getCompletionEntriesForDirectoryFragment(literalValue, scriptDirectory, extensionOptions, host, /*moduleSpecifierIsRelative*/ true, scriptPath).values());
+        return arrayFrom(getCompletionEntriesForDirectoryFragment(literalValue, scriptDirectory, extensionOptions, program, host, /*moduleSpecifierIsRelative*/ true, scriptPath).values());
     }
 }
 
@@ -665,12 +666,13 @@ function getBaseDirectoriesFromRootDirs(rootDirs: string[], basePath: string, sc
     );
 }
 
-function getCompletionEntriesForDirectoryFragmentWithRootDirs(rootDirs: string[], fragment: string, scriptDirectory: string, extensionOptions: ExtensionOptions, compilerOptions: CompilerOptions, host: LanguageServiceHost, exclude: string): readonly NameAndKind[] {
+function getCompletionEntriesForDirectoryFragmentWithRootDirs(rootDirs: string[], fragment: string, scriptDirectory: string, extensionOptions: ExtensionOptions, program: Program, host: LanguageServiceHost, exclude: string): readonly NameAndKind[] {
+    const compilerOptions = program.getCompilerOptions();
     const basePath = compilerOptions.project || host.getCurrentDirectory();
     const ignoreCase = !(host.useCaseSensitiveFileNames && host.useCaseSensitiveFileNames());
     const baseDirectories = getBaseDirectoriesFromRootDirs(rootDirs, basePath, scriptDirectory, ignoreCase);
     return deduplicate<NameAndKind>(
-        flatMap(baseDirectories, baseDirectory => arrayFrom(getCompletionEntriesForDirectoryFragment(fragment, baseDirectory, extensionOptions, host, /*moduleSpecifierIsRelative*/ true, exclude).values())),
+        flatMap(baseDirectories, baseDirectory => arrayFrom(getCompletionEntriesForDirectoryFragment(fragment, baseDirectory, extensionOptions, program, host, /*moduleSpecifierIsRelative*/ true, exclude).values())),
         (itemA, itemB) => itemA.name === itemB.name && itemA.kind === itemB.kind && itemA.extension === itemB.extension,
     );
 }
@@ -686,6 +688,7 @@ function getCompletionEntriesForDirectoryFragment(
     fragment: string,
     scriptDirectory: string,
     extensionOptions: ExtensionOptions,
+    program: Program,
     host: LanguageServiceHost,
     moduleSpecifierIsRelative: boolean,
     exclude?: string,
@@ -725,7 +728,7 @@ function getCompletionEntriesForDirectoryFragment(
                 if (versionPaths) {
                     const packageDirectory = getDirectoryPath(packageJsonPath);
                     const pathInPackage = absolutePath.slice(ensureTrailingDirectorySeparator(packageDirectory).length);
-                    if (addCompletionEntriesFromPaths(result, pathInPackage, packageDirectory, extensionOptions, host, versionPaths)) {
+                    if (addCompletionEntriesFromPaths(result, pathInPackage, packageDirectory, extensionOptions, program, host, versionPaths)) {
                         // A true result means one of the `versionPaths` was matched, which will block relative resolution
                         // to files and folders from here. All reachable paths given the pattern match are already added.
                         return result;
@@ -748,7 +751,7 @@ function getCompletionEntriesForDirectoryFragment(
                 continue;
             }
 
-            const { name, extension } = getFilenameWithExtensionOption(getBaseFileName(filePath), host.getCompilationSettings(), extensionOptions, /*isExportsWildcard*/ false);
+            const { name, extension } = getFilenameWithExtensionOption(getBaseFileName(filePath), program, extensionOptions, /*isExportsWildcard*/ false);
             result.add(nameAndKind(name, ScriptElementKind.scriptElement, extension));
         }
     }
@@ -768,7 +771,7 @@ function getCompletionEntriesForDirectoryFragment(
     return result;
 }
 
-function getFilenameWithExtensionOption(name: string, compilerOptions: CompilerOptions, extensionOptions: ExtensionOptions, isExportsWildcard: boolean): { name: string; extension: Extension | undefined; } {
+function getFilenameWithExtensionOption(name: string, program: Program, extensionOptions: ExtensionOptions, isExportsWildcard: boolean): { name: string; extension: Extension | undefined; } {
     const nonJsResult = moduleSpecifiers.tryGetRealFileNameForNonJsDeclarationFileName(name);
     if (nonJsResult) {
         return { name: nonJsResult, extension: tryGetExtensionFromPath(nonJsResult) };
@@ -779,7 +782,8 @@ function getFilenameWithExtensionOption(name: string, compilerOptions: CompilerO
 
     let allowedEndings = getModuleSpecifierPreferences(
         { importModuleSpecifierEnding: extensionOptions.endingPreference },
-        compilerOptions,
+        program,
+        program.getCompilerOptions(),
         extensionOptions.importingSourceFile,
     ).getAllowedEndingsInPreferredOrder(extensionOptions.resolutionMode);
 
@@ -793,7 +797,7 @@ function getFilenameWithExtensionOption(name: string, compilerOptions: CompilerO
         if (fileExtensionIsOneOf(name, supportedTSImplementationExtensions)) {
             return { name, extension: tryGetExtensionFromPath(name) };
         }
-        const outputExtension = moduleSpecifiers.tryGetJSExtensionForFile(name, compilerOptions);
+        const outputExtension = moduleSpecifiers.tryGetJSExtensionForFile(name, program.getCompilerOptions());
         return outputExtension
             ? { name: changeExtension(name, outputExtension), extension: outputExtension }
             : { name, extension: tryGetExtensionFromPath(name) };
@@ -807,7 +811,7 @@ function getFilenameWithExtensionOption(name: string, compilerOptions: CompilerO
         return { name: removeFileExtension(name), extension: tryGetExtensionFromPath(name) };
     }
 
-    const outputExtension = moduleSpecifiers.tryGetJSExtensionForFile(name, compilerOptions);
+    const outputExtension = moduleSpecifiers.tryGetJSExtensionForFile(name, program.getCompilerOptions());
     return outputExtension
         ? { name: changeExtension(name, outputExtension), extension: outputExtension }
         : { name, extension: tryGetExtensionFromPath(name) };
@@ -819,6 +823,7 @@ function addCompletionEntriesFromPaths(
     fragment: string,
     baseDirectory: string,
     extensionOptions: ExtensionOptions,
+    program: Program,
     host: LanguageServiceHost,
     paths: MapLike<string[]>,
 ) {
@@ -830,7 +835,7 @@ function addCompletionEntriesFromPaths(
         const lengthB = typeof patternB === "object" ? patternB.prefix.length : b.length;
         return compareValues(lengthB, lengthA);
     };
-    return addCompletionEntriesFromPathsOrExports(result, /*isExports*/ false, fragment, baseDirectory, extensionOptions, host, getOwnKeys(paths), getPatternsForKey, comparePaths);
+    return addCompletionEntriesFromPathsOrExports(result, /*isExports*/ false, fragment, baseDirectory, extensionOptions, program, host, getOwnKeys(paths), getPatternsForKey, comparePaths);
 }
 
 /** @returns whether `fragment` was a match for any `paths` (which should indicate whether any other path completions should be offered) */
@@ -840,6 +845,7 @@ function addCompletionEntriesFromPathsOrExports(
     fragment: string,
     baseDirectory: string,
     extensionOptions: ExtensionOptions,
+    program: Program,
     host: LanguageServiceHost,
     keys: readonly string[],
     getPatternsForKey: (key: string) => string[] | undefined,
@@ -874,7 +880,7 @@ function addCompletionEntriesFromPathsOrExports(
             if (typeof pathPattern === "string" || matchedPath === undefined || comparePaths(key, matchedPath) !== Comparison.GreaterThan) {
                 pathResults.push({
                     matchedPattern: isMatch,
-                    results: getCompletionsForPathMapping(keyWithoutLeadingDotSlash, patterns, fragment, baseDirectory, extensionOptions, isExports && isMatch, host)
+                    results: getCompletionsForPathMapping(keyWithoutLeadingDotSlash, patterns, fragment, baseDirectory, extensionOptions, isExports && isMatch, program, host)
                         .map(({ name, kind, extension }) => nameAndKind(name, kind, extension)),
                 });
             }
@@ -896,11 +902,12 @@ function getCompletionEntriesForNonRelativeModules(
     fragment: string,
     scriptPath: string,
     mode: ResolutionMode,
-    compilerOptions: CompilerOptions,
+    program: Program,
     host: LanguageServiceHost,
     extensionOptions: ExtensionOptions,
-    typeChecker: TypeChecker,
 ): readonly NameAndKind[] {
+    const typeChecker = program.getTypeChecker();
+    const compilerOptions = program.getCompilerOptions();
     const { baseUrl, paths } = compilerOptions;
 
     const result = createNameAndKindSet();
@@ -908,12 +915,12 @@ function getCompletionEntriesForNonRelativeModules(
 
     if (baseUrl) {
         const absolute = normalizePath(combinePaths(host.getCurrentDirectory(), baseUrl));
-        getCompletionEntriesForDirectoryFragment(fragment, absolute, extensionOptions, host, /*moduleSpecifierIsRelative*/ false, /*exclude*/ undefined, result);
+        getCompletionEntriesForDirectoryFragment(fragment, absolute, extensionOptions, program, host, /*moduleSpecifierIsRelative*/ false, /*exclude*/ undefined, result);
     }
 
     if (paths) {
         const absolute = getPathsBasePath(compilerOptions, host)!;
-        addCompletionEntriesFromPaths(result, fragment, absolute, extensionOptions, host, paths);
+        addCompletionEntriesFromPaths(result, fragment, absolute, extensionOptions, program, host, paths);
     }
 
     const fragmentDirectory = getFragmentDirectory(fragment);
@@ -921,7 +928,7 @@ function getCompletionEntriesForNonRelativeModules(
         result.add(nameAndKind(ambientName, ScriptElementKind.externalModuleName, /*extension*/ undefined));
     }
 
-    getCompletionEntriesFromTypings(host, compilerOptions, scriptPath, fragmentDirectory, extensionOptions, result);
+    getCompletionEntriesFromTypings(host, program, scriptPath, fragmentDirectory, extensionOptions, result);
 
     if (moduleResolutionUsesNodeModules(moduleResolution)) {
         // If looking for a global package name, don't just include everything in `node_modules` because that includes dependencies' own dependencies.
@@ -940,7 +947,7 @@ function getCompletionEntriesForNonRelativeModules(
             let ancestorLookup: (directory: string) => void | undefined = ancestor => {
                 const nodeModules = combinePaths(ancestor, "node_modules");
                 if (tryDirectoryExists(host, nodeModules)) {
-                    getCompletionEntriesForDirectoryFragment(fragment, nodeModules, extensionOptions, host, /*moduleSpecifierIsRelative*/ false, /*exclude*/ undefined, result);
+                    getCompletionEntriesForDirectoryFragment(fragment, nodeModules, extensionOptions, program, host, /*moduleSpecifierIsRelative*/ false, /*exclude*/ undefined, result);
                 }
             };
             if (fragmentDirectory && getResolvePackageJsonExports(compilerOptions)) {
@@ -977,6 +984,7 @@ function getCompletionEntriesForNonRelativeModules(
                                 fragmentSubpath,
                                 packageDirectory,
                                 extensionOptions,
+                                program,
                                 host,
                                 keys,
                                 key => singleElementArray(getPatternFromFirstMatchingCondition(exports[key], conditions)),
@@ -1020,6 +1028,7 @@ function getCompletionsForPathMapping(
     packageDirectory: string,
     extensionOptions: ExtensionOptions,
     isExportsWildcard: boolean,
+    program: Program,
     host: LanguageServiceHost,
 ): readonly NameAndKind[] {
     if (!endsWith(path, "*")) {
@@ -1031,9 +1040,9 @@ function getCompletionsForPathMapping(
     const remainingFragment = tryRemovePrefix(fragment, pathPrefix);
     if (remainingFragment === undefined) {
         const starIsFullPathComponent = path[path.length - 2] === "/";
-        return starIsFullPathComponent ? justPathMappingName(pathPrefix, ScriptElementKind.directory) : flatMap(patterns, pattern => getModulesForPathsPattern("", packageDirectory, pattern, extensionOptions, isExportsWildcard, host)?.map(({ name, ...rest }) => ({ name: pathPrefix + name, ...rest })));
+        return starIsFullPathComponent ? justPathMappingName(pathPrefix, ScriptElementKind.directory) : flatMap(patterns, pattern => getModulesForPathsPattern("", packageDirectory, pattern, extensionOptions, isExportsWildcard, program, host)?.map(({ name, ...rest }) => ({ name: pathPrefix + name, ...rest })));
     }
-    return flatMap(patterns, pattern => getModulesForPathsPattern(remainingFragment, packageDirectory, pattern, extensionOptions, isExportsWildcard, host));
+    return flatMap(patterns, pattern => getModulesForPathsPattern(remainingFragment, packageDirectory, pattern, extensionOptions, isExportsWildcard, program, host));
 
     function justPathMappingName(name: string, kind: ScriptElementKind.directory | ScriptElementKind.scriptElement): readonly NameAndKind[] {
         return startsWith(name, fragment) ? [{ name: removeTrailingDirectorySeparator(name), kind, extension: undefined }] : emptyArray;
@@ -1046,6 +1055,7 @@ function getModulesForPathsPattern(
     pattern: string,
     extensionOptions: ExtensionOptions,
     isExportsWildcard: boolean,
+    program: Program,
     host: LanguageServiceHost,
 ): readonly NameAndKind[] | undefined {
     if (!host.readDirectory) {
@@ -1094,7 +1104,7 @@ function getModulesForPathsPattern(
             if (containsSlash(trimmedWithPattern)) {
                 return directoryResult(getPathComponents(removeLeadingDirectorySeparator(trimmedWithPattern))[1]);
             }
-            const { name, extension } = getFilenameWithExtensionOption(trimmedWithPattern, host.getCompilationSettings(), extensionOptions, isExportsWildcard);
+            const { name, extension } = getFilenameWithExtensionOption(trimmedWithPattern, program, extensionOptions, isExportsWildcard);
             return nameAndKind(name, ScriptElementKind.scriptElement, extension);
         }
     });
@@ -1138,7 +1148,8 @@ function getAmbientModuleCompletions(fragment: string, fragmentDirectory: string
     return nonRelativeModuleNames;
 }
 
-function getTripleSlashReferenceCompletion(sourceFile: SourceFile, position: number, compilerOptions: CompilerOptions, host: LanguageServiceHost): readonly PathCompletion[] | undefined {
+function getTripleSlashReferenceCompletion(sourceFile: SourceFile, position: number, program: Program, host: LanguageServiceHost): readonly PathCompletion[] | undefined {
+    const compilerOptions = program.getCompilerOptions();
     const token = getTokenAtPosition(sourceFile, position);
     const commentRanges = getLeadingCommentRanges(sourceFile.text, token.pos);
     const range = commentRanges && find(commentRanges, commentRange => position >= commentRange.pos && position <= commentRange.end);
@@ -1153,13 +1164,14 @@ function getTripleSlashReferenceCompletion(sourceFile: SourceFile, position: num
 
     const [, prefix, kind, toComplete] = match;
     const scriptPath = getDirectoryPath(sourceFile.path);
-    const names = kind === "path" ? getCompletionEntriesForDirectoryFragment(toComplete, scriptPath, getExtensionOptions(compilerOptions, ReferenceKind.Filename, sourceFile), host, /*moduleSpecifierIsRelative*/ true, sourceFile.path)
-        : kind === "types" ? getCompletionEntriesFromTypings(host, compilerOptions, scriptPath, getFragmentDirectory(toComplete), getExtensionOptions(compilerOptions, ReferenceKind.ModuleSpecifier, sourceFile))
+    const names = kind === "path" ? getCompletionEntriesForDirectoryFragment(toComplete, scriptPath, getExtensionOptions(compilerOptions, ReferenceKind.Filename, sourceFile), program, host, /*moduleSpecifierIsRelative*/ true, sourceFile.path)
+        : kind === "types" ? getCompletionEntriesFromTypings(host, program, scriptPath, getFragmentDirectory(toComplete), getExtensionOptions(compilerOptions, ReferenceKind.ModuleSpecifier, sourceFile))
         : Debug.fail();
     return addReplacementSpans(toComplete, range.pos + prefix.length, arrayFrom(names.values()));
 }
 
-function getCompletionEntriesFromTypings(host: LanguageServiceHost, options: CompilerOptions, scriptPath: string, fragmentDirectory: string | undefined, extensionOptions: ExtensionOptions, result = createNameAndKindSet()): NameAndKindSet {
+function getCompletionEntriesFromTypings(host: LanguageServiceHost, program: Program, scriptPath: string, fragmentDirectory: string | undefined, extensionOptions: ExtensionOptions, result = createNameAndKindSet()): NameAndKindSet {
+    const options = program.getCompilerOptions();
     // Check for typings specified in compiler options
     const seen = new Map<string, true>();
 
@@ -1194,7 +1206,7 @@ function getCompletionEntriesFromTypings(host: LanguageServiceHost, options: Com
                 const baseDirectory = combinePaths(directory, typeDirectoryName);
                 const remainingFragment = tryRemoveDirectoryPrefix(fragmentDirectory, packageName, hostGetCanonicalFileName(host));
                 if (remainingFragment !== undefined) {
-                    getCompletionEntriesForDirectoryFragment(remainingFragment, baseDirectory, extensionOptions, host, /*moduleSpecifierIsRelative*/ false, /*exclude*/ undefined, result);
+                    getCompletionEntriesForDirectoryFragment(remainingFragment, baseDirectory, extensionOptions, program, host, /*moduleSpecifierIsRelative*/ false, /*exclude*/ undefined, result);
                 }
             }
         }
diff --git a/src/services/suggestionDiagnostics.ts b/src/services/suggestionDiagnostics.ts
index cc597320d58ad..91e99ba9450db 100644
--- a/src/services/suggestionDiagnostics.ts
+++ b/src/services/suggestionDiagnostics.ts
@@ -66,7 +66,7 @@ export function computeSuggestionDiagnostics(sourceFile: SourceFile, program: Pr
     program.getSemanticDiagnostics(sourceFile, cancellationToken);
     const diags: DiagnosticWithLocation[] = [];
     const checker = program.getTypeChecker();
-    const isCommonJSFile = sourceFile.impliedNodeFormat === ModuleKind.CommonJS || fileExtensionIsOneOf(sourceFile.fileName, [Extension.Cts, Extension.Cjs]);
+    const isCommonJSFile = program.getImpliedNodeFormatForEmit(sourceFile) === ModuleKind.CommonJS || fileExtensionIsOneOf(sourceFile.fileName, [Extension.Cts, Extension.Cjs]);
 
     if (
         !isCommonJSFile &&
diff --git a/src/services/utilities.ts b/src/services/utilities.ts
index d8d05869a0bed..dade1fe37bdd3 100644
--- a/src/services/utilities.ts
+++ b/src/services/utilities.ts
@@ -97,6 +97,7 @@ import {
     getEmitModuleKind,
     getEmitScriptTarget,
     getExternalModuleImportEqualsDeclarationExpression,
+    getImpliedNodeFormatForEmitWorker,
     getImpliedNodeFormatForFile,
     getImpliedNodeFormatForFileWorker,
     getIndentString,
@@ -2486,6 +2487,8 @@ export function createModuleSpecifierResolutionHost(program: Program, host: Lang
         getNearestAncestorDirectoryWithPackageJson: maybeBind(host, host.getNearestAncestorDirectoryWithPackageJson),
         getFileIncludeReasons: () => program.getFileIncludeReasons(),
         getCommonSourceDirectory: () => program.getCommonSourceDirectory(),
+        getDefaultResolutionModeForFile: file => program.getDefaultResolutionModeForFile(file),
+        getModeForResolutionAtIndex: (file, index) => program.getModeForResolutionAtIndex(file, index),
     };
 }
 
@@ -4262,11 +4265,13 @@ export function fileShouldUseJavaScriptRequire(file: SourceFile | string, progra
     if (!hasJSFileExtension(fileName)) {
         return false;
     }
-    const compilerOptions = program.getCompilerOptions();
+    const compilerOptions = typeof file === "string" ? program.getCompilerOptions() : program.getCompilerOptionsForFile(file);
     const moduleKind = getEmitModuleKind(compilerOptions);
-    const impliedNodeFormat = typeof file === "string"
-        ? getImpliedNodeFormatForFile(toPath(file, host.getCurrentDirectory(), hostGetCanonicalFileName(host)), program.getPackageJsonInfoCache?.(), host, compilerOptions)
-        : file.impliedNodeFormat;
+    const sourceFileLike = typeof file === "string" ? {
+        fileName: file,
+        impliedNodeFormat: getImpliedNodeFormatForFile(toPath(file, host.getCurrentDirectory(), hostGetCanonicalFileName(host)), program.getPackageJsonInfoCache?.(), host, compilerOptions),
+    } : file;
+    const impliedNodeFormat = getImpliedNodeFormatForEmitWorker(sourceFileLike, compilerOptions);
 
     if (impliedNodeFormat === ModuleKind.ESNext) {
         return false;
diff --git a/src/testRunner/unittests/tsc/projectReferences.ts b/src/testRunner/unittests/tsc/projectReferences.ts
index f0437860f0d92..95768a24c21b3 100644
--- a/src/testRunner/unittests/tsc/projectReferences.ts
+++ b/src/testRunner/unittests/tsc/projectReferences.ts
@@ -44,6 +44,51 @@ describe("unittests:: tsc:: projectReferences::", () => {
         commandLineArgs: ["--p", "src/project"],
     });
 
+    verifyTsc({
+        scenario: "projectReferences",
+        subScenario: "default import interop uses referenced project settings",
+        fs: () =>
+            loadProjectFromFiles({
+                "/node_modules/ambiguous-package/package.json": `{ "name": "ambiguous-package" }`,
+                "/node_modules/ambiguous-package/index.d.ts": "export declare const ambiguous: number;",
+                "/node_modules/esm-package/package.json": `{ "name": "esm-package", "type": "module" }`,
+                "/node_modules/esm-package/index.d.ts": "export declare const esm: number;",
+                "/lib/tsconfig.json": jsonToReadableText({
+                    compilerOptions: {
+                        composite: true,
+                        declaration: true,
+                        rootDir: "src",
+                        outDir: "dist",
+                        module: "esnext",
+                        moduleResolution: "bundler",
+                    },
+                    include: ["src"],
+                }),
+                "/lib/src/a.ts": "export const a = 0;",
+                "/lib/dist/a.d.ts": "export declare const a = 0;",
+                "/app/tsconfig.json": jsonToReadableText({
+                    compilerOptions: {
+                        module: "esnext",
+                        moduleResolution: "bundler",
+                        rootDir: "src",
+                        outDir: "dist",
+                    },
+                    include: ["src"],
+                    references: [
+                        { path: "../lib" },
+                    ],
+                }),
+                "/app/src/local.ts": "export const local = 0;",
+                "/app/src/index.ts": `
+                    import local from "./local"; // Error
+                    import esm from "esm-package"; // Error
+                    import referencedSource from "../../lib/src/a"; // Error
+                    import referencedDeclaration from "../../lib/dist/a"; // Error
+                    import ambiguous from "ambiguous-package"; // Ok`,
+            }),
+        commandLineArgs: ["--p", "app", "--pretty", "false"],
+    });
+
     verifyTsc({
         scenario: "projectReferences",
         subScenario: "referencing ambient const enum from referenced project with preserveConstEnums",
diff --git a/src/testRunner/unittests/tscWatch/incremental.ts b/src/testRunner/unittests/tscWatch/incremental.ts
index 27f3a435de359..8e86fdfb93fd8 100644
--- a/src/testRunner/unittests/tscWatch/incremental.ts
+++ b/src/testRunner/unittests/tscWatch/incremental.ts
@@ -178,19 +178,19 @@ describe("unittests:: tsc-watch:: emit file --incremental", () => {
                     version: system.createHash(libFile.content),
                     signature: system.createHash(libFile.content),
                     affectsGlobalScope: true,
-                    impliedFormat: undefined,
+                    impliedFormat: ts.ModuleKind.CommonJS,
                 });
                 assert.deepEqual(state.fileInfos.get(file1.path as ts.Path), {
                     version: system.createHash(file1.content),
                     signature: system.createHash(file1.content),
                     affectsGlobalScope: undefined,
-                    impliedFormat: undefined,
+                    impliedFormat: ts.ModuleKind.CommonJS,
                 });
                 assert.deepEqual(state.fileInfos.get(file2.path as ts.Path), {
                     version: system.createHash(fileModified.content),
                     signature: system.createHash(fileModified.content),
                     affectsGlobalScope: undefined,
-                    impliedFormat: undefined,
+                    impliedFormat: ts.ModuleKind.CommonJS,
                 });
 
                 assert.deepEqual(state.compilerOptions, {
diff --git a/tests/baselines/reference/allowJsCrossMonorepoPackage.trace.json b/tests/baselines/reference/allowJsCrossMonorepoPackage.trace.json
index e6ee863686b71..c2bc516aad083 100644
--- a/tests/baselines/reference/allowJsCrossMonorepoPackage.trace.json
+++ b/tests/baselines/reference/allowJsCrossMonorepoPackage.trace.json
@@ -1,8 +1,9 @@
 [
+    "Found 'package.json' at '/packages/main/package.json'.",
     "======== Resolving module 'shared' from '/packages/main/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "Found 'package.json' at '/packages/main/package.json'.",
+    "File '/packages/main/package.json' exists according to earlier cached lookups.",
     "Loading module 'shared' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Found 'package.json' at '/packages/main/node_modules/shared/package.json'.",
@@ -46,6 +47,7 @@
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "Resolving real path for '/packages/main/node_modules/shared/index.js', result '/packages/shared/index.js'.",
     "======== Module name 'shared' was successfully resolved to '/packages/shared/index.js' with Package ID 'shared/index.js@1.0.0'. ========",
+    "Found 'package.json' at '/packages/shared/package.json'.",
     "======== Resolving module './utils.js' from '/packages/shared/index.js'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -56,10 +58,11 @@
     "File '/packages/shared/utils.d.ts' does not exist.",
     "File '/packages/shared/utils.js' exists - use it as a name resolution result.",
     "======== Module name './utils.js' was successfully resolved to '/packages/shared/utils.js'. ========",
+    "File '/packages/shared/package.json' exists according to earlier cached lookups.",
     "======== Resolving module 'pkg' from '/packages/shared/utils.js'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "Found 'package.json' at '/packages/shared/package.json'.",
+    "File '/packages/shared/package.json' exists according to earlier cached lookups.",
     "Loading module 'pkg' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Directory '/packages/shared/node_modules' does not exist, skipping all lookups in it.",
@@ -73,6 +76,11 @@
     "File '/node_modules/pkg/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/pkg/index.d.ts', result '/node_modules/pkg/index.d.ts'.",
     "======== Module name 'pkg' was successfully resolved to '/node_modules/pkg/index.d.ts'. ========",
+    "File '/node_modules/pkg/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/packages/main/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +95,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/packages/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/packages/main/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -101,6 +111,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/packages/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/packages/main/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -115,6 +127,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/packages/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/packages/main/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,6 +143,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/packages/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/packages/main/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -143,6 +159,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/packages/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/packages/main/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -156,5 +174,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/packages/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/api/typescript.d.ts b/tests/baselines/reference/api/typescript.d.ts
index 76f97340bab0f..ad1b05ed05eb7 100644
--- a/tests/baselines/reference/api/typescript.d.ts
+++ b/tests/baselines/reference/api/typescript.d.ts
@@ -5961,19 +5961,67 @@ declare namespace ts {
         isSourceFileFromExternalLibrary(file: SourceFile): boolean;
         isSourceFileDefaultLibrary(file: SourceFile): boolean;
         /**
-         * Calculates the final resolution mode for a given module reference node. This is the resolution mode explicitly provided via import
-         * attributes, if present, or the syntax the usage would have if emitted to JavaScript. In `--module node16` or `nodenext`, this may
-         * depend on the file's `impliedNodeFormat`. In `--module preserve`, it depends only on the input syntax of the reference. In other
-         * `module` modes, when overriding import attributes are not provided, this function returns `undefined`, as the result would have no
-         * impact on module resolution, emit, or type checking.
+         * Calculates the final resolution mode for a given module reference node. This function only returns a result when module resolution
+         * settings allow differing resolution between ESM imports and CJS requires, or when a mode is explicitly provided via import attributes,
+         * which cause an `import` or `require` condition to be used during resolution regardless of module resolution settings. In absence of
+         * overriding attributes, and in modes that support differing resolution, the result indicates the syntax the usage would emit to JavaScript.
+         * Some examples:
+         *
+         * ```ts
+         * // tsc foo.mts --module nodenext
+         * import {} from "mod";
+         * // Result: ESNext - the import emits as ESM due to `impliedNodeFormat` set by .mts file extension
+         *
+         * // tsc foo.cts --module nodenext
+         * import {} from "mod";
+         * // Result: CommonJS - the import emits as CJS due to `impliedNodeFormat` set by .cts file extension
+         *
+         * // tsc foo.ts --module preserve --moduleResolution bundler
+         * import {} from "mod";
+         * // Result: ESNext - the import emits as ESM due to `--module preserve` and `--moduleResolution bundler`
+         * // supports conditional imports/exports
+         *
+         * // tsc foo.ts --module preserve --moduleResolution node10
+         * import {} from "mod";
+         * // Result: undefined - the import emits as ESM due to `--module preserve`, but `--moduleResolution node10`
+         * // does not support conditional imports/exports
+         *
+         * // tsc foo.ts --module commonjs --moduleResolution node10
+         * import type {} from "mod" with { "resolution-mode": "import" };
+         * // Result: ESNext - conditional imports/exports always supported with "resolution-mode" attribute
+         * ```
          */
         getModeForUsageLocation(file: SourceFile, usage: StringLiteralLike): ResolutionMode;
         /**
-         * Calculates the final resolution mode for an import at some index within a file's `imports` list. This is the resolution mode
-         * explicitly provided via import attributes, if present, or the syntax the usage would have if emitted to JavaScript. In
-         * `--module node16` or `nodenext`, this may depend on the file's `impliedNodeFormat`. In `--module preserve`, it depends only on the
-         * input syntax of the reference. In other `module` modes, when overriding import attributes are not provided, this function returns
-         * `undefined`, as the result would have no impact on module resolution, emit, or type checking.
+         * Calculates the final resolution mode for an import at some index within a file's `imports` list. This function only returns a result
+         * when module resolution settings allow differing resolution between ESM imports and CJS requires, or when a mode is explicitly provided
+         * via import attributes, which cause an `import` or `require` condition to be used during resolution regardless of module resolution
+         * settings. In absence of overriding attributes, and in modes that support differing resolution, the result indicates the syntax the
+         * usage would emit to JavaScript. Some examples:
+         *
+         * ```ts
+         * // tsc foo.mts --module nodenext
+         * import {} from "mod";
+         * // Result: ESNext - the import emits as ESM due to `impliedNodeFormat` set by .mts file extension
+         *
+         * // tsc foo.cts --module nodenext
+         * import {} from "mod";
+         * // Result: CommonJS - the import emits as CJS due to `impliedNodeFormat` set by .cts file extension
+         *
+         * // tsc foo.ts --module preserve --moduleResolution bundler
+         * import {} from "mod";
+         * // Result: ESNext - the import emits as ESM due to `--module preserve` and `--moduleResolution bundler`
+         * // supports conditional imports/exports
+         *
+         * // tsc foo.ts --module preserve --moduleResolution node10
+         * import {} from "mod";
+         * // Result: undefined - the import emits as ESM due to `--module preserve`, but `--moduleResolution node10`
+         * // does not support conditional imports/exports
+         *
+         * // tsc foo.ts --module commonjs --moduleResolution node10
+         * import type {} from "mod" with { "resolution-mode": "import" };
+         * // Result: ESNext - conditional imports/exports always supported with "resolution-mode" attribute
+         * ```
          */
         getModeForResolutionAtIndex(file: SourceFile, index: number): ResolutionMode;
         getProjectReferences(): readonly ProjectReference[] | undefined;
@@ -9325,24 +9373,43 @@ declare namespace ts {
     function getModeForResolutionAtIndex(file: SourceFile, index: number, compilerOptions: CompilerOptions): ResolutionMode;
     /**
      * Use `program.getModeForUsageLocation`, which retrieves the correct `compilerOptions`, instead of this function whenever possible.
-     * Calculates the final resolution mode for a given module reference node. This is the resolution mode explicitly provided via import
-     * attributes, if present, or the syntax the usage would have if emitted to JavaScript. In `--module node16` or `nodenext`, this may
-     * depend on the file's `impliedNodeFormat`. In `--module preserve`, it depends only on the input syntax of the reference. In other
-     * `module` modes, when overriding import attributes are not provided, this function returns `undefined`, as the result would have no
-     * impact on module resolution, emit, or type checking.
+     * Calculates the final resolution mode for a given module reference node. This function only returns a result when module resolution
+     * settings allow differing resolution between ESM imports and CJS requires, or when a mode is explicitly provided via import attributes,
+     * which cause an `import` or `require` condition to be used during resolution regardless of module resolution settings. In absence of
+     * overriding attributes, and in modes that support differing resolution, the result indicates the syntax the usage would emit to JavaScript.
+     * Some examples:
+     *
+     * ```ts
+     * // tsc foo.mts --module nodenext
+     * import {} from "mod";
+     * // Result: ESNext - the import emits as ESM due to `impliedNodeFormat` set by .mts file extension
+     *
+     * // tsc foo.cts --module nodenext
+     * import {} from "mod";
+     * // Result: CommonJS - the import emits as CJS due to `impliedNodeFormat` set by .cts file extension
+     *
+     * // tsc foo.ts --module preserve --moduleResolution bundler
+     * import {} from "mod";
+     * // Result: ESNext - the import emits as ESM due to `--module preserve` and `--moduleResolution bundler`
+     * // supports conditional imports/exports
+     *
+     * // tsc foo.ts --module preserve --moduleResolution node10
+     * import {} from "mod";
+     * // Result: undefined - the import emits as ESM due to `--module preserve`, but `--moduleResolution node10`
+     * // does not support conditional imports/exports
+     *
+     * // tsc foo.ts --module commonjs --moduleResolution node10
+     * import type {} from "mod" with { "resolution-mode": "import" };
+     * // Result: ESNext - conditional imports/exports always supported with "resolution-mode" attribute
+     * ```
+     *
      * @param file The file the import or import-like reference is contained within
      * @param usage The module reference string
      * @param compilerOptions The compiler options for the program that owns the file. If the file belongs to a referenced project, the compiler options
      * should be the options of the referenced project, not the referencing project.
      * @returns The final resolution mode of the import
      */
-    function getModeForUsageLocation(
-        file: {
-            impliedNodeFormat?: ResolutionMode;
-        },
-        usage: StringLiteralLike,
-        compilerOptions: CompilerOptions,
-    ): ModuleKind.CommonJS | ModuleKind.ESNext | undefined;
+    function getModeForUsageLocation(file: SourceFile, usage: StringLiteralLike, compilerOptions: CompilerOptions): ResolutionMode;
     function getConfigFileParsingDiagnostics(configFileParseResult: ParsedCommandLine): readonly Diagnostic[];
     /**
      * A function for determining if a given file is esm or cjs format, assuming modern node module resolution rules, as configured by the
diff --git a/tests/baselines/reference/bundlerConditionsExcludesNode(module=esnext).trace.json b/tests/baselines/reference/bundlerConditionsExcludesNode(module=esnext).trace.json
index 2b67a19c808e7..60c6328ff89ad 100644
--- a/tests/baselines/reference/bundlerConditionsExcludesNode(module=esnext).trace.json
+++ b/tests/baselines/reference/bundlerConditionsExcludesNode(module=esnext).trace.json
@@ -1,11 +1,14 @@
 [
+    "Found 'package.json' at '/node_modules/conditions/package.json'.",
+    "File '/node_modules/conditions/package.json' exists according to earlier cached lookups.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'conditions' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'conditions' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/conditions/package.json'.",
+    "File '/node_modules/conditions/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Saw non-matching condition 'node'.",
     "Matched 'exports' condition 'default'.",
@@ -19,6 +22,8 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/conditions/index.web.d.ts', result '/node_modules/conditions/index.web.d.ts'.",
     "======== Module name 'conditions' was successfully resolved to '/node_modules/conditions/index.web.d.ts' with Package ID 'conditions/index.web.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +36,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +50,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +78,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +92,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,5 +105,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerConditionsExcludesNode(module=preserve).trace.json b/tests/baselines/reference/bundlerConditionsExcludesNode(module=preserve).trace.json
index 2b67a19c808e7..60c6328ff89ad 100644
--- a/tests/baselines/reference/bundlerConditionsExcludesNode(module=preserve).trace.json
+++ b/tests/baselines/reference/bundlerConditionsExcludesNode(module=preserve).trace.json
@@ -1,11 +1,14 @@
 [
+    "Found 'package.json' at '/node_modules/conditions/package.json'.",
+    "File '/node_modules/conditions/package.json' exists according to earlier cached lookups.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'conditions' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'conditions' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/conditions/package.json'.",
+    "File '/node_modules/conditions/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Saw non-matching condition 'node'.",
     "Matched 'exports' condition 'default'.",
@@ -19,6 +22,8 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/conditions/index.web.d.ts', result '/node_modules/conditions/index.web.d.ts'.",
     "======== Module name 'conditions' was successfully resolved to '/node_modules/conditions/index.web.d.ts' with Package ID 'conditions/index.web.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +36,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +50,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +78,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +92,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,5 +105,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
index e67efed2af66b..6a9e7816773e6 100644
--- a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
+++ b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
@@ -1,7 +1,9 @@
 [
+    "File '/app/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '../lib' from '/app/test.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
-    "Resolving in CJS mode with conditions 'import', 'types'.",
+    "Resolving in CJS mode with conditions 'require', 'types'.",
     "Loading module as file / folder, candidate module location '/lib', target file types: TypeScript, JavaScript, Declaration, JSON.",
     "File '/lib.ts' does not exist.",
     "File '/lib.tsx' does not exist.",
@@ -18,6 +20,10 @@
     "File '/lib/cjs/index.tsx' does not exist.",
     "File '/lib/cjs/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name '../lib' was successfully resolved to '/lib/cjs/index.d.ts'. ========",
+    "File '/lib/cjs/package.json' does not exist.",
+    "File '/lib/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +37,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +52,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +67,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +82,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +97,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +112,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -109,6 +127,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +142,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +157,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -148,6 +172,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -161,6 +187,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -174,6 +202,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -187,6 +217,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -200,6 +232,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -213,6 +247,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -226,6 +262,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -239,6 +277,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -252,6 +292,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -265,6 +307,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -278,6 +322,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -291,6 +337,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -304,6 +352,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -317,6 +367,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -330,6 +382,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -343,6 +397,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -356,6 +412,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -369,6 +427,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -382,6 +442,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -395,6 +457,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -408,6 +472,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -421,6 +487,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -434,6 +502,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -447,6 +517,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -460,6 +532,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -473,6 +547,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -486,6 +562,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -499,6 +577,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -512,6 +592,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -525,6 +607,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -538,6 +622,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -551,6 +637,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -564,6 +652,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -577,6 +667,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -590,6 +682,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -603,6 +697,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -616,6 +712,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -629,6 +727,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -642,6 +742,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -655,6 +757,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -668,6 +772,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -681,6 +787,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -694,6 +802,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -707,6 +817,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -720,6 +832,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -733,6 +847,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -746,6 +862,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -759,6 +877,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -772,6 +892,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -785,6 +907,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -798,6 +922,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -811,6 +937,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -824,6 +952,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -837,6 +967,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -850,6 +982,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -863,6 +997,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -876,6 +1012,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -889,6 +1027,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -902,6 +1042,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -915,6 +1057,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -928,6 +1072,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -941,6 +1087,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -954,6 +1102,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -967,6 +1117,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -980,6 +1132,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -992,5 +1146,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerImportESM(module=esnext).js b/tests/baselines/reference/bundlerImportESM(module=esnext).js
index 48e483322c215..486ca757bd2e3 100644
--- a/tests/baselines/reference/bundlerImportESM(module=esnext).js
+++ b/tests/baselines/reference/bundlerImportESM(module=esnext).js
@@ -16,6 +16,8 @@ import { esm } from "./esm.mjs";
 //// [esm.mjs]
 export var esm = 0;
 //// [not-actually-cjs.cjs]
-export {};
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
 //// [still-not-cjs.js]
-export {};
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).trace.json b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).trace.json
index 3ae9198b3782d..ac875c75ce478 100644
--- a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).trace.json
+++ b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=false).trace.json
@@ -1,4 +1,25 @@
 [
+    "File '/project/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/d/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a' from '/project/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -69,7 +90,7 @@
     "File '/project/d.d.ts' does not exist.",
     "File '/project/d.js' does not exist.",
     "File '/project/d.jsx' does not exist.",
-    "File '/project/d/package.json' does not exist.",
+    "File '/project/d/package.json' does not exist according to earlier cached lookups.",
     "File '/project/d/index.ts' exists - use it as a name resolution result.",
     "======== Module name './d' was successfully resolved to '/project/d/index.ts'. ========",
     "======== Resolving module './d/index' from '/project/main.ts'. ========",
@@ -99,6 +120,8 @@
     "File '/project/e.d.txt.ts' does not exist.",
     "File '/project/e.txt.ts' exists - use it as a name resolution result.",
     "======== Module name './e.txt' was successfully resolved to '/project/e.txt.ts'. ========",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a.ts' from '/project/types.d.ts'. ========",
     "Resolution for module './a.ts' was found in cache from location '/project'.",
     "======== Module name './a.ts' was successfully resolved to '/project/a.ts'. ========",
@@ -109,6 +132,8 @@
     "File name '/project/a.d.ts' has a '.d.ts' extension - stripping it.",
     "File '/project/a.ts' exists - use it as a name resolution result.",
     "======== Module name './a.d.ts' was successfully resolved to '/project/a.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +147,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +162,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -148,6 +177,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -161,6 +192,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -174,6 +207,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -186,5 +221,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=true).trace.json b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=true).trace.json
index 3ae9198b3782d..ac875c75ce478 100644
--- a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=true).trace.json
+++ b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=false,noemit=true).trace.json
@@ -1,4 +1,25 @@
 [
+    "File '/project/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/d/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a' from '/project/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -69,7 +90,7 @@
     "File '/project/d.d.ts' does not exist.",
     "File '/project/d.js' does not exist.",
     "File '/project/d.jsx' does not exist.",
-    "File '/project/d/package.json' does not exist.",
+    "File '/project/d/package.json' does not exist according to earlier cached lookups.",
     "File '/project/d/index.ts' exists - use it as a name resolution result.",
     "======== Module name './d' was successfully resolved to '/project/d/index.ts'. ========",
     "======== Resolving module './d/index' from '/project/main.ts'. ========",
@@ -99,6 +120,8 @@
     "File '/project/e.d.txt.ts' does not exist.",
     "File '/project/e.txt.ts' exists - use it as a name resolution result.",
     "======== Module name './e.txt' was successfully resolved to '/project/e.txt.ts'. ========",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a.ts' from '/project/types.d.ts'. ========",
     "Resolution for module './a.ts' was found in cache from location '/project'.",
     "======== Module name './a.ts' was successfully resolved to '/project/a.ts'. ========",
@@ -109,6 +132,8 @@
     "File name '/project/a.d.ts' has a '.d.ts' extension - stripping it.",
     "File '/project/a.ts' exists - use it as a name resolution result.",
     "======== Module name './a.d.ts' was successfully resolved to '/project/a.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +147,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +162,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -148,6 +177,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -161,6 +192,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -174,6 +207,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -186,5 +221,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).trace.json b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).trace.json
index 3ae9198b3782d..ac875c75ce478 100644
--- a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).trace.json
+++ b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=false).trace.json
@@ -1,4 +1,25 @@
 [
+    "File '/project/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/d/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a' from '/project/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -69,7 +90,7 @@
     "File '/project/d.d.ts' does not exist.",
     "File '/project/d.js' does not exist.",
     "File '/project/d.jsx' does not exist.",
-    "File '/project/d/package.json' does not exist.",
+    "File '/project/d/package.json' does not exist according to earlier cached lookups.",
     "File '/project/d/index.ts' exists - use it as a name resolution result.",
     "======== Module name './d' was successfully resolved to '/project/d/index.ts'. ========",
     "======== Resolving module './d/index' from '/project/main.ts'. ========",
@@ -99,6 +120,8 @@
     "File '/project/e.d.txt.ts' does not exist.",
     "File '/project/e.txt.ts' exists - use it as a name resolution result.",
     "======== Module name './e.txt' was successfully resolved to '/project/e.txt.ts'. ========",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a.ts' from '/project/types.d.ts'. ========",
     "Resolution for module './a.ts' was found in cache from location '/project'.",
     "======== Module name './a.ts' was successfully resolved to '/project/a.ts'. ========",
@@ -109,6 +132,8 @@
     "File name '/project/a.d.ts' has a '.d.ts' extension - stripping it.",
     "File '/project/a.ts' exists - use it as a name resolution result.",
     "======== Module name './a.d.ts' was successfully resolved to '/project/a.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +147,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +162,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -148,6 +177,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -161,6 +192,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -174,6 +207,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -186,5 +221,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=true).trace.json b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=true).trace.json
index 3ae9198b3782d..ac875c75ce478 100644
--- a/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=true).trace.json
+++ b/tests/baselines/reference/bundlerImportTsExtensions(allowimportingtsextensions=true,noemit=true).trace.json
@@ -1,4 +1,25 @@
 [
+    "File '/project/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/d/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a' from '/project/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -69,7 +90,7 @@
     "File '/project/d.d.ts' does not exist.",
     "File '/project/d.js' does not exist.",
     "File '/project/d.jsx' does not exist.",
-    "File '/project/d/package.json' does not exist.",
+    "File '/project/d/package.json' does not exist according to earlier cached lookups.",
     "File '/project/d/index.ts' exists - use it as a name resolution result.",
     "======== Module name './d' was successfully resolved to '/project/d/index.ts'. ========",
     "======== Resolving module './d/index' from '/project/main.ts'. ========",
@@ -99,6 +120,8 @@
     "File '/project/e.d.txt.ts' does not exist.",
     "File '/project/e.txt.ts' exists - use it as a name resolution result.",
     "======== Module name './e.txt' was successfully resolved to '/project/e.txt.ts'. ========",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a.ts' from '/project/types.d.ts'. ========",
     "Resolution for module './a.ts' was found in cache from location '/project'.",
     "======== Module name './a.ts' was successfully resolved to '/project/a.ts'. ========",
@@ -109,6 +132,8 @@
     "File name '/project/a.d.ts' has a '.d.ts' extension - stripping it.",
     "File '/project/a.ts' exists - use it as a name resolution result.",
     "======== Module name './a.d.ts' was successfully resolved to '/project/a.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +147,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +162,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -148,6 +177,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -161,6 +192,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -174,6 +207,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -186,5 +221,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=esnext).errors.txt b/tests/baselines/reference/bundlerNodeModules1(module=esnext).errors.txt
index 69921a8ce1425..b25d226dacf5f 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=esnext).errors.txt
+++ b/tests/baselines/reference/bundlerNodeModules1(module=esnext).errors.txt
@@ -4,7 +4,7 @@ error TS6504: File '/node_modules/dual/index.cjs' is a JavaScript file. Did you
 error TS6504: File '/node_modules/dual/index.js' is a JavaScript file. Did you mean to enable the 'allowJs' option?
   The file is in the program because:
     Root file specified for compilation
-/main.cts(1,15): error TS2305: Module '"dual"' has no exported member 'cjs'.
+/main.cts(1,10): error TS2305: Module '"dual"' has no exported member 'esm'.
 /main.mts(1,15): error TS2305: Module '"dual"' has no exported member 'cjs'.
 /main.ts(1,15): error TS2305: Module '"dual"' has no exported member 'cjs'.
 
@@ -54,6 +54,6 @@ error TS6504: File '/node_modules/dual/index.js' is a JavaScript file. Did you m
     
 ==== /main.cts (1 errors) ====
     import { esm, cjs } from "dual";
-                  ~~~
-!!! error TS2305: Module '"dual"' has no exported member 'cjs'.
+             ~~~
+!!! error TS2305: Module '"dual"' has no exported member 'esm'.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=esnext).js b/tests/baselines/reference/bundlerNodeModules1(module=esnext).js
index 1272b9f38f865..c870e2e452261 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=esnext).js
+++ b/tests/baselines/reference/bundlerNodeModules1(module=esnext).js
@@ -42,4 +42,5 @@ export {};
 //// [main.mjs]
 export {};
 //// [main.cjs]
-export {};
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=esnext).trace.json b/tests/baselines/reference/bundlerNodeModules1(module=esnext).trace.json
index 9976c48b1306d..01c135d3daa22 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=esnext).trace.json
+++ b/tests/baselines/reference/bundlerNodeModules1(module=esnext).trace.json
@@ -1,11 +1,13 @@
 [
+    "Found 'package.json' at '/node_modules/dual/package.json'.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'dual' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'dual' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/dual/package.json'.",
+    "File '/node_modules/dual/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Matched 'exports' condition 'import'.",
     "Using 'exports' subpath '.' with target './index.js'.",
@@ -22,8 +24,25 @@
     "Resolution for module 'dual' was found in cache from location '/'.",
     "======== Module name 'dual' was successfully resolved to '/node_modules/dual/index.d.ts' with Package ID 'dual/index.d.ts@1.0.0'. ========",
     "======== Resolving module 'dual' from '/main.cts'. ========",
-    "Resolution for module 'dual' was found in cache from location '/'.",
-    "======== Module name 'dual' was successfully resolved to '/node_modules/dual/index.d.ts' with Package ID 'dual/index.d.ts@1.0.0'. ========",
+    "Explicitly specified module resolution kind: 'Bundler'.",
+    "Resolving in CJS mode with conditions 'require', 'types'.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "Loading module 'dual' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
+    "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+    "File '/node_modules/dual/package.json' exists according to earlier cached lookups.",
+    "Entering conditional exports.",
+    "Saw non-matching condition 'import'.",
+    "Matched 'exports' condition 'require'.",
+    "Using 'exports' subpath '.' with target './index.cjs'.",
+    "File name '/node_modules/dual/index.cjs' has a '.cjs' extension - stripping it.",
+    "File '/node_modules/dual/index.cts' does not exist.",
+    "File '/node_modules/dual/index.d.cts' exists - use it as a name resolution result.",
+    "Resolved under condition 'require'.",
+    "Exiting conditional exports.",
+    "Resolving real path for '/node_modules/dual/index.d.cts', result '/node_modules/dual/index.d.cts'.",
+    "======== Module name 'dual' was successfully resolved to '/node_modules/dual/index.d.cts' with Package ID 'dual/index.d.cts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +55,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +69,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +83,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +97,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +111,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +124,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=esnext).types b/tests/baselines/reference/bundlerNodeModules1(module=esnext).types
index 2d8967df3849c..a225f0203cc80 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=esnext).types
+++ b/tests/baselines/reference/bundlerNodeModules1(module=esnext).types
@@ -26,8 +26,8 @@ import { esm, cjs } from "dual";
 
 === /main.cts ===
 import { esm, cjs } from "dual";
->esm : number
->    : ^^^^^^
->cjs : any
+>esm : any
 >    : ^^^
+>cjs : number
+>    : ^^^^^^
 
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=preserve).errors.txt b/tests/baselines/reference/bundlerNodeModules1(module=preserve).errors.txt
index 69921a8ce1425..b25d226dacf5f 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=preserve).errors.txt
+++ b/tests/baselines/reference/bundlerNodeModules1(module=preserve).errors.txt
@@ -4,7 +4,7 @@ error TS6504: File '/node_modules/dual/index.cjs' is a JavaScript file. Did you
 error TS6504: File '/node_modules/dual/index.js' is a JavaScript file. Did you mean to enable the 'allowJs' option?
   The file is in the program because:
     Root file specified for compilation
-/main.cts(1,15): error TS2305: Module '"dual"' has no exported member 'cjs'.
+/main.cts(1,10): error TS2305: Module '"dual"' has no exported member 'esm'.
 /main.mts(1,15): error TS2305: Module '"dual"' has no exported member 'cjs'.
 /main.ts(1,15): error TS2305: Module '"dual"' has no exported member 'cjs'.
 
@@ -54,6 +54,6 @@ error TS6504: File '/node_modules/dual/index.js' is a JavaScript file. Did you m
     
 ==== /main.cts (1 errors) ====
     import { esm, cjs } from "dual";
-                  ~~~
-!!! error TS2305: Module '"dual"' has no exported member 'cjs'.
+             ~~~
+!!! error TS2305: Module '"dual"' has no exported member 'esm'.
     
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=preserve).trace.json b/tests/baselines/reference/bundlerNodeModules1(module=preserve).trace.json
index 9976c48b1306d..01c135d3daa22 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=preserve).trace.json
+++ b/tests/baselines/reference/bundlerNodeModules1(module=preserve).trace.json
@@ -1,11 +1,13 @@
 [
+    "Found 'package.json' at '/node_modules/dual/package.json'.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'dual' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'dual' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/dual/package.json'.",
+    "File '/node_modules/dual/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Matched 'exports' condition 'import'.",
     "Using 'exports' subpath '.' with target './index.js'.",
@@ -22,8 +24,25 @@
     "Resolution for module 'dual' was found in cache from location '/'.",
     "======== Module name 'dual' was successfully resolved to '/node_modules/dual/index.d.ts' with Package ID 'dual/index.d.ts@1.0.0'. ========",
     "======== Resolving module 'dual' from '/main.cts'. ========",
-    "Resolution for module 'dual' was found in cache from location '/'.",
-    "======== Module name 'dual' was successfully resolved to '/node_modules/dual/index.d.ts' with Package ID 'dual/index.d.ts@1.0.0'. ========",
+    "Explicitly specified module resolution kind: 'Bundler'.",
+    "Resolving in CJS mode with conditions 'require', 'types'.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "Loading module 'dual' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
+    "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+    "File '/node_modules/dual/package.json' exists according to earlier cached lookups.",
+    "Entering conditional exports.",
+    "Saw non-matching condition 'import'.",
+    "Matched 'exports' condition 'require'.",
+    "Using 'exports' subpath '.' with target './index.cjs'.",
+    "File name '/node_modules/dual/index.cjs' has a '.cjs' extension - stripping it.",
+    "File '/node_modules/dual/index.cts' does not exist.",
+    "File '/node_modules/dual/index.d.cts' exists - use it as a name resolution result.",
+    "Resolved under condition 'require'.",
+    "Exiting conditional exports.",
+    "Resolving real path for '/node_modules/dual/index.d.cts', result '/node_modules/dual/index.d.cts'.",
+    "======== Module name 'dual' was successfully resolved to '/node_modules/dual/index.d.cts' with Package ID 'dual/index.d.cts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +55,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +69,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +83,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +97,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +111,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +124,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerNodeModules1(module=preserve).types b/tests/baselines/reference/bundlerNodeModules1(module=preserve).types
index 2d8967df3849c..a225f0203cc80 100644
--- a/tests/baselines/reference/bundlerNodeModules1(module=preserve).types
+++ b/tests/baselines/reference/bundlerNodeModules1(module=preserve).types
@@ -26,8 +26,8 @@ import { esm, cjs } from "dual";
 
 === /main.cts ===
 import { esm, cjs } from "dual";
->esm : number
->    : ^^^^^^
->cjs : any
+>esm : any
 >    : ^^^
+>cjs : number
+>    : ^^^^^^
 
diff --git a/tests/baselines/reference/bundlerRelative1(module=esnext).trace.json b/tests/baselines/reference/bundlerRelative1(module=esnext).trace.json
index 7cc32c65d7ea1..32e88ac669665 100644
--- a/tests/baselines/reference/bundlerRelative1(module=esnext).trace.json
+++ b/tests/baselines/reference/bundlerRelative1(module=esnext).trace.json
@@ -1,4 +1,13 @@
 [
+    "File '/dir/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/foo/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './dir' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -8,7 +17,7 @@
     "File '/dir.d.ts' does not exist.",
     "File '/dir.js' does not exist.",
     "File '/dir.jsx' does not exist.",
-    "File '/dir/package.json' does not exist.",
+    "File '/dir/package.json' does not exist according to earlier cached lookups.",
     "File '/dir/index.ts' exists - use it as a name resolution result.",
     "======== Module name './dir' was successfully resolved to '/dir/index.ts'. ========",
     "======== Resolving module './dir/index' from '/main.ts'. ========",
@@ -80,6 +89,8 @@
     "File '/types/cjs.tsx' does not exist.",
     "File '/types/cjs.d.ts' exists - use it as a name resolution result.",
     "======== Module name './types/cjs' was successfully resolved to '/types/cjs.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +104,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,6 +119,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,6 +134,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -132,6 +149,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -145,6 +164,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -157,5 +178,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/bundlerRelative1(module=preserve).trace.json b/tests/baselines/reference/bundlerRelative1(module=preserve).trace.json
index 7cc32c65d7ea1..32e88ac669665 100644
--- a/tests/baselines/reference/bundlerRelative1(module=preserve).trace.json
+++ b/tests/baselines/reference/bundlerRelative1(module=preserve).trace.json
@@ -1,4 +1,13 @@
 [
+    "File '/dir/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/foo/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './dir' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
@@ -8,7 +17,7 @@
     "File '/dir.d.ts' does not exist.",
     "File '/dir.js' does not exist.",
     "File '/dir.jsx' does not exist.",
-    "File '/dir/package.json' does not exist.",
+    "File '/dir/package.json' does not exist according to earlier cached lookups.",
     "File '/dir/index.ts' exists - use it as a name resolution result.",
     "======== Module name './dir' was successfully resolved to '/dir/index.ts'. ========",
     "======== Resolving module './dir/index' from '/main.ts'. ========",
@@ -80,6 +89,8 @@
     "File '/types/cjs.tsx' does not exist.",
     "File '/types/cjs.d.ts' exists - use it as a name resolution result.",
     "======== Module name './types/cjs' was successfully resolved to '/types/cjs.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +104,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,6 +119,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,6 +134,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -132,6 +149,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -145,6 +164,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -157,5 +178,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cacheResolutions.trace.json b/tests/baselines/reference/cacheResolutions.trace.json
index 3223d232e2b3f..b21bd7a2d6b67 100644
--- a/tests/baselines/reference/cacheResolutions.trace.json
+++ b/tests/baselines/reference/cacheResolutions.trace.json
@@ -1,4 +1,8 @@
 [
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'tslib' from '/a/b/c/app.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "File '/a/b/c/tslib.ts' does not exist.",
@@ -27,12 +31,22 @@
     "File '/tslib.js' does not exist.",
     "File '/tslib.jsx' does not exist.",
     "======== Module name 'tslib' was not resolved. ========",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'tslib' from '/a/b/c/lib1.ts'. ========",
     "Resolution for module 'tslib' was found in cache from location '/a/b/c'.",
     "======== Module name 'tslib' was not resolved. ========",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'tslib' from '/a/b/c/lib2.ts'. ========",
     "Resolution for module 'tslib' was found in cache from location '/a/b/c'.",
     "======== Module name 'tslib' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +60,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +75,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +90,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +105,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +120,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,5 +134,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution1.trace.json b/tests/baselines/reference/cachedModuleResolution1.trace.json
index e0abb568e03c2..4b74ccac8565f 100644
--- a/tests/baselines/reference/cachedModuleResolution1.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution1.trace.json
@@ -1,4 +1,14 @@
 [
+    "File '/a/b/node_modules/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -11,12 +21,18 @@
     "File '/a/b/node_modules/foo.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/b/node_modules/foo.d.ts', result '/a/b/node_modules/foo.d.ts'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/node_modules/foo.d.ts'. ========",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/node_modules/foo.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +46,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +61,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +91,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +106,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,5 +120,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution2.trace.json b/tests/baselines/reference/cachedModuleResolution2.trace.json
index af31f721e8747..8b98f408af75a 100644
--- a/tests/baselines/reference/cachedModuleResolution2.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution2.trace.json
@@ -1,4 +1,12 @@
 [
+    "File '/a/b/node_modules/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -9,6 +17,12 @@
     "File '/a/b/node_modules/foo.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/b/node_modules/foo.d.ts', result '/a/b/node_modules/foo.d.ts'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/node_modules/foo.d.ts'. ========",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -17,6 +31,8 @@
     "Directory '/a/b/c/d/node_modules' does not exist, skipping all lookups in it.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/node_modules/foo.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +46,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +61,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +91,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +106,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,5 +120,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution3.trace.json b/tests/baselines/reference/cachedModuleResolution3.trace.json
index 2d47c539debd3..0cbbc3010d528 100644
--- a/tests/baselines/reference/cachedModuleResolution3.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution3.trace.json
@@ -1,4 +1,13 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File '/a/b/c/d/e/foo.ts' does not exist.",
@@ -14,10 +23,16 @@
     "File '/a/b/foo.tsx' does not exist.",
     "File '/a/b/foo.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'foo' was successfully resolved to '/a/b/foo.d.ts'. ========",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/foo.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +46,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +61,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +91,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +106,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +120,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution4.trace.json b/tests/baselines/reference/cachedModuleResolution4.trace.json
index 6880a4175b515..b76ed12bb5b23 100644
--- a/tests/baselines/reference/cachedModuleResolution4.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution4.trace.json
@@ -1,4 +1,11 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File '/a/b/c/foo.ts' does not exist.",
@@ -8,6 +15,12 @@
     "File '/a/b/foo.tsx' does not exist.",
     "File '/a/b/foo.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'foo' was successfully resolved to '/a/b/foo.d.ts'. ========",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File '/a/b/c/d/e/foo.ts' does not exist.",
@@ -18,6 +31,8 @@
     "File '/a/b/c/d/foo.d.ts' does not exist.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/foo.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +46,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +61,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +91,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +106,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +120,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution5.trace.json b/tests/baselines/reference/cachedModuleResolution5.trace.json
index 897fc3aa4c3ad..de14291c11773 100644
--- a/tests/baselines/reference/cachedModuleResolution5.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution5.trace.json
@@ -1,4 +1,14 @@
 [
+    "File '/a/b/node_modules/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -11,12 +21,17 @@
     "File '/a/b/node_modules/foo.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/b/node_modules/foo.d.ts', result '/a/b/node_modules/foo.d.ts'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/node_modules/foo.d.ts'. ========",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Resolution for module 'foo' was found in cache from location '/a/b'.",
     "======== Module name 'foo' was successfully resolved to '/a/b/node_modules/foo.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +45,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +60,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +75,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +90,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +105,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,5 +119,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution6.trace.json b/tests/baselines/reference/cachedModuleResolution6.trace.json
index 4c07ac4bd05b1..11abe338c747b 100644
--- a/tests/baselines/reference/cachedModuleResolution6.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution6.trace.json
@@ -1,4 +1,10 @@
 [
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -18,12 +24,18 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +49,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +64,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +79,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,6 +94,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +109,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -101,5 +123,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution7.trace.json b/tests/baselines/reference/cachedModuleResolution7.trace.json
index f116d34c6905a..8778558fb9361 100644
--- a/tests/baselines/reference/cachedModuleResolution7.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution7.trace.json
@@ -1,4 +1,8 @@
 [
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +18,12 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +32,8 @@
     "Directory '/a/b/c/d/node_modules' does not exist, skipping all lookups in it.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -35,6 +47,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +62,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +77,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +92,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +107,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -99,5 +121,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution8.trace.json b/tests/baselines/reference/cachedModuleResolution8.trace.json
index b74e44890d3ee..5743a15f4f37a 100644
--- a/tests/baselines/reference/cachedModuleResolution8.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution8.trace.json
@@ -1,4 +1,10 @@
 [
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File '/a/b/c/d/e/foo.ts' does not exist.",
@@ -39,10 +45,16 @@
     "File '/foo.js' does not exist.",
     "File '/foo.jsx' does not exist.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +68,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +83,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +98,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,6 +113,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +128,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -120,5 +142,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/cachedModuleResolution9.trace.json b/tests/baselines/reference/cachedModuleResolution9.trace.json
index b0daccb405fe1..5da05b8608ab7 100644
--- a/tests/baselines/reference/cachedModuleResolution9.trace.json
+++ b/tests/baselines/reference/cachedModuleResolution9.trace.json
@@ -1,4 +1,8 @@
 [
+    "File '/a/b/c/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a/b/c/lib.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File '/a/b/c/foo.ts' does not exist.",
@@ -27,6 +31,12 @@
     "File '/foo.js' does not exist.",
     "File '/foo.jsx' does not exist.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/a/b/c/d/e/package.json' does not exist.",
+    "File '/a/b/c/d/package.json' does not exist.",
+    "File '/a/b/c/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a/b/c/d/e/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File '/a/b/c/d/e/foo.ts' does not exist.",
@@ -37,6 +47,8 @@
     "File '/a/b/c/d/foo.d.ts' does not exist.",
     "Resolution for module 'foo' was found in cache from location '/a/b/c'.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +62,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +77,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,6 +92,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +107,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -102,6 +122,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -114,5 +136,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).errors.txt b/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).errors.txt
deleted file mode 100644
index e66a5c3ddddfc..0000000000000
--- a/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).errors.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
-
-
-!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
-==== /node_modules/dep/package.json (0 errors) ====
-    {
-      "name": "dep",
-      "version": "1.0.0",
-      "exports": {
-        ".": {
-            "import": "./dist/index.mjs",
-            "require": "./dist/index.js",
-            "types": "./dist/index.d.ts",
-        }
-      }
-    }
-    
-==== /node_modules/dep/dist/index.d.ts (0 errors) ====
-    export {};
-    
-==== /node_modules/dep/dist/index.mjs (0 errors) ====
-    export {};
-    
-==== /index.mts (0 errors) ====
-    import {} from "dep";
-    // Should be an untyped resolution to dep/dist/index.mjs,
-    // but the first search is only for TS files, and when
-    // there's no dist/index.d.mts, it continues looking for
-    // matching conditions and resolves via `types`.
\ No newline at end of file
diff --git a/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).trace.json b/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).trace.json
index 5cf2ce2ba8146..55ee28df7585b 100644
--- a/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).trace.json
+++ b/tests/baselines/reference/conditionalExportsResolutionFallback(moduleresolution=bundler).trace.json
@@ -1,11 +1,13 @@
 [
+    "File '/node_modules/dep/dist/package.json' does not exist.",
+    "Found 'package.json' at '/node_modules/dep/package.json'.",
     "======== Resolving module 'dep' from '/index.mts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
     "File '/package.json' does not exist.",
     "Loading module 'dep' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/dep/package.json'.",
+    "File '/node_modules/dep/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Matched 'exports' condition 'import'.",
     "Using 'exports' subpath '.' with target './dist/index.mjs'.",
@@ -22,6 +24,8 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/dep/dist/index.d.ts', result '/node_modules/dep/dist/index.d.ts'.",
     "======== Module name 'dep' was successfully resolved to '/node_modules/dep/dist/index.d.ts' with Package ID 'dep/dist/index.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +38,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +66,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +80,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +94,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,5 +107,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).errors.txt b/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).errors.txt
deleted file mode 100644
index 9e462a35eaf70..0000000000000
--- a/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).errors.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
-
-
-!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
-==== /node_modules/lodash/package.json (0 errors) ====
-    {
-        "name": "lodash",
-        "version": "1.0.0",
-        "main": "index.js",
-        "exports": {
-            "browser": "./browser.js",
-            "webpack": "./webpack.js",
-            "default": "./index.js"
-        }
-    }
-    
-==== /node_modules/lodash/index.d.ts (0 errors) ====
-    declare const _: "index";
-    export = _;
-    
-==== /node_modules/lodash/browser.d.ts (0 errors) ====
-    declare const _: "browser";
-    export default _;
-    
-==== /node_modules/lodash/webpack.d.ts (0 errors) ====
-    declare const _: "webpack";
-    export = _;
-    
-==== /index.ts (0 errors) ====
-    import _ from "lodash";
-    
\ No newline at end of file
diff --git a/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).js b/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).js
index 1ac29a4a032d3..2d484ff74b5d3 100644
--- a/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).js
+++ b/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).js
@@ -29,5 +29,3 @@ import _ from "lodash";
 
 
 //// [index.js]
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).trace.json b/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).trace.json
index 92c6aa7e03569..4d59437af6054 100644
--- a/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).trace.json
+++ b/tests/baselines/reference/customConditions(resolvepackagejsonexports=false).trace.json
@@ -1,11 +1,15 @@
 [
+    "Found 'package.json' at '/node_modules/lodash/package.json'.",
+    "File '/node_modules/lodash/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/lodash/package.json' exists according to earlier cached lookups.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'lodash' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types', 'webpack', ' browser'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'lodash' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/lodash/package.json'.",
+    "File '/node_modules/lodash/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/lodash.ts' does not exist.",
     "File '/node_modules/lodash.tsx' does not exist.",
     "File '/node_modules/lodash.d.ts' does not exist.",
@@ -20,6 +24,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/node_modules/lodash/index.d.ts', result '/node_modules/lodash/index.d.ts'.",
     "======== Module name 'lodash' was successfully resolved to '/node_modules/lodash/index.d.ts' with Package ID 'lodash/index.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +38,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +66,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +80,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,6 +94,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -91,5 +107,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).errors.txt b/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).errors.txt
deleted file mode 100644
index 9e462a35eaf70..0000000000000
--- a/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).errors.txt
+++ /dev/null
@@ -1,31 +0,0 @@
-error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
-
-
-!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
-==== /node_modules/lodash/package.json (0 errors) ====
-    {
-        "name": "lodash",
-        "version": "1.0.0",
-        "main": "index.js",
-        "exports": {
-            "browser": "./browser.js",
-            "webpack": "./webpack.js",
-            "default": "./index.js"
-        }
-    }
-    
-==== /node_modules/lodash/index.d.ts (0 errors) ====
-    declare const _: "index";
-    export = _;
-    
-==== /node_modules/lodash/browser.d.ts (0 errors) ====
-    declare const _: "browser";
-    export default _;
-    
-==== /node_modules/lodash/webpack.d.ts (0 errors) ====
-    declare const _: "webpack";
-    export = _;
-    
-==== /index.ts (0 errors) ====
-    import _ from "lodash";
-    
\ No newline at end of file
diff --git a/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).js b/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).js
index 1ac29a4a032d3..2d484ff74b5d3 100644
--- a/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).js
+++ b/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).js
@@ -29,5 +29,3 @@ import _ from "lodash";
 
 
 //// [index.js]
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).trace.json b/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).trace.json
index c91e61256b116..564ee9b6816c2 100644
--- a/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).trace.json
+++ b/tests/baselines/reference/customConditions(resolvepackagejsonexports=true).trace.json
@@ -1,11 +1,15 @@
 [
+    "Found 'package.json' at '/node_modules/lodash/package.json'.",
+    "File '/node_modules/lodash/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/lodash/package.json' exists according to earlier cached lookups.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'lodash' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types', 'webpack', ' browser'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'lodash' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/lodash/package.json'.",
+    "File '/node_modules/lodash/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Saw non-matching condition 'browser'.",
     "Matched 'exports' condition 'webpack'.",
@@ -19,6 +23,8 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/lodash/webpack.d.ts', result '/node_modules/lodash/webpack.d.ts'.",
     "======== Module name 'lodash' was successfully resolved to '/node_modules/lodash/webpack.d.ts' with Package ID 'lodash/webpack.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +51,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +65,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +79,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +93,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,5 +106,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage.trace.json b/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage.trace.json
index 557fda775e656..eae79e8301031 100644
--- a/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage.trace.json
+++ b/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/use' from '/index.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo/use' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +25,7 @@
     "File '/node_modules/a/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/a/index.d.ts', result '/node_modules/a/index.d.ts'.",
     "======== Module name 'a' was successfully resolved to '/node_modules/a/index.d.ts'. ========",
+    "File '/node_modules/foo/package.json' exists according to earlier cached lookups.",
     "======== Resolving module './index' from '/node_modules/foo/use.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/node_modules/foo/index', target file types: TypeScript, Declaration.",
@@ -32,6 +34,10 @@
     "File '/node_modules/foo/index.d.ts' exists - use it as a name resolution result.",
     "File '/node_modules/foo/package.json' exists according to earlier cached lookups.",
     "======== Module name './index' was successfully resolved to '/node_modules/foo/index.d.ts' with Package ID 'foo/index.d.ts@1.2.3'. ========",
+    "File '/node_modules/foo/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/node_modules/a/index.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +56,9 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/node_modules/a/node_modules/foo/index.d.ts', result '/node_modules/a/node_modules/foo/index.d.ts'.",
     "======== Module name 'foo' was successfully resolved to '/node_modules/a/node_modules/foo/index.d.ts' with Package ID 'foo/index.d.ts@1.2.3'. ========",
+    "File '/node_modules/a/node_modules/foo/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,6 +99,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +113,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,6 +127,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -121,5 +140,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage_scoped.trace.json b/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage_scoped.trace.json
index 98916c4ce30a4..19793828d306b 100644
--- a/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage_scoped.trace.json
+++ b/tests/baselines/reference/duplicatePackage_relativeImportWithinPackage_scoped.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module '@foo/bar/use' from '/index.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module '@foo/bar/use' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +25,7 @@
     "File '/node_modules/a/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/a/index.d.ts', result '/node_modules/a/index.d.ts'.",
     "======== Module name 'a' was successfully resolved to '/node_modules/a/index.d.ts'. ========",
+    "File '/node_modules/@foo/bar/package.json' exists according to earlier cached lookups.",
     "======== Resolving module './index' from '/node_modules/@foo/bar/use.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/node_modules/@foo/bar/index', target file types: TypeScript, Declaration.",
@@ -32,6 +34,10 @@
     "File '/node_modules/@foo/bar/index.d.ts' exists - use it as a name resolution result.",
     "File '/node_modules/@foo/bar/package.json' exists according to earlier cached lookups.",
     "======== Module name './index' was successfully resolved to '/node_modules/@foo/bar/index.d.ts' with Package ID '@foo/bar/index.d.ts@1.2.3'. ========",
+    "File '/node_modules/@foo/bar/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@foo/bar' from '/node_modules/a/index.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module '@foo/bar' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +56,9 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/node_modules/a/node_modules/@foo/bar/index.d.ts', result '/node_modules/a/node_modules/@foo/bar/index.d.ts'.",
     "======== Module name '@foo/bar' was successfully resolved to '/node_modules/a/node_modules/@foo/bar/index.d.ts' with Package ID '@foo/bar/index.d.ts@1.2.3'. ========",
+    "File '/node_modules/a/node_modules/@foo/bar/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,6 +99,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +113,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,6 +127,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -121,5 +140,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).errors.txt b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).errors.txt
new file mode 100644
index 0000000000000..1c86c3703f83a
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).errors.txt
@@ -0,0 +1,23 @@
+/index.ts(1,8): error TS1192: Module '"/node_modules/mdast-util-to-string/index"' has no default export.
+/index.ts(7,8): error TS2339: Property 'default' does not exist on type 'typeof import("/node_modules/mdast-util-to-string/index")'.
+
+
+==== /node_modules/mdast-util-to-string/package.json (0 errors) ====
+    { "type": "module" }
+    
+==== /node_modules/mdast-util-to-string/index.d.ts (0 errors) ====
+    export function toString(): string;
+    
+==== /index.ts (2 errors) ====
+    import mdast, { toString } from 'mdast-util-to-string';
+           ~~~~~
+!!! error TS1192: Module '"/node_modules/mdast-util-to-string/index"' has no default export.
+    mdast;
+    mdast.toString();
+    
+    const mdast2 = await import('mdast-util-to-string');
+    mdast2.toString();
+    mdast2.default;
+           ~~~~~~~
+!!! error TS2339: Property 'default' does not exist on type 'typeof import("/node_modules/mdast-util-to-string/index")'.
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).js b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).js
new file mode 100644
index 0000000000000..0c1812fa06439
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).js
@@ -0,0 +1,25 @@
+//// [tests/cases/compiler/esmNoSynthesizedDefault.ts] ////
+
+//// [package.json]
+{ "type": "module" }
+
+//// [index.d.ts]
+export function toString(): string;
+
+//// [index.ts]
+import mdast, { toString } from 'mdast-util-to-string';
+mdast;
+mdast.toString();
+
+const mdast2 = await import('mdast-util-to-string');
+mdast2.toString();
+mdast2.default;
+
+
+//// [index.js]
+import mdast from 'mdast-util-to-string';
+mdast;
+mdast.toString();
+const mdast2 = await import('mdast-util-to-string');
+mdast2.toString();
+mdast2.default;
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).symbols b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).symbols
new file mode 100644
index 0000000000000..a9c981cfa7cd5
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).symbols
@@ -0,0 +1,29 @@
+//// [tests/cases/compiler/esmNoSynthesizedDefault.ts] ////
+
+=== /node_modules/mdast-util-to-string/index.d.ts ===
+export function toString(): string;
+>toString : Symbol(toString, Decl(index.d.ts, 0, 0))
+
+=== /index.ts ===
+import mdast, { toString } from 'mdast-util-to-string';
+>mdast : Symbol(mdast, Decl(index.ts, 0, 6))
+>toString : Symbol(toString, Decl(index.ts, 0, 15))
+
+mdast;
+>mdast : Symbol(mdast, Decl(index.ts, 0, 6))
+
+mdast.toString();
+>mdast : Symbol(mdast, Decl(index.ts, 0, 6))
+
+const mdast2 = await import('mdast-util-to-string');
+>mdast2 : Symbol(mdast2, Decl(index.ts, 4, 5))
+>'mdast-util-to-string' : Symbol("/node_modules/mdast-util-to-string/index", Decl(index.d.ts, 0, 0))
+
+mdast2.toString();
+>mdast2.toString : Symbol(toString, Decl(index.d.ts, 0, 0))
+>mdast2 : Symbol(mdast2, Decl(index.ts, 4, 5))
+>toString : Symbol(toString, Decl(index.d.ts, 0, 0))
+
+mdast2.default;
+>mdast2 : Symbol(mdast2, Decl(index.ts, 4, 5))
+
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).types b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).types
new file mode 100644
index 0000000000000..9056234732603
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=esnext).types
@@ -0,0 +1,56 @@
+//// [tests/cases/compiler/esmNoSynthesizedDefault.ts] ////
+
+=== /node_modules/mdast-util-to-string/index.d.ts ===
+export function toString(): string;
+>toString : () => string
+>         : ^^^^^^      
+
+=== /index.ts ===
+import mdast, { toString } from 'mdast-util-to-string';
+>mdast : any
+>      : ^^^
+>toString : () => string
+>         : ^^^^^^^^^^^^
+
+mdast;
+>mdast : any
+>      : ^^^
+
+mdast.toString();
+>mdast.toString() : any
+>                 : ^^^
+>mdast.toString : any
+>               : ^^^
+>mdast : any
+>      : ^^^
+>toString : any
+>         : ^^^
+
+const mdast2 = await import('mdast-util-to-string');
+>mdast2 : typeof import("/node_modules/mdast-util-to-string/index")
+>       : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>await import('mdast-util-to-string') : typeof import("/node_modules/mdast-util-to-string/index")
+>                                     : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>import('mdast-util-to-string') : Promise<typeof import("/node_modules/mdast-util-to-string/index")>
+>                               : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>'mdast-util-to-string' : "mdast-util-to-string"
+>                       : ^^^^^^^^^^^^^^^^^^^^^^
+
+mdast2.toString();
+>mdast2.toString() : string
+>                  : ^^^^^^
+>mdast2.toString : () => string
+>                : ^^^^^^^^^^^^
+>mdast2 : typeof import("/node_modules/mdast-util-to-string/index")
+>       : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>toString : () => string
+>         : ^^^^^^^^^^^^
+
+mdast2.default;
+>mdast2.default : any
+>               : ^^^
+>mdast2 : typeof import("/node_modules/mdast-util-to-string/index")
+>       : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>default : any
+>        : ^^^
+
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).errors.txt b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).errors.txt
new file mode 100644
index 0000000000000..1c86c3703f83a
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).errors.txt
@@ -0,0 +1,23 @@
+/index.ts(1,8): error TS1192: Module '"/node_modules/mdast-util-to-string/index"' has no default export.
+/index.ts(7,8): error TS2339: Property 'default' does not exist on type 'typeof import("/node_modules/mdast-util-to-string/index")'.
+
+
+==== /node_modules/mdast-util-to-string/package.json (0 errors) ====
+    { "type": "module" }
+    
+==== /node_modules/mdast-util-to-string/index.d.ts (0 errors) ====
+    export function toString(): string;
+    
+==== /index.ts (2 errors) ====
+    import mdast, { toString } from 'mdast-util-to-string';
+           ~~~~~
+!!! error TS1192: Module '"/node_modules/mdast-util-to-string/index"' has no default export.
+    mdast;
+    mdast.toString();
+    
+    const mdast2 = await import('mdast-util-to-string');
+    mdast2.toString();
+    mdast2.default;
+           ~~~~~~~
+!!! error TS2339: Property 'default' does not exist on type 'typeof import("/node_modules/mdast-util-to-string/index")'.
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).js b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).js
new file mode 100644
index 0000000000000..0c1812fa06439
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).js
@@ -0,0 +1,25 @@
+//// [tests/cases/compiler/esmNoSynthesizedDefault.ts] ////
+
+//// [package.json]
+{ "type": "module" }
+
+//// [index.d.ts]
+export function toString(): string;
+
+//// [index.ts]
+import mdast, { toString } from 'mdast-util-to-string';
+mdast;
+mdast.toString();
+
+const mdast2 = await import('mdast-util-to-string');
+mdast2.toString();
+mdast2.default;
+
+
+//// [index.js]
+import mdast from 'mdast-util-to-string';
+mdast;
+mdast.toString();
+const mdast2 = await import('mdast-util-to-string');
+mdast2.toString();
+mdast2.default;
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).symbols b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).symbols
new file mode 100644
index 0000000000000..a9c981cfa7cd5
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).symbols
@@ -0,0 +1,29 @@
+//// [tests/cases/compiler/esmNoSynthesizedDefault.ts] ////
+
+=== /node_modules/mdast-util-to-string/index.d.ts ===
+export function toString(): string;
+>toString : Symbol(toString, Decl(index.d.ts, 0, 0))
+
+=== /index.ts ===
+import mdast, { toString } from 'mdast-util-to-string';
+>mdast : Symbol(mdast, Decl(index.ts, 0, 6))
+>toString : Symbol(toString, Decl(index.ts, 0, 15))
+
+mdast;
+>mdast : Symbol(mdast, Decl(index.ts, 0, 6))
+
+mdast.toString();
+>mdast : Symbol(mdast, Decl(index.ts, 0, 6))
+
+const mdast2 = await import('mdast-util-to-string');
+>mdast2 : Symbol(mdast2, Decl(index.ts, 4, 5))
+>'mdast-util-to-string' : Symbol("/node_modules/mdast-util-to-string/index", Decl(index.d.ts, 0, 0))
+
+mdast2.toString();
+>mdast2.toString : Symbol(toString, Decl(index.d.ts, 0, 0))
+>mdast2 : Symbol(mdast2, Decl(index.ts, 4, 5))
+>toString : Symbol(toString, Decl(index.d.ts, 0, 0))
+
+mdast2.default;
+>mdast2 : Symbol(mdast2, Decl(index.ts, 4, 5))
+
diff --git a/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).types b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).types
new file mode 100644
index 0000000000000..9056234732603
--- /dev/null
+++ b/tests/baselines/reference/esmNoSynthesizedDefault(module=preserve).types
@@ -0,0 +1,56 @@
+//// [tests/cases/compiler/esmNoSynthesizedDefault.ts] ////
+
+=== /node_modules/mdast-util-to-string/index.d.ts ===
+export function toString(): string;
+>toString : () => string
+>         : ^^^^^^      
+
+=== /index.ts ===
+import mdast, { toString } from 'mdast-util-to-string';
+>mdast : any
+>      : ^^^
+>toString : () => string
+>         : ^^^^^^^^^^^^
+
+mdast;
+>mdast : any
+>      : ^^^
+
+mdast.toString();
+>mdast.toString() : any
+>                 : ^^^
+>mdast.toString : any
+>               : ^^^
+>mdast : any
+>      : ^^^
+>toString : any
+>         : ^^^
+
+const mdast2 = await import('mdast-util-to-string');
+>mdast2 : typeof import("/node_modules/mdast-util-to-string/index")
+>       : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>await import('mdast-util-to-string') : typeof import("/node_modules/mdast-util-to-string/index")
+>                                     : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>import('mdast-util-to-string') : Promise<typeof import("/node_modules/mdast-util-to-string/index")>
+>                               : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>'mdast-util-to-string' : "mdast-util-to-string"
+>                       : ^^^^^^^^^^^^^^^^^^^^^^
+
+mdast2.toString();
+>mdast2.toString() : string
+>                  : ^^^^^^
+>mdast2.toString : () => string
+>                : ^^^^^^^^^^^^
+>mdast2 : typeof import("/node_modules/mdast-util-to-string/index")
+>       : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>toString : () => string
+>         : ^^^^^^^^^^^^
+
+mdast2.default;
+>mdast2.default : any
+>               : ^^^
+>mdast2 : typeof import("/node_modules/mdast-util-to-string/index")
+>       : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>default : any
+>        : ^^^
+
diff --git a/tests/baselines/reference/globalAugmentationModuleResolution.trace.json b/tests/baselines/reference/globalAugmentationModuleResolution.trace.json
index 9092829302e64..e85c20b4bfde2 100644
--- a/tests/baselines/reference/globalAugmentationModuleResolution.trace.json
+++ b/tests/baselines/reference/globalAugmentationModuleResolution.trace.json
@@ -1,4 +1,8 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +16,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +31,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +46,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +61,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,5 +90,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=amd).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit1(module=amd).errors.txt
new file mode 100644
index 0000000000000..b837dc175ce01
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=amd).errors.txt
@@ -0,0 +1,37 @@
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=amd).js b/tests/baselines/reference/impliedNodeFormatEmit1(module=amd).js
new file mode 100644
index 0000000000000..8cdc5ac2b5358
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=amd).js
@@ -0,0 +1,98 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit1.ts] ////
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [b.mjs]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [c.cjs]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [d.js]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [e.mjs]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [f.mjs]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [g.js]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
+//// [h.mjs]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
+//// [i.cjs]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
+//// [dummy.js]
+define(["require", "exports"], function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=commonjs).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit1(module=commonjs).errors.txt
new file mode 100644
index 0000000000000..b837dc175ce01
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=commonjs).errors.txt
@@ -0,0 +1,37 @@
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=commonjs).js b/tests/baselines/reference/impliedNodeFormatEmit1(module=commonjs).js
new file mode 100644
index 0000000000000..0b19d2dc41f55
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=commonjs).js
@@ -0,0 +1,68 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit1.ts] ////
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=esnext).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit1(module=esnext).errors.txt
new file mode 100644
index 0000000000000..08c39ac0e9b36
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=esnext).errors.txt
@@ -0,0 +1,44 @@
+/g.ts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/h.mts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/i.cts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+
+
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /h.mts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /i.cts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=esnext).js b/tests/baselines/reference/impliedNodeFormatEmit1(module=esnext).js
new file mode 100644
index 0000000000000..d27ae7c8e185c
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=esnext).js
@@ -0,0 +1,60 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit1.ts] ////
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+export {};
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+export {};
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=preserve).js b/tests/baselines/reference/impliedNodeFormatEmit1(module=preserve).js
new file mode 100644
index 0000000000000..067de7888d3e7
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=preserve).js
@@ -0,0 +1,52 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit1.ts] ////
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+export var _ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+//// [h.mjs]
+//// [i.cjs]
+//// [dummy.js]
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=system).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit1(module=system).errors.txt
new file mode 100644
index 0000000000000..0482da58d7b5d
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=system).errors.txt
@@ -0,0 +1,39 @@
+error TS5071: Option '--resolveJsonModule' cannot be specified when 'module' is set to 'none', 'system', or 'umd'.
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5071: Option '--resolveJsonModule' cannot be specified when 'module' is set to 'none', 'system', or 'umd'.
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=system).js b/tests/baselines/reference/impliedNodeFormatEmit1(module=system).js
new file mode 100644
index 0000000000000..f991a4eac017d
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=system).js
@@ -0,0 +1,148 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit1.ts] ////
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var _;
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+            exports_1("_", _ = 0);
+        }
+    };
+});
+//// [b.mjs]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var _;
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+            exports_1("_", _ = 0);
+        }
+    };
+});
+//// [c.cjs]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var _;
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+            exports_1("_", _ = 0);
+        }
+    };
+});
+//// [d.js]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var _;
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+            exports_1("_", _ = 0);
+        }
+    };
+});
+//// [e.mjs]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var _;
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+            exports_1("_", _ = 0);
+        }
+    };
+});
+//// [f.mjs]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var _;
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+            exports_1("_", _ = 0);
+        }
+    };
+});
+//// [g.js]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//// [h.mjs]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//// [i.cjs]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
+//// [dummy.js]
+System.register([], function (exports_1, context_1) {
+    "use strict";
+    var __moduleName = context_1 && context_1.id;
+    return {
+        setters: [],
+        execute: function () {
+        }
+    };
+});
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=umd).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit1(module=umd).errors.txt
new file mode 100644
index 0000000000000..0482da58d7b5d
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=umd).errors.txt
@@ -0,0 +1,39 @@
+error TS5071: Option '--resolveJsonModule' cannot be specified when 'module' is set to 'none', 'system', or 'umd'.
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5071: Option '--resolveJsonModule' cannot be specified when 'module' is set to 'none', 'system', or 'umd'.
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit1(module=umd).js b/tests/baselines/reference/impliedNodeFormatEmit1(module=umd).js
new file mode 100644
index 0000000000000..9fff0d4cd16d4
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit1(module=umd).js
@@ -0,0 +1,178 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit1.ts] ////
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [b.mjs]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [c.cjs]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [d.js]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [e.mjs]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [f.mjs]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+    exports._ = void 0;
+    exports._ = 0;
+});
+//// [g.js]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
+//// [h.mjs]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
+//// [i.cjs]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
+//// [dummy.js]
+(function (factory) {
+    if (typeof module === "object" && typeof module.exports === "object") {
+        var v = factory(require, exports);
+        if (v !== undefined) module.exports = v;
+    }
+    else if (typeof define === "function" && define.amd) {
+        define(["require", "exports"], factory);
+    }
+})(function (require, exports) {
+    "use strict";
+    Object.defineProperty(exports, "__esModule", { value: true });
+});
diff --git a/tests/baselines/reference/impliedNodeFormatEmit2(module=commonjs).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit2(module=commonjs).errors.txt
new file mode 100644
index 0000000000000..b783a3b97e8cd
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit2(module=commonjs).errors.txt
@@ -0,0 +1,40 @@
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /package.json (0 errors) ====
+    {}
+    
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit2(module=commonjs).js b/tests/baselines/reference/impliedNodeFormatEmit2(module=commonjs).js
new file mode 100644
index 0000000000000..4fd6dc70684ae
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit2(module=commonjs).js
@@ -0,0 +1,71 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit2.ts] ////
+
+//// [package.json]
+{}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/impliedNodeFormatEmit2(module=esnext).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit2(module=esnext).errors.txt
new file mode 100644
index 0000000000000..a74bc098343a7
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit2(module=esnext).errors.txt
@@ -0,0 +1,47 @@
+/g.ts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/h.mts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/i.cts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+
+
+==== /package.json (0 errors) ====
+    {}
+    
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /h.mts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /i.cts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit2(module=esnext).js b/tests/baselines/reference/impliedNodeFormatEmit2(module=esnext).js
new file mode 100644
index 0000000000000..df4f9efe15711
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit2(module=esnext).js
@@ -0,0 +1,63 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit2.ts] ////
+
+//// [package.json]
+{}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+export {};
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+export {};
diff --git a/tests/baselines/reference/impliedNodeFormatEmit2(module=preserve).js b/tests/baselines/reference/impliedNodeFormatEmit2(module=preserve).js
new file mode 100644
index 0000000000000..ca5229e56031b
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit2(module=preserve).js
@@ -0,0 +1,55 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit2.ts] ////
+
+//// [package.json]
+{}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+export var _ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+//// [h.mjs]
+//// [i.cjs]
+//// [dummy.js]
diff --git a/tests/baselines/reference/impliedNodeFormatEmit3(module=commonjs).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit3(module=commonjs).errors.txt
new file mode 100644
index 0000000000000..bad14be6e619e
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit3(module=commonjs).errors.txt
@@ -0,0 +1,42 @@
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /package.json (0 errors) ====
+    {
+      "type": "module"
+    }
+    
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit3(module=commonjs).js b/tests/baselines/reference/impliedNodeFormatEmit3(module=commonjs).js
new file mode 100644
index 0000000000000..27f4f58d9ba5b
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit3(module=commonjs).js
@@ -0,0 +1,65 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit3.ts] ////
+
+//// [package.json]
+{
+  "type": "module"
+}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+export {};
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+export {};
diff --git a/tests/baselines/reference/impliedNodeFormatEmit3(module=esnext).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit3(module=esnext).errors.txt
new file mode 100644
index 0000000000000..5f8efe425b6c7
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit3(module=esnext).errors.txt
@@ -0,0 +1,49 @@
+/g.ts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/h.mts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/i.cts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+
+
+==== /package.json (0 errors) ====
+    {
+      "type": "module"
+    }
+    
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /h.mts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /i.cts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit3(module=esnext).js b/tests/baselines/reference/impliedNodeFormatEmit3(module=esnext).js
new file mode 100644
index 0000000000000..27f4f58d9ba5b
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit3(module=esnext).js
@@ -0,0 +1,65 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit3.ts] ////
+
+//// [package.json]
+{
+  "type": "module"
+}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+export {};
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+export {};
diff --git a/tests/baselines/reference/impliedNodeFormatEmit3(module=preserve).js b/tests/baselines/reference/impliedNodeFormatEmit3(module=preserve).js
new file mode 100644
index 0000000000000..91cb7ffa16e6a
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit3(module=preserve).js
@@ -0,0 +1,57 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit3.ts] ////
+
+//// [package.json]
+{
+  "type": "module"
+}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+export var _ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+//// [h.mjs]
+//// [i.cjs]
+//// [dummy.js]
diff --git a/tests/baselines/reference/impliedNodeFormatEmit4(module=commonjs).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit4(module=commonjs).errors.txt
new file mode 100644
index 0000000000000..5229094dfa736
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit4(module=commonjs).errors.txt
@@ -0,0 +1,42 @@
+error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+
+
+!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
+==== /package.json (0 errors) ====
+    {
+      "type": "commonjs"
+    }
+    
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /h.mts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /i.cts (0 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit4(module=commonjs).js b/tests/baselines/reference/impliedNodeFormatEmit4(module=commonjs).js
new file mode 100644
index 0000000000000..aa7fab5c345d9
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit4(module=commonjs).js
@@ -0,0 +1,73 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit4.ts] ////
+
+//// [package.json]
+{
+  "type": "commonjs"
+}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/impliedNodeFormatEmit4(module=esnext).errors.txt b/tests/baselines/reference/impliedNodeFormatEmit4(module=esnext).errors.txt
new file mode 100644
index 0000000000000..996c1c41bad96
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit4(module=esnext).errors.txt
@@ -0,0 +1,49 @@
+/g.ts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/h.mts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+/i.cts(2,1): error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+
+
+==== /package.json (0 errors) ====
+    {
+      "type": "commonjs"
+    }
+    
+==== /a.ts (0 errors) ====
+    export const _ = 0;
+    
+==== /b.mts (0 errors) ====
+    export const _ = 0;
+    
+==== /c.cts (0 errors) ====
+    export const _ = 0;
+    
+==== /d.js (0 errors) ====
+    export const _ = 0;
+    
+==== /e.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /f.mjs (0 errors) ====
+    export const _ = 0;
+    
+==== /g.ts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /h.mts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /i.cts (1 errors) ====
+    import {} from "./a";
+    import a = require("./a");
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~
+!!! error TS1202: Import assignment cannot be used when targeting ECMAScript modules. Consider using 'import * as ns from "mod"', 'import {a} from "mod"', 'import d from "mod"', or another module format instead.
+    
+==== /dummy.ts (0 errors) ====
+    export {};
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/impliedNodeFormatEmit4(module=esnext).js b/tests/baselines/reference/impliedNodeFormatEmit4(module=esnext).js
new file mode 100644
index 0000000000000..aa7fab5c345d9
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit4(module=esnext).js
@@ -0,0 +1,73 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit4.ts] ////
+
+//// [package.json]
+{
+  "type": "commonjs"
+}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [d.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._ = void 0;
+exports._ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [h.mjs]
+export {};
+//// [i.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+//// [dummy.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/tests/baselines/reference/impliedNodeFormatEmit4(module=preserve).js b/tests/baselines/reference/impliedNodeFormatEmit4(module=preserve).js
new file mode 100644
index 0000000000000..3de162effe8f8
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatEmit4(module=preserve).js
@@ -0,0 +1,57 @@
+//// [tests/cases/compiler/impliedNodeFormatEmit4.ts] ////
+
+//// [package.json]
+{
+  "type": "commonjs"
+}
+
+//// [a.ts]
+export const _ = 0;
+
+//// [b.mts]
+export const _ = 0;
+
+//// [c.cts]
+export const _ = 0;
+
+//// [d.js]
+export const _ = 0;
+
+//// [e.mjs]
+export const _ = 0;
+
+//// [f.mjs]
+export const _ = 0;
+
+//// [g.ts]
+import {} from "./a";
+import a = require("./a");
+
+//// [h.mts]
+import {} from "./a";
+import a = require("./a");
+
+//// [i.cts]
+import {} from "./a";
+import a = require("./a");
+
+//// [dummy.ts]
+export {};
+
+
+//// [a.js]
+export var _ = 0;
+//// [b.mjs]
+export var _ = 0;
+//// [c.cjs]
+export var _ = 0;
+//// [d.js]
+export var _ = 0;
+//// [e.mjs]
+export var _ = 0;
+//// [f.mjs]
+export var _ = 0;
+//// [g.js]
+//// [h.mjs]
+//// [i.cjs]
+//// [dummy.js]
diff --git a/tests/baselines/reference/impliedNodeFormatInterop1.js b/tests/baselines/reference/impliedNodeFormatInterop1.js
new file mode 100644
index 0000000000000..8f57e8dce3d80
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatInterop1.js
@@ -0,0 +1,30 @@
+//// [tests/cases/compiler/impliedNodeFormatInterop1.ts] ////
+
+//// [package.json]
+{
+  "name": "highlight.js",
+  "type": "commonjs",
+  "types": "index.d.ts"
+}
+
+//// [index.d.ts]
+declare module "highlight.js" {
+  export interface HighlightAPI {
+    highlight(code: string): string;
+  }
+  const hljs: HighlightAPI;
+  export default hljs;
+}
+
+//// [core.d.ts]
+import hljs from "highlight.js";
+export default hljs;
+
+//// [index.ts]
+import hljs from "highlight.js/lib/core";
+hljs.highlight("code");
+
+
+//// [index.js]
+import hljs from "highlight.js/lib/core";
+hljs.highlight("code");
diff --git a/tests/baselines/reference/impliedNodeFormatInterop1.symbols b/tests/baselines/reference/impliedNodeFormatInterop1.symbols
new file mode 100644
index 0000000000000..15b707874681b
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatInterop1.symbols
@@ -0,0 +1,37 @@
+//// [tests/cases/compiler/impliedNodeFormatInterop1.ts] ////
+
+=== /node_modules/highlight.js/index.d.ts ===
+declare module "highlight.js" {
+>"highlight.js" : Symbol("highlight.js", Decl(index.d.ts, 0, 0))
+
+  export interface HighlightAPI {
+>HighlightAPI : Symbol(HighlightAPI, Decl(index.d.ts, 0, 31))
+
+    highlight(code: string): string;
+>highlight : Symbol(HighlightAPI.highlight, Decl(index.d.ts, 1, 33))
+>code : Symbol(code, Decl(index.d.ts, 2, 14))
+  }
+  const hljs: HighlightAPI;
+>hljs : Symbol(hljs, Decl(index.d.ts, 4, 7))
+>HighlightAPI : Symbol(HighlightAPI, Decl(index.d.ts, 0, 31))
+
+  export default hljs;
+>hljs : Symbol(hljs, Decl(index.d.ts, 4, 7))
+}
+
+=== /node_modules/highlight.js/lib/core.d.ts ===
+import hljs from "highlight.js";
+>hljs : Symbol(hljs, Decl(core.d.ts, 0, 6))
+
+export default hljs;
+>hljs : Symbol(hljs, Decl(core.d.ts, 0, 6))
+
+=== /index.ts ===
+import hljs from "highlight.js/lib/core";
+>hljs : Symbol(hljs, Decl(index.ts, 0, 6))
+
+hljs.highlight("code");
+>hljs.highlight : Symbol(HighlightAPI.highlight, Decl(index.d.ts, 1, 33))
+>hljs : Symbol(hljs, Decl(index.ts, 0, 6))
+>highlight : Symbol(HighlightAPI.highlight, Decl(index.d.ts, 1, 33))
+
diff --git a/tests/baselines/reference/impliedNodeFormatInterop1.types b/tests/baselines/reference/impliedNodeFormatInterop1.types
new file mode 100644
index 0000000000000..0ef0fe7f90421
--- /dev/null
+++ b/tests/baselines/reference/impliedNodeFormatInterop1.types
@@ -0,0 +1,49 @@
+//// [tests/cases/compiler/impliedNodeFormatInterop1.ts] ////
+
+=== /node_modules/highlight.js/index.d.ts ===
+declare module "highlight.js" {
+>"highlight.js" : typeof import("highlight.js")
+>               : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+  export interface HighlightAPI {
+    highlight(code: string): string;
+>highlight : (code: string) => string
+>          : ^    ^^      ^^^^^      
+>code : string
+>     : ^^^^^^
+  }
+  const hljs: HighlightAPI;
+>hljs : HighlightAPI
+>     : ^^^^^^^^^^^^
+
+  export default hljs;
+>hljs : HighlightAPI
+>     : ^^^^^^^^^^^^
+}
+
+=== /node_modules/highlight.js/lib/core.d.ts ===
+import hljs from "highlight.js";
+>hljs : import("highlight.js").HighlightAPI
+>     : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+export default hljs;
+>hljs : import("highlight.js").HighlightAPI
+>     : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+=== /index.ts ===
+import hljs from "highlight.js/lib/core";
+>hljs : import("highlight.js").HighlightAPI
+>     : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+hljs.highlight("code");
+>hljs.highlight("code") : string
+>                       : ^^^^^^
+>hljs.highlight : (code: string) => string
+>               : ^    ^^      ^^^^^^^^^^^
+>hljs : import("highlight.js").HighlightAPI
+>     : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+>highlight : (code: string) => string
+>          : ^    ^^      ^^^^^^^^^^^
+>"code" : "code"
+>       : ^^^^^^
+
diff --git a/tests/baselines/reference/importWithTrailingSlash.trace.json b/tests/baselines/reference/importWithTrailingSlash.trace.json
index 175ef9b3d66a1..a3071adb553da 100644
--- a/tests/baselines/reference/importWithTrailingSlash.trace.json
+++ b/tests/baselines/reference/importWithTrailingSlash.trace.json
@@ -1,8 +1,13 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '.' from '/a/test.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/a/', target file types: TypeScript, Declaration.",
-    "File '/a/package.json' does not exist.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
     "File '/a/index.ts' exists - use it as a name resolution result.",
     "======== Module name '.' was successfully resolved to '/a/index.ts'. ========",
     "======== Resolving module './' from '/a/test.ts'. ========",
@@ -11,6 +16,9 @@
     "File '/a/package.json' does not exist according to earlier cached lookups.",
     "File '/a/index.ts' exists - use it as a name resolution result.",
     "======== Module name './' was successfully resolved to '/a/index.ts'. ========",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '..' from '/a/b/test.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/a/', target file types: TypeScript, Declaration.",
@@ -23,6 +31,8 @@
     "File '/a/package.json' does not exist according to earlier cached lookups.",
     "File '/a/index.ts' exists - use it as a name resolution result.",
     "======== Module name '../' was successfully resolved to '/a/index.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +46,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +61,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,6 +91,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -88,6 +106,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -100,5 +120,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/importWithTrailingSlash_noResolve.trace.json b/tests/baselines/reference/importWithTrailingSlash_noResolve.trace.json
index 1dde7eb385678..054f5da2a9856 100644
--- a/tests/baselines/reference/importWithTrailingSlash_noResolve.trace.json
+++ b/tests/baselines/reference/importWithTrailingSlash_noResolve.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo/' from '/a.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo/', target file types: TypeScript, Declaration.",
@@ -6,6 +7,8 @@
     "Loading module as file / folder, candidate module location '/foo/', target file types: JavaScript.",
     "Directory '/foo/' does not exist, skipping all lookups in it.",
     "======== Module name './foo/' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +22,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +37,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +52,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +67,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +82,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,5 +96,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/jsdocInTypeScript.trace.json b/tests/baselines/reference/jsdocInTypeScript.trace.json
index 20d11f3ea7f87..edb4f9e328e03 100644
--- a/tests/baselines/reference/jsdocInTypeScript.trace.json
+++ b/tests/baselines/reference/jsdocInTypeScript.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +14,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +29,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +44,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +59,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +74,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -77,6 +89,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,6 +104,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -103,6 +119,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -116,6 +134,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,6 +149,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -142,6 +164,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -155,6 +179,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -167,5 +193,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========"
+    "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/legacyNodeModulesExportsSpecifierGenerationConditions.js b/tests/baselines/reference/legacyNodeModulesExportsSpecifierGenerationConditions.js
index b78501533ba4c..287c6556e46f5 100644
--- a/tests/baselines/reference/legacyNodeModulesExportsSpecifierGenerationConditions.js
+++ b/tests/baselines/reference/legacyNodeModulesExportsSpecifierGenerationConditions.js
@@ -32,7 +32,6 @@ export interface Thing {} // not exported in export map, inaccessible under new
 }
 
 //// [index.js]
-"use strict";
 var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
     function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
     return new (P || (P = Promise))(function (resolve, reject) {
@@ -69,15 +68,12 @@ var __generator = (this && this.__generator) || function (thisArg, body) {
         if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
     }
 };
-Object.defineProperty(exports, "__esModule", { value: true });
-exports.a = void 0;
-var a = function () { return __awaiter(void 0, void 0, void 0, function () { return __generator(this, function (_a) {
+export var a = function () { return __awaiter(void 0, void 0, void 0, function () { return __generator(this, function (_a) {
     switch (_a.label) {
-        case 0: return [4 /*yield*/, Promise.resolve().then(function () { return require("inner"); })];
+        case 0: return [4 /*yield*/, import("inner")];
         case 1: return [2 /*return*/, (_a.sent()).x()];
     }
 }); }); };
-exports.a = a;
 
 
 //// [index.d.ts]
diff --git a/tests/baselines/reference/libTypeScriptOverrideSimple.trace.json b/tests/baselines/reference/libTypeScriptOverrideSimple.trace.json
index cda94c2befb65..a265627564b85 100644
--- a/tests/baselines/reference/libTypeScriptOverrideSimple.trace.json
+++ b/tests/baselines/reference/libTypeScriptOverrideSimple.trace.json
@@ -1,11 +1,17 @@
 [
+    "File '/node_modules/@typescript/lib-dom/package.json' does not exist.",
+    "File '/node_modules/@typescript/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom'",
-    "File '/node_modules/@typescript/lib-dom/package.json' does not exist.",
+    "File '/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.",
     "File '/node_modules/@typescript/lib-dom.ts' does not exist.",
     "File '/node_modules/@typescript/lib-dom.tsx' does not exist.",
     "File '/node_modules/@typescript/lib-dom.d.ts' does not exist.",
@@ -14,6 +20,8 @@
     "File '/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@typescript/lib-dom/index.d.ts', result '/node_modules/@typescript/lib-dom/index.d.ts'.",
     "======== Module name '@typescript/lib-dom' was successfully resolved to '/node_modules/@typescript/lib-dom/index.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +39,8 @@
     "File '/node_modules/@typescript/lib-es5.js' does not exist.",
     "File '/node_modules/@typescript/lib-es5.jsx' does not exist.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +58,8 @@
     "File '/node_modules/@typescript/lib-decorators.js' does not exist.",
     "File '/node_modules/@typescript/lib-decorators.jsx' does not exist.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +72,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +86,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -88,5 +104,7 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "File '/node_modules/@typescript/lib-scripthost.js' does not exist.",
     "File '/node_modules/@typescript/lib-scripthost.jsx' does not exist.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/libTypeScriptOverrideSimpleConfig.trace.json b/tests/baselines/reference/libTypeScriptOverrideSimpleConfig.trace.json
index 8edd966941288..1a05dc5279c45 100644
--- a/tests/baselines/reference/libTypeScriptOverrideSimpleConfig.trace.json
+++ b/tests/baselines/reference/libTypeScriptOverrideSimpleConfig.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/somepath/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-dom' from '/somepath/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +14,13 @@
     "File '/somepath/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/somepath/node_modules/@typescript/lib-dom/index.d.ts', result '/somepath/node_modules/@typescript/lib-dom/index.d.ts'.",
     "======== Module name '@typescript/lib-dom' was successfully resolved to '/somepath/node_modules/@typescript/lib-dom/index.d.ts'. ========",
+    "File '/somepath/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.",
+    "File '/somepath/node_modules/@typescript/package.json' does not exist.",
+    "File '/somepath/node_modules/package.json' does not exist.",
+    "File '/somepath/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/somepath/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +38,8 @@
     "File '/somepath/node_modules/@typescript/lib-es5.jsx' does not exist.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/somepath/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +57,8 @@
     "File '/somepath/node_modules/@typescript/lib-decorators.jsx' does not exist.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/somepath/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/somepath/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/somepath/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,5 +103,7 @@
     "File '/somepath/node_modules/@typescript/lib-scripthost.js' does not exist.",
     "File '/somepath/node_modules/@typescript/lib-scripthost.jsx' does not exist.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/libTypeScriptSubfileResolving.trace.json b/tests/baselines/reference/libTypeScriptSubfileResolving.trace.json
index 306175b8fba2b..9043ad759d439 100644
--- a/tests/baselines/reference/libTypeScriptSubfileResolving.trace.json
+++ b/tests/baselines/reference/libTypeScriptSubfileResolving.trace.json
@@ -1,16 +1,28 @@
 [
+    "File '/node_modules/@typescript/lib-dom/package.json' does not exist.",
+    "File '/node_modules/@typescript/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Scoped package detected, looking in 'typescript__lib-dom/iterable'",
-    "File '/node_modules/@typescript/lib-dom/package.json' does not exist.",
+    "File '/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.",
     "File '/node_modules/@typescript/lib-dom/iterable.ts' does not exist.",
     "File '/node_modules/@typescript/lib-dom/iterable.tsx' does not exist.",
     "File '/node_modules/@typescript/lib-dom/iterable.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@typescript/lib-dom/iterable.d.ts', result '/node_modules/@typescript/lib-dom/iterable.d.ts'.",
     "======== Module name '@typescript/lib-dom/iterable' was successfully resolved to '/node_modules/@typescript/lib-dom/iterable.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +40,8 @@
     "File '/node_modules/@typescript/lib-es5.js' does not exist.",
     "File '/node_modules/@typescript/lib-es5.jsx' does not exist.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +59,8 @@
     "File '/node_modules/@typescript/lib-decorators.js' does not exist.",
     "File '/node_modules/@typescript/lib-decorators.jsx' does not exist.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +102,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -100,5 +120,7 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "File '/node_modules/@typescript/lib-scripthost.js' does not exist.",
     "File '/node_modules/@typescript/lib-scripthost.jsx' does not exist.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/libTypeScriptSubfileResolvingConfig.trace.json b/tests/baselines/reference/libTypeScriptSubfileResolvingConfig.trace.json
index 042ae9b861666..551de29b705b0 100644
--- a/tests/baselines/reference/libTypeScriptSubfileResolvingConfig.trace.json
+++ b/tests/baselines/reference/libTypeScriptSubfileResolvingConfig.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/somepath/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/somepath/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -9,6 +11,13 @@
     "File '/somepath/node_modules/@typescript/lib-dom/iterable.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/somepath/node_modules/@typescript/lib-dom/iterable.d.ts', result '/somepath/node_modules/@typescript/lib-dom/iterable.d.ts'.",
     "======== Module name '@typescript/lib-dom/iterable' was successfully resolved to '/somepath/node_modules/@typescript/lib-dom/iterable.d.ts'. ========",
+    "File '/somepath/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.",
+    "File '/somepath/node_modules/@typescript/package.json' does not exist.",
+    "File '/somepath/node_modules/package.json' does not exist.",
+    "File '/somepath/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/somepath/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +35,8 @@
     "File '/somepath/node_modules/@typescript/lib-es5.jsx' does not exist.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/somepath/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +54,8 @@
     "File '/somepath/node_modules/@typescript/lib-decorators.jsx' does not exist.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/somepath/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/somepath/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +83,11 @@
     "File '/somepath/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/somepath/node_modules/@typescript/lib-dom/index.d.ts', result '/somepath/node_modules/@typescript/lib-dom/index.d.ts'.",
     "======== Module name '@typescript/lib-dom' was successfully resolved to '/somepath/node_modules/@typescript/lib-dom/index.d.ts'. ========",
+    "File '/somepath/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.",
+    "File '/somepath/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.",
+    "File '/somepath/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/somepath/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/somepath/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,6 +100,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/somepath/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,5 +118,7 @@
     "File '/somepath/node_modules/@typescript/lib-scripthost.js' does not exist.",
     "File '/somepath/node_modules/@typescript/lib-scripthost.jsx' does not exist.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-1.trace.json b/tests/baselines/reference/library-reference-1.trace.json
index 80f8b8e4ab270..2661687218fd5 100644
--- a/tests/baselines/reference/library-reference-1.trace.json
+++ b/tests/baselines/reference/library-reference-1.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/src/consumer.ts', root directory '/src/types'. ========",
     "Resolving with primary search path '/src/types'.",
     "File '/src/types/jquery.d.ts' does not exist.",
@@ -6,6 +8,10 @@
     "File '/src/types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/src/types/jquery/index.d.ts', result '/src/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/src/types/jquery/index.d.ts', primary: true. ========",
+    "File '/src/types/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/types/package.json' does not exist.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/.src/__inferred type names__.ts', root directory '/src/types'. ========",
     "Resolving with primary search path '/src/types'.",
     "File '/src/types/jquery.d.ts' does not exist.",
@@ -13,6 +19,8 @@
     "File '/src/types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/src/types/jquery/index.d.ts', result '/src/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/src/types/jquery/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +34,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +49,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +64,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,6 +79,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +94,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,5 +108,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-10.trace.json b/tests/baselines/reference/library-reference-10.trace.json
index 937099add14b8..59a6af6907e31 100644
--- a/tests/baselines/reference/library-reference-10.trace.json
+++ b/tests/baselines/reference/library-reference-10.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/foo/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/foo/consumer.ts', root directory '/foo/types'. ========",
     "Resolving with primary search path '/foo/types'.",
     "File '/foo/types/jquery.d.ts' does not exist.",
@@ -8,6 +10,7 @@
     "File '/foo/types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/foo/types/jquery/jquery.d.ts', result '/foo/types/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/foo/types/jquery/jquery.d.ts', primary: true. ========",
+    "File '/foo/types/jquery/package.json' exists according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/.src/__inferred type names__.ts', root directory '/foo/types'. ========",
     "Resolving with primary search path '/foo/types'.",
     "File '/foo/types/jquery.d.ts' does not exist.",
@@ -16,6 +19,8 @@
     "File '/foo/types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/foo/types/jquery/jquery.d.ts', result '/foo/types/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/foo/types/jquery/jquery.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +34,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +64,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +79,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +94,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,5 +108,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-11.trace.json b/tests/baselines/reference/library-reference-11.trace.json
index db45efcb8ec0c..2257bbeb5ab5e 100644
--- a/tests/baselines/reference/library-reference-11.trace.json
+++ b/tests/baselines/reference/library-reference-11.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/a/b/consumer.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
@@ -12,6 +15,9 @@
     "File '/a/node_modules/jquery/jquery.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/node_modules/jquery/jquery.d.ts', result '/a/node_modules/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/a/node_modules/jquery/jquery.d.ts', primary: false. ========",
+    "File '/a/node_modules/jquery/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +28,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +40,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +76,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,5 +87,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-12.trace.json b/tests/baselines/reference/library-reference-12.trace.json
index 713d17764d985..4a46664132c25 100644
--- a/tests/baselines/reference/library-reference-12.trace.json
+++ b/tests/baselines/reference/library-reference-12.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/a/b/consumer.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
@@ -13,6 +16,10 @@
     "File '/a/node_modules/jquery/dist/jquery.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/node_modules/jquery/dist/jquery.d.ts', result '/a/node_modules/jquery/dist/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/a/node_modules/jquery/dist/jquery.d.ts', primary: false. ========",
+    "File '/a/node_modules/jquery/dist/package.json' does not exist.",
+    "File '/a/node_modules/jquery/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -23,6 +30,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +42,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +54,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -53,6 +66,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +78,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,5 +89,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-13.trace.json b/tests/baselines/reference/library-reference-13.trace.json
index 9038d8c571259..7e3caab4f0997 100644
--- a/tests/baselines/reference/library-reference-13.trace.json
+++ b/tests/baselines/reference/library-reference-13.trace.json
@@ -1,11 +1,20 @@
 [
+    "File '/a/types/jquery/package.json' does not exist.",
+    "File '/a/types/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/a/__inferred type names__.ts', root directory '/a/types'. ========",
     "Resolving with primary search path '/a/types'.",
     "File '/a/types/jquery.d.ts' does not exist.",
-    "File '/a/types/jquery/package.json' does not exist.",
+    "File '/a/types/jquery/package.json' does not exist according to earlier cached lookups.",
     "File '/a/types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/types/jquery/index.d.ts', result '/a/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/a/types/jquery/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/a/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +28,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/a/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +43,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/a/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +58,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/a/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +73,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/a/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +88,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/a/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,5 +102,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-14.trace.json b/tests/baselines/reference/library-reference-14.trace.json
index 9038d8c571259..48bbd7a6e139b 100644
--- a/tests/baselines/reference/library-reference-14.trace.json
+++ b/tests/baselines/reference/library-reference-14.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/a/__inferred type names__.ts', root directory '/a/types'. ========",
     "Resolving with primary search path '/a/types'.",
     "File '/a/types/jquery.d.ts' does not exist.",
@@ -6,6 +9,12 @@
     "File '/a/types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/types/jquery/index.d.ts', result '/a/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/a/types/jquery/index.d.ts', primary: true. ========",
+    "File '/a/types/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/types/package.json' does not exist.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/a/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +28,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/a/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +43,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/a/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +58,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/a/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +73,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/a/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +88,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/a/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,5 +102,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-15.trace.json b/tests/baselines/reference/library-reference-15.trace.json
index 81e40d2da598e..bcb7f815ecc3a 100644
--- a/tests/baselines/reference/library-reference-15.trace.json
+++ b/tests/baselines/reference/library-reference-15.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/.src/__inferred type names__.ts', root directory '/a/types'. ========",
     "Resolving with primary search path '/a/types'.",
     "File '/a/types/jquery.d.ts' does not exist.",
@@ -6,6 +9,12 @@
     "File '/a/types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/types/jquery/index.d.ts', result '/a/types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/a/types/jquery/index.d.ts', primary: true. ========",
+    "File '/a/types/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/types/package.json' does not exist.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +28,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +43,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +58,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +73,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +88,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,5 +102,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-2.trace.json b/tests/baselines/reference/library-reference-2.trace.json
index efcd611af477b..2794516b51398 100644
--- a/tests/baselines/reference/library-reference-2.trace.json
+++ b/tests/baselines/reference/library-reference-2.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/consumer.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/jquery.d.ts' does not exist.",
@@ -9,6 +10,7 @@
     "File '/types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/jquery/jquery.d.ts', result '/types/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/types/jquery/jquery.d.ts', primary: true. ========",
+    "File '/types/jquery/package.json' exists according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/test/__inferred type names__.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/jquery.d.ts' does not exist.",
@@ -18,6 +20,8 @@
     "File '/types/jquery/jquery.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/jquery/jquery.d.ts', result '/types/jquery/jquery.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/types/jquery/jquery.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/test/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +35,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/test/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +50,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/test/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +65,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/test/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +80,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/test/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +95,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/test/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +109,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-3.trace.json b/tests/baselines/reference/library-reference-3.trace.json
index f4d640e4aadc9..a3421d313e456 100644
--- a/tests/baselines/reference/library-reference-3.trace.json
+++ b/tests/baselines/reference/library-reference-3.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/src/consumer.ts', root directory '/src/node_modules/@types,/node_modules/@types'. ========",
     "Resolving with primary search path '/src/node_modules/@types, /node_modules/@types'.",
     "Directory '/src/node_modules/@types' does not exist, skipping all lookups in it.",
@@ -10,6 +12,12 @@
     "File '/src/node_modules/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/src/node_modules/jquery/index.d.ts', result '/src/node_modules/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/src/node_modules/jquery/index.d.ts', primary: false. ========",
+    "File '/src/node_modules/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/node_modules/package.json' does not exist.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +30,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +44,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +58,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +72,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +86,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +99,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-4.trace.json b/tests/baselines/reference/library-reference-4.trace.json
index bfaaf2b2cd065..9e5a5c07bdb1b 100644
--- a/tests/baselines/reference/library-reference-4.trace.json
+++ b/tests/baselines/reference/library-reference-4.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'foo', containing file '/src/root.ts', root directory '/src'. ========",
     "Resolving with primary search path '/src'.",
     "File '/src/foo.d.ts' does not exist.",
@@ -21,6 +23,9 @@
     "File '/node_modules/bar/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/bar/index.d.ts', result '/node_modules/bar/index.d.ts'.",
     "======== Type reference directive 'bar' was successfully resolved to '/node_modules/bar/index.d.ts', primary: false. ========",
+    "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'alpha', containing file '/node_modules/foo/index.d.ts', root directory '/src'. ========",
     "Resolving with primary search path '/src'.",
     "File '/src/alpha.d.ts' does not exist.",
@@ -31,6 +36,14 @@
     "File '/node_modules/foo/node_modules/alpha/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/foo/node_modules/alpha/index.d.ts', result '/node_modules/foo/node_modules/alpha/index.d.ts'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/foo/node_modules/alpha/index.d.ts', primary: false. ========",
+    "File '/node_modules/foo/node_modules/alpha/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/foo/node_modules/package.json' does not exist.",
+    "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/bar/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'alpha', containing file '/node_modules/bar/index.d.ts', root directory '/src'. ========",
     "Resolving with primary search path '/src'.",
     "File '/src/alpha.d.ts' does not exist.",
@@ -41,6 +54,8 @@
     "File '/node_modules/bar/node_modules/alpha/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/bar/node_modules/alpha/index.d.ts', result '/node_modules/bar/node_modules/alpha/index.d.ts'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/bar/node_modules/alpha/index.d.ts', primary: false. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/test/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +71,8 @@
     "Directory '/.src/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/test/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +88,8 @@
     "Directory '/.src/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/test/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,6 +105,8 @@
     "Directory '/.src/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/test/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -101,6 +122,8 @@
     "Directory '/.src/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/test/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -116,6 +139,8 @@
     "Directory '/.src/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/test/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -130,5 +155,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-5.trace.json b/tests/baselines/reference/library-reference-5.trace.json
index 6c7738d6016b4..47d50c37a28ee 100644
--- a/tests/baselines/reference/library-reference-5.trace.json
+++ b/tests/baselines/reference/library-reference-5.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'foo', containing file '/src/root.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "Directory '/types' does not exist, skipping all lookups in it.",
@@ -21,6 +23,9 @@
     "File '/node_modules/bar/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/bar/index.d.ts', result '/node_modules/bar/index.d.ts'.",
     "======== Type reference directive 'bar' was successfully resolved to '/node_modules/bar/index.d.ts', primary: false. ========",
+    "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'alpha', containing file '/node_modules/foo/index.d.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "Directory '/types' does not exist, skipping all lookups in it.",
@@ -31,6 +36,14 @@
     "File '/node_modules/foo/node_modules/alpha/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/foo/node_modules/alpha/index.d.ts', result '/node_modules/foo/node_modules/alpha/index.d.ts'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/foo/node_modules/alpha/index.d.ts', primary: false. ========",
+    "File '/node_modules/foo/node_modules/alpha/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/foo/node_modules/package.json' does not exist.",
+    "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/bar/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'alpha', containing file '/node_modules/bar/index.d.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "Directory '/types' does not exist, skipping all lookups in it.",
@@ -41,6 +54,8 @@
     "File '/node_modules/bar/node_modules/alpha/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/bar/node_modules/alpha/index.d.ts', result '/node_modules/bar/node_modules/alpha/index.d.ts'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/bar/node_modules/alpha/index.d.ts', primary: false. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +65,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +76,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +87,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -77,6 +98,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,6 +109,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,5 +119,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-6.trace.json b/tests/baselines/reference/library-reference-6.trace.json
index b6882d645ef2d..41ffdab8de3f7 100644
--- a/tests/baselines/reference/library-reference-6.trace.json
+++ b/tests/baselines/reference/library-reference-6.trace.json
@@ -1,13 +1,21 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'alpha', containing file '/src/foo.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "File '/node_modules/@types/alpha/package.json' does not exist.",
     "File '/node_modules/@types/alpha/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/alpha/index.d.ts', result '/node_modules/@types/alpha/index.d.ts'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/@types/alpha/index.d.ts', primary: true. ========",
+    "File '/node_modules/@types/alpha/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'alpha', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'alpha' was found in cache from location '/'.",
     "======== Type reference directive 'alpha' was successfully resolved to '/node_modules/@types/alpha/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -17,6 +25,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +36,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +46,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +57,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +67,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,5 +77,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-7.trace.json b/tests/baselines/reference/library-reference-7.trace.json
index 4ce6c684d7e3f..6d28106d43699 100644
--- a/tests/baselines/reference/library-reference-7.trace.json
+++ b/tests/baselines/reference/library-reference-7.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/src/consumer.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
@@ -9,6 +11,12 @@
     "File '/src/node_modules/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/src/node_modules/jquery/index.d.ts', result '/src/node_modules/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/src/node_modules/jquery/index.d.ts', primary: false. ========",
+    "File '/src/node_modules/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/node_modules/package.json' does not exist.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +27,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +39,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +51,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +63,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +75,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,5 +86,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-8.trace.json b/tests/baselines/reference/library-reference-8.trace.json
index 4eb78e10cb940..bc4976ce7a90f 100644
--- a/tests/baselines/reference/library-reference-8.trace.json
+++ b/tests/baselines/reference/library-reference-8.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/test/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'alpha', containing file '/test/foo.ts', root directory '/test/types'. ========",
     "Resolving with primary search path '/test/types'.",
     "File '/test/types/alpha.d.ts' does not exist.",
@@ -13,6 +15,10 @@
     "File '/test/types/beta/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/test/types/beta/index.d.ts', result '/test/types/beta/index.d.ts'.",
     "======== Type reference directive 'beta' was successfully resolved to '/test/types/beta/index.d.ts', primary: true. ========",
+    "File '/test/types/alpha/package.json' does not exist according to earlier cached lookups.",
+    "File '/test/types/package.json' does not exist.",
+    "File '/test/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'beta', containing file '/test/types/alpha/index.d.ts', root directory '/test/types'. ========",
     "Resolving with primary search path '/test/types'.",
     "File '/test/types/beta.d.ts' does not exist.",
@@ -20,6 +26,10 @@
     "File '/test/types/beta/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/test/types/beta/index.d.ts', result '/test/types/beta/index.d.ts'.",
     "======== Type reference directive 'beta' was successfully resolved to '/test/types/beta/index.d.ts', primary: true. ========",
+    "File '/test/types/beta/package.json' does not exist according to earlier cached lookups.",
+    "File '/test/types/package.json' does not exist according to earlier cached lookups.",
+    "File '/test/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'alpha', containing file '/test/types/beta/index.d.ts', root directory '/test/types'. ========",
     "Resolving with primary search path '/test/types'.",
     "File '/test/types/alpha.d.ts' does not exist.",
@@ -33,6 +43,8 @@
     "======== Resolving type reference directive 'beta', containing file '/test/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'beta' was found in cache from location '/test'.",
     "======== Type reference directive 'beta' was successfully resolved to '/test/types/beta/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/test/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +58,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/test/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +73,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/test/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +88,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/test/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +103,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/test/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +118,8 @@
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/test/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,5 +132,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/test/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/library-reference-scoped-packages.trace.json b/tests/baselines/reference/library-reference-scoped-packages.trace.json
index cf8cf7ca9c475..af77aecd92eff 100644
--- a/tests/baselines/reference/library-reference-scoped-packages.trace.json
+++ b/tests/baselines/reference/library-reference-scoped-packages.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive '@beep/boop', containing file '/a.ts', root directory '/.src/types'. ========",
     "Resolving with primary search path '/.src/types'.",
     "Directory '/.src/types' does not exist, skipping all lookups in it.",
@@ -10,6 +11,12 @@
     "File '/node_modules/@types/beep__boop/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/beep__boop/index.d.ts', result '/node_modules/@types/beep__boop/index.d.ts'.",
     "======== Type reference directive '@beep/boop' was successfully resolved to '/node_modules/@types/beep__boop/index.d.ts', primary: false. ========",
+    "File '/node_modules/@types/beep__boop/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +29,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +43,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +56,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +70,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +83,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,5 +96,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/maxNodeModuleJsDepthDefaultsToZero.trace.json b/tests/baselines/reference/maxNodeModuleJsDepthDefaultsToZero.trace.json
index a11d237333838..d9f47a736a97d 100644
--- a/tests/baselines/reference/maxNodeModuleJsDepthDefaultsToZero.trace.json
+++ b/tests/baselines/reference/maxNodeModuleJsDepthDefaultsToZero.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/typings/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'shortid' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'shortid' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +22,8 @@
     "File '/node_modules/shortid/index.js' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/shortid/index.js', result '/node_modules/shortid/index.js'.",
     "======== Module name 'shortid' was successfully resolved to '/node_modules/shortid/index.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +33,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +44,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +55,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +66,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +77,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,5 +87,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleDetectionIsolatedModulesCjsFileScope.js b/tests/baselines/reference/moduleDetectionIsolatedModulesCjsFileScope.js
index 5718d67611ead..8d948790c9e6e 100644
--- a/tests/baselines/reference/moduleDetectionIsolatedModulesCjsFileScope.js
+++ b/tests/baselines/reference/moduleDetectionIsolatedModulesCjsFileScope.js
@@ -6,8 +6,9 @@ const a = 2;
 const a = 2;
 
 //// [filename.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
 const a = 2;
-export {};
 //// [filename.mjs]
 const a = 2;
 export {};
diff --git a/tests/baselines/reference/modulePreserve2.trace.json b/tests/baselines/reference/modulePreserve2.trace.json
index a61352c6987bb..406e188dcf219 100644
--- a/tests/baselines/reference/modulePreserve2.trace.json
+++ b/tests/baselines/reference/modulePreserve2.trace.json
@@ -1,8 +1,9 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'dep' from '/main.js'. ========",
     "Module resolution kind is not specified, using 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'dep' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Found 'package.json' at '/node_modules/dep/package.json'.",
@@ -35,6 +36,9 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/dep/require.d.ts', result '/node_modules/dep/require.d.ts'.",
     "======== Module name 'dep' was successfully resolved to '/node_modules/dep/require.d.ts'. ========",
+    "File '/node_modules/dep/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -47,6 +51,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +65,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +79,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +93,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,6 +107,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -107,6 +121,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,6 +135,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -131,6 +149,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -143,6 +163,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -155,6 +177,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -167,6 +191,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -179,6 +205,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -191,6 +219,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -203,6 +233,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -215,6 +247,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -227,6 +261,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -239,6 +275,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -251,6 +289,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -263,6 +303,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -275,6 +317,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -287,6 +331,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -299,6 +345,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -311,6 +359,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -323,6 +373,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -335,6 +387,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -347,6 +401,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -359,6 +415,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -371,6 +429,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -383,6 +443,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -395,6 +457,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -407,6 +471,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -419,6 +485,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -431,6 +499,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -443,6 +513,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -455,6 +527,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -467,6 +541,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -479,6 +555,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -491,6 +569,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -503,6 +583,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -515,6 +597,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -527,6 +611,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -539,6 +625,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -551,6 +639,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -563,6 +653,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -575,6 +667,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -587,6 +681,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -599,6 +695,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -611,6 +709,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -623,6 +723,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -635,6 +737,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -647,6 +751,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -659,6 +765,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -671,6 +779,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -683,6 +793,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -695,6 +807,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -707,6 +821,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -719,6 +835,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -731,6 +849,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -743,6 +863,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -755,6 +877,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -767,6 +891,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -779,6 +905,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -791,6 +919,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -803,6 +933,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -815,6 +947,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -827,6 +961,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -839,6 +975,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -851,6 +989,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -863,6 +1003,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -875,6 +1017,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -887,6 +1031,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -899,6 +1045,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -911,6 +1059,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -923,6 +1073,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -934,5 +1086,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/modulePreserve3.trace.json b/tests/baselines/reference/modulePreserve3.trace.json
index 9cf8a63b9832c..26a3f3176c907 100644
--- a/tests/baselines/reference/modulePreserve3.trace.json
+++ b/tests/baselines/reference/modulePreserve3.trace.json
@@ -1,11 +1,16 @@
 [
+    "File '/node_modules/@types/react/package.json' does not exist.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'react/jsx-runtime' from '/index.tsx'. ========",
     "Module resolution kind is not specified, using 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'react/jsx-runtime' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "File '/node_modules/@types/react/package.json' does not exist.",
+    "File '/node_modules/@types/react/package.json' does not exist according to earlier cached lookups.",
     "File '/node_modules/@types/react/jsx-runtime.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/react/jsx-runtime.d.ts', result '/node_modules/@types/react/jsx-runtime.d.ts'.",
     "======== Module name 'react/jsx-runtime' was successfully resolved to '/node_modules/@types/react/jsx-runtime.d.ts'. ========",
@@ -22,6 +27,8 @@
     "File '/node_modules/@types/react.d.ts' does not exist.",
     "File '/node_modules/@types/react/index.d.ts' does not exist.",
     "======== Type reference directive 'react' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +41,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +55,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +69,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +83,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +97,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,6 +111,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,6 +125,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -118,6 +139,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -130,6 +153,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -142,6 +167,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -154,6 +181,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -166,6 +195,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -177,6 +208,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -188,6 +221,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -199,6 +234,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -210,6 +247,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -221,6 +260,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -232,6 +273,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -243,6 +286,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -254,6 +299,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -265,6 +312,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -276,6 +325,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -287,6 +338,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -298,6 +351,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -309,6 +364,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -320,6 +377,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -331,6 +390,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -342,6 +403,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -353,6 +416,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -364,6 +429,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -375,6 +442,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -386,6 +455,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -397,6 +468,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -408,6 +481,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -419,6 +494,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -430,6 +507,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -441,6 +520,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -452,6 +533,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -463,6 +546,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -474,6 +559,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -485,6 +572,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -496,6 +585,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -507,6 +598,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -518,6 +611,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -529,6 +624,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -540,6 +637,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -551,6 +650,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -562,6 +663,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -573,6 +676,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -584,6 +689,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -595,6 +702,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -606,6 +715,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -617,6 +728,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -628,6 +741,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -639,6 +754,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -650,6 +767,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -661,6 +780,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -672,6 +793,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -683,6 +806,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -694,6 +819,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -705,6 +832,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -716,6 +845,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -727,6 +858,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -738,6 +871,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -749,6 +884,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -760,6 +897,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -771,6 +910,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -782,6 +923,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -793,6 +936,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -804,6 +949,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -816,6 +963,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -827,6 +976,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -839,6 +990,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -850,6 +1003,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -860,5 +1015,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/modulePreserve4.errors.txt b/tests/baselines/reference/modulePreserve4.errors.txt
index fa8baeb0c390d..65e21aa749b3c 100644
--- a/tests/baselines/reference/modulePreserve4.errors.txt
+++ b/tests/baselines/reference/modulePreserve4.errors.txt
@@ -1,12 +1,22 @@
 /a.js(2,1): error TS2580: Cannot find name 'module'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`.
+/f.cts(1,1): error TS1286: ESM syntax is not allowed in a CommonJS module when 'verbatimModuleSyntax' is enabled.
 /main1.ts(1,13): error TS2305: Module '"./a"' has no exported member 'y'.
 /main1.ts(3,12): error TS2580: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`.
 /main1.ts(19,4): error TS2339: Property 'default' does not exist on type '() => void'.
+/main1.ts(23,8): error TS1192: Module '"/e"' has no default export.
 /main2.mts(1,13): error TS2305: Module '"./a"' has no exported member 'y'.
 /main2.mts(4,4): error TS2339: Property 'default' does not exist on type 'typeof import("/a")'.
 /main2.mts(5,12): error TS2580: Cannot find name 'require'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`.
+/main2.mts(14,8): error TS1192: Module '"/e"' has no default export.
+/main3.cjs(1,10): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
 /main3.cjs(1,13): error TS2305: Module '"./a"' has no exported member 'y'.
 /main3.cjs(2,1): error TS8002: 'import ... =' can only be used in TypeScript files.
+/main3.cjs(5,8): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
+/main3.cjs(8,8): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
+/main3.cjs(10,8): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
+/main3.cjs(12,8): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
+/main3.cjs(14,8): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
+/main3.cjs(17,8): error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
 
 
 ==== /a.js (1 errors) ====
@@ -29,13 +39,15 @@
 ==== /e.mts (0 errors) ====
     export = 0;
     
-==== /f.cts (0 errors) ====
+==== /f.cts (1 errors) ====
     export default 0;
+    ~~~~~~~~~~~~~~~~~
+!!! error TS1286: ESM syntax is not allowed in a CommonJS module when 'verbatimModuleSyntax' is enabled.
     
 ==== /g.js (0 errors) ====
     exports.default = 0;
     
-==== /main1.ts (3 errors) ====
+==== /main1.ts (4 errors) ====
     import { x, y } from "./a"; // No y
                 ~
 !!! error TS2305: Module '"./a"' has no exported member 'y'.
@@ -65,6 +77,8 @@
     d3.default();
     
     import e1 from "./e.mjs"; // 0
+           ~~
+!!! error TS1192: Module '"/e"' has no default export.
     import e2 = require("./e.mjs"); // 0
     import f1 from "./f.cjs"; // 0
     import f2 = require("./f.cjs"); // { default: 0 }
@@ -75,7 +89,7 @@
     import g2 = require("./g"); // { default: 0 }
     g2.default;
     
-==== /main2.mts (3 errors) ====
+==== /main2.mts (4 errors) ====
     import { x, y } from "./a"; // No y
                 ~
 !!! error TS2305: Module '"./a"' has no exported member 'y'.
@@ -96,6 +110,8 @@
     import d1 from "./d"; // [Function: default]
     import d2 = require("./d"); // [Function: default]
     import e1 from "./e.mjs"; // 0
+           ~~
+!!! error TS1192: Module '"/e"' has no default export.
     import e2 = require("./e.mjs"); // 0
     import f1 from "./f.cjs"; // 0
     import f2 = require("./f.cjs"); // { default: 0 }
@@ -103,8 +119,10 @@
     import g1 from "./g"; // { default: 0 }
     import g2 = require("./g"); // { default: 0 }
     
-==== /main3.cjs (2 errors) ====
+==== /main3.cjs (9 errors) ====
     import { x, y } from "./a"; // No y
+             ~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
                 ~
 !!! error TS2305: Module '"./a"' has no exported member 'y'.
     import a1 = require("./a"); // Error in JS
@@ -113,20 +131,35 @@
     const a2 = require("./a"); // { x: 0 }
     
     import b1 from "./b"; // 0
+           ~~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
     const b2 = require("./b"); // { default: 0 }
     
     import c1 from "./c"; // { default: [Function: default] }
+           ~~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
     const c2 = require("./c"); // { default: [Function: default] }
     import d1 from "./d"; // [Function: default]
+           ~~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
     const d2 = require("./d"); // [Function: default]
     import e1 from "./e.mjs"; // 0
+           ~~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
     const e2 = require("./e.mjs"); // 0
     import f1 from "./f.cjs"; // 0
+           ~~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
     const f2 = require("./f.cjs"); // { default: 0 }
     
     import g1 from "./g"; // { default: 0 }
+           ~~
+!!! error TS1293: ESM syntax is not allowed in a CommonJS module when 'module' is set to 'preserve'.
     const g2 = require("./g"); // { default: 0 }
     
+==== /main4.cjs (0 errors) ====
+    exports.x = require("./g");
+    
 ==== /dummy.ts (0 errors) ====
     export {}; // Silly test harness
     
\ No newline at end of file
diff --git a/tests/baselines/reference/modulePreserve4.js b/tests/baselines/reference/modulePreserve4.js
index e5e009d628b0c..536f52f3a4897 100644
--- a/tests/baselines/reference/modulePreserve4.js
+++ b/tests/baselines/reference/modulePreserve4.js
@@ -100,6 +100,9 @@ const f2 = require("./f.cjs"); // { default: 0 }
 import g1 from "./g"; // { default: 0 }
 const g2 = require("./g"); // { default: 0 }
 
+//// [main4.cjs]
+exports.x = require("./g");
+
 //// [dummy.ts]
 export {}; // Silly test harness
 
@@ -185,6 +188,8 @@ import f1 from "./f.cjs"; // 0
 const f2 = require("./f.cjs"); // { default: 0 }
 import g1 from "./g"; // { default: 0 }
 const g2 = require("./g"); // { default: 0 }
+//// [main4.cjs]
+exports.x = require("./g");
 //// [dummy.js]
 export {}; // Silly test harness
 
@@ -217,5 +222,7 @@ export {};
 export {};
 //// [main3.d.cts]
 export {};
+//// [main4.d.cts]
+export const x: typeof import("./g");
 //// [dummy.d.ts]
 export {};
diff --git a/tests/baselines/reference/modulePreserve4.symbols b/tests/baselines/reference/modulePreserve4.symbols
index 05a7671af0235..e9b29a585d546 100644
--- a/tests/baselines/reference/modulePreserve4.symbols
+++ b/tests/baselines/reference/modulePreserve4.symbols
@@ -256,6 +256,14 @@ const g2 = require("./g"); // { default: 0 }
 >require : Symbol(require)
 >"./g" : Symbol(g1, Decl(g.js, 0, 0))
 
+=== /main4.cjs ===
+exports.x = require("./g");
+>exports.x : Symbol(x, Decl(main4.cjs, 0, 0))
+>exports : Symbol(x, Decl(main4.cjs, 0, 0))
+>x : Symbol(x, Decl(main4.cjs, 0, 0))
+>require : Symbol(require)
+>"./g" : Symbol("/g", Decl(g.js, 0, 0))
+
 === /dummy.ts ===
 
 export {}; // Silly test harness
diff --git a/tests/baselines/reference/modulePreserve4.types b/tests/baselines/reference/modulePreserve4.types
index 32e418141de20..9d01ddbfce003 100644
--- a/tests/baselines/reference/modulePreserve4.types
+++ b/tests/baselines/reference/modulePreserve4.types
@@ -200,8 +200,8 @@ d3.default();
 >        : ^^^^^^^^^^
 
 import e1 from "./e.mjs"; // 0
->e1 : 0
->   : ^
+>e1 : any
+>   : ^^^
 
 import e2 = require("./e.mjs"); // 0
 >e2 : 0
@@ -313,8 +313,8 @@ import d2 = require("./d"); // [Function: default]
 >   : ^^^^^^^^^^
 
 import e1 from "./e.mjs"; // 0
->e1 : 0
->   : ^
+>e1 : any
+>   : ^^^
 
 import e2 = require("./e.mjs"); // 0
 >e2 : 0
@@ -441,6 +441,23 @@ const g2 = require("./g"); // { default: 0 }
 >"./g" : "./g"
 >      : ^^^^^
 
+=== /main4.cjs ===
+exports.x = require("./g");
+>exports.x = require("./g") : typeof import("/g")
+>                           : ^^^^^^^^^^^^^^^^^^^
+>exports.x : typeof import("/g")
+>          : ^^^^^^^^^^^^^^^^^^^
+>exports : typeof import("/main4")
+>        : ^^^^^^^^^^^^^^^^^^^^^^^
+>x : typeof import("/g")
+>  : ^^^^^^^^^^^^^^^^^^^
+>require("./g") : typeof import("/g")
+>               : ^^^^^^^^^^^^^^^^^^^
+>require : any
+>        : ^^^
+>"./g" : "./g"
+>      : ^^^^^
+
 === /dummy.ts ===
 
 export {}; // Silly test harness
diff --git a/tests/baselines/reference/moduleResolutionAsTypeReferenceDirective.trace.json b/tests/baselines/reference/moduleResolutionAsTypeReferenceDirective.trace.json
index f52cf0d160e70..fbb8abbe1f25f 100644
--- a/tests/baselines/reference/moduleResolutionAsTypeReferenceDirective.trace.json
+++ b/tests/baselines/reference/moduleResolutionAsTypeReferenceDirective.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'phaser' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'phaser' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -13,6 +14,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/typings/phaser/types/phaser.d.ts', result '/typings/phaser/types/phaser.d.ts'.",
     "======== Module name 'phaser' was successfully resolved to '/typings/phaser/types/phaser.d.ts' with Package ID 'phaser/types/phaser.d.ts@1.2.3'. ========",
+    "File '/typings/phaser/types/package.json' does not exist.",
+    "File '/typings/phaser/package.json' exists according to earlier cached lookups.",
     "======== Resolving type reference directive 'phaser', containing file '/__inferred type names__.ts', root directory '/typings'. ========",
     "Resolving with primary search path '/typings'.",
     "File '/typings/phaser.d.ts' does not exist.",
@@ -22,6 +25,8 @@
     "File '/typings/phaser/types/phaser.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/typings/phaser/types/phaser.d.ts', result '/typings/phaser/types/phaser.d.ts'.",
     "======== Type reference directive 'phaser' was successfully resolved to '/typings/phaser/types/phaser.d.ts' with Package ID 'phaser/types/phaser.d.ts@1.2.3', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +96,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveAmbient.trace.json b/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveAmbient.trace.json
index f52cf0d160e70..fbb8abbe1f25f 100644
--- a/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveAmbient.trace.json
+++ b/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveAmbient.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'phaser' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'phaser' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -13,6 +14,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/typings/phaser/types/phaser.d.ts', result '/typings/phaser/types/phaser.d.ts'.",
     "======== Module name 'phaser' was successfully resolved to '/typings/phaser/types/phaser.d.ts' with Package ID 'phaser/types/phaser.d.ts@1.2.3'. ========",
+    "File '/typings/phaser/types/package.json' does not exist.",
+    "File '/typings/phaser/package.json' exists according to earlier cached lookups.",
     "======== Resolving type reference directive 'phaser', containing file '/__inferred type names__.ts', root directory '/typings'. ========",
     "Resolving with primary search path '/typings'.",
     "File '/typings/phaser.d.ts' does not exist.",
@@ -22,6 +25,8 @@
     "File '/typings/phaser/types/phaser.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/typings/phaser/types/phaser.d.ts', result '/typings/phaser/types/phaser.d.ts'.",
     "======== Type reference directive 'phaser' was successfully resolved to '/typings/phaser/types/phaser.d.ts' with Package ID 'phaser/types/phaser.d.ts@1.2.3', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +96,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveScoped.trace.json b/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveScoped.trace.json
index ed79e4de039ff..c62975267eaf3 100644
--- a/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveScoped.trace.json
+++ b/tests/baselines/reference/moduleResolutionAsTypeReferenceDirectiveScoped.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module '@scoped/typescache' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module '@scoped/typescache' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +73,21 @@
     "File '/a/node_modules/@types/mangled__attypescache/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/node_modules/@types/mangled__attypescache/index.d.ts', result '/a/node_modules/@types/mangled__attypescache/index.d.ts'.",
     "======== Module name '@mangled/attypescache' was successfully resolved to '/a/node_modules/@types/mangled__attypescache/index.d.ts'. ========",
+    "File '/a/types/@scoped/typescache/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/types/@scoped/package.json' does not exist.",
+    "File '/a/types/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/node_modules/@scoped/nodemodulescache/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/node_modules/@scoped/package.json' does not exist.",
+    "File '/a/node_modules/package.json' does not exist.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/node_modules/@types/mangled__attypescache/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/node_modules/@types/package.json' does not exist.",
+    "File '/a/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'dummy', containing file '/__inferred type names__.ts', root directory '/a/types,/a/node_modules,/a/node_modules/@types'. ========",
     "Resolving with primary search path '/a/types, /a/node_modules, /a/node_modules/@types'.",
     "File '/a/types/dummy.d.ts' does not exist.",
@@ -79,6 +95,12 @@
     "File '/a/types/dummy/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/types/dummy/index.d.ts', result '/a/types/dummy/index.d.ts'.",
     "======== Type reference directive 'dummy' was successfully resolved to '/a/types/dummy/index.d.ts', primary: true. ========",
+    "File '/a/types/dummy/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/types/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +111,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -99,6 +123,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -109,6 +135,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,6 +147,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,6 +159,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -138,5 +170,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionPackageIdWithRelativeAndAbsolutePath.trace.json b/tests/baselines/reference/moduleResolutionPackageIdWithRelativeAndAbsolutePath.trace.json
index 60d21c691f2a4..3127ed46095ac 100644
--- a/tests/baselines/reference/moduleResolutionPackageIdWithRelativeAndAbsolutePath.trace.json
+++ b/tests/baselines/reference/moduleResolutionPackageIdWithRelativeAndAbsolutePath.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/project/src/package.json' does not exist.",
+    "File '/project/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'anotherLib' from '/project/src/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/project', using this value to resolve non-relative module name 'anotherLib'.",
@@ -33,6 +36,10 @@
     "File '/shared/lib/app.tsx' does not exist.",
     "File '/shared/lib/app.d.ts' exists - use it as a name resolution result.",
     "======== Module name '@shared/lib/app' was successfully resolved to '/shared/lib/app.d.ts'. ========",
+    "File '/project/node_modules/anotherLib/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/node_modules/package.json' does not exist.",
+    "File '/project/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'troublesome-lib/lib/Compactable' from '/project/node_modules/anotherLib/index.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/project', using this value to resolve non-relative module name 'troublesome-lib/lib/Compactable'.",
@@ -51,6 +58,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/project/node_modules/troublesome-lib/lib/Compactable.d.ts', result '/project/node_modules/troublesome-lib/lib/Compactable.d.ts'.",
     "======== Module name 'troublesome-lib/lib/Compactable' was successfully resolved to '/project/node_modules/troublesome-lib/lib/Compactable.d.ts' with Package ID 'troublesome-lib/lib/Compactable.d.ts@1.17.1'. ========",
+    "File '/project/node_modules/troublesome-lib/lib/package.json' does not exist.",
+    "File '/project/node_modules/troublesome-lib/package.json' exists according to earlier cached lookups.",
     "======== Resolving module './Option' from '/project/node_modules/troublesome-lib/lib/Compactable.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/project/node_modules/troublesome-lib/lib/Option', target file types: TypeScript, Declaration.",
@@ -59,6 +68,11 @@
     "File '/project/node_modules/troublesome-lib/lib/Option.d.ts' exists - use it as a name resolution result.",
     "File '/project/node_modules/troublesome-lib/package.json' exists according to earlier cached lookups.",
     "======== Module name './Option' was successfully resolved to '/project/node_modules/troublesome-lib/lib/Option.d.ts' with Package ID 'troublesome-lib/lib/Option.d.ts@1.17.1'. ========",
+    "File '/project/node_modules/troublesome-lib/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/project/node_modules/troublesome-lib/package.json' exists according to earlier cached lookups.",
+    "File '/shared/lib/package.json' does not exist.",
+    "File '/shared/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'troublesome-lib/lib/Option' from '/shared/lib/app.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/project', using this value to resolve non-relative module name 'troublesome-lib/lib/Option'.",
@@ -77,6 +91,10 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/shared/node_modules/troublesome-lib/lib/Option.d.ts', result '/shared/node_modules/troublesome-lib/lib/Option.d.ts'.",
     "======== Module name 'troublesome-lib/lib/Option' was successfully resolved to '/shared/node_modules/troublesome-lib/lib/Option.d.ts' with Package ID 'troublesome-lib/lib/Option.d.ts@1.17.1'. ========",
+    "File '/shared/node_modules/troublesome-lib/lib/package.json' does not exist.",
+    "File '/shared/node_modules/troublesome-lib/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/project/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +107,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/project/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -101,6 +121,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/project/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -113,6 +135,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/project/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -125,6 +149,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/project/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -137,6 +163,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/project/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -148,5 +176,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions.trace.json
index b2f074edc2056..e7c0c22df7f3c 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions.trace.json
@@ -1,15 +1,25 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a' from '/src/b.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/src/a', target file types: TypeScript, Declaration.",
     "File '/src/a.ts' exists - use it as a name resolution result.",
     "======== Module name './a' was successfully resolved to '/src/a.ts'. ========",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './a.js' from '/src/d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/src/a.js', target file types: TypeScript, Declaration.",
     "File name '/src/a.js' has a '.js' extension - stripping it.",
     "File '/src/a.ts' exists - use it as a name resolution result.",
     "======== Module name './a.js' was successfully resolved to '/src/a.ts'. ========",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './jquery.js' from '/src/jquery_user_1.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/src/jquery.js', target file types: TypeScript, Declaration.",
@@ -18,6 +28,8 @@
     "File '/src/jquery.tsx' does not exist.",
     "File '/src/jquery.d.ts' exists - use it as a name resolution result.",
     "======== Module name './jquery.js' was successfully resolved to '/src/jquery.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +43,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +58,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +73,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +88,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +103,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +117,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_notSupported.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_notSupported.trace.json
index d019eb14cb9f1..bff9f94ba12b6 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_notSupported.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_notSupported.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './tsx' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/tsx', target file types: TypeScript, Declaration.",
@@ -26,6 +27,8 @@
     "Loading module as file / folder, candidate module location '/js', target file types: JavaScript.",
     "File '/js.js' exists - use it as a name resolution result.",
     "======== Module name './js' was successfully resolved to '/js.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +42,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +57,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,6 +72,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +87,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -91,6 +102,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -103,5 +116,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_notSupported2.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_notSupported2.trace.json
index 2d98099a28f19..44d0ab3175945 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_notSupported2.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_notSupported2.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './jsx' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/jsx', target file types: TypeScript, Declaration.",
@@ -10,6 +11,8 @@
     "File '/jsx.js' does not exist.",
     "File '/jsx.jsx' exists - use it as a name resolution result.",
     "======== Module name './jsx' was successfully resolved to '/jsx.jsx'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -23,6 +26,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +41,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +56,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +71,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,6 +86,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,5 +100,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_notSupported3.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_notSupported3.trace.json
index 2d98099a28f19..44d0ab3175945 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_notSupported3.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_notSupported3.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './jsx' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/jsx', target file types: TypeScript, Declaration.",
@@ -10,6 +11,8 @@
     "File '/jsx.js' does not exist.",
     "File '/jsx.jsx' exists - use it as a name resolution result.",
     "======== Module name './jsx' was successfully resolved to '/jsx.jsx'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -23,6 +26,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +41,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +56,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +71,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,6 +86,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,5 +100,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_unexpected.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_unexpected.trace.json
index 3a1310358ecb5..e17b43c5c66b3 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_unexpected.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_unexpected.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'normalize.css' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'normalize.css' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +70,8 @@
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "File name '/node_modules/@types/normalize.css' has a '.css' extension - stripping it.",
     "======== Module name 'normalize.css' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +84,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +98,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,6 +112,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -117,6 +126,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,6 +140,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -140,5 +153,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_unexpected2.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_unexpected2.trace.json
index 824c82941bcc0..0aaf68af6cb44 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_unexpected2.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_unexpected2.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +63,8 @@
     "File '/node_modules/foo/index.d.ts' does not exist.",
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +77,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,6 +91,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +105,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,6 +119,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +133,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -133,5 +146,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_withAmbientPresent.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_withAmbientPresent.trace.json
index 0137a3b261791..a9ab2e9baa0cd 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_withAmbientPresent.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_withAmbientPresent.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'js' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'js' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +21,8 @@
     "File '/node_modules/js/index.js' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/js/index.js', result '/node_modules/js/index.js'.",
     "======== Module name 'js' was successfully resolved to '/node_modules/js/index.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +35,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +63,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +77,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +91,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,5 +104,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithExtensions_withPaths.trace.json b/tests/baselines/reference/moduleResolutionWithExtensions_withPaths.trace.json
index f576bfff8635a..d354aafc93266 100644
--- a/tests/baselines/reference/moduleResolutionWithExtensions_withPaths.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithExtensions_withPaths.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo/test.js' from '/test.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'foo/test.js'.",
@@ -41,6 +43,12 @@
     "File '/relative.tsx' does not exist.",
     "File '/relative.d.ts' exists - use it as a name resolution result.",
     "======== Module name './relative' was successfully resolved to '/relative.d.ts'. ========",
+    "File '/node_modules/foo/lib/package.json' does not exist.",
+    "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +58,8 @@
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +69,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +80,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -77,6 +91,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,6 +102,8 @@
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,6 +113,8 @@
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -104,6 +124,8 @@
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -113,6 +135,8 @@
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +146,8 @@
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -131,6 +157,8 @@
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -140,6 +168,8 @@
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -149,6 +179,8 @@
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -158,6 +190,8 @@
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -167,6 +201,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -176,6 +212,8 @@
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -185,6 +223,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -193,5 +233,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithRequire.trace.json b/tests/baselines/reference/moduleResolutionWithRequire.trace.json
index 9092829302e64..e0c394afe7d4d 100644
--- a/tests/baselines/reference/moduleResolutionWithRequire.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithRequire.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +15,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +30,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +45,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +60,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +75,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,5 +89,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithRequireAndImport.trace.json b/tests/baselines/reference/moduleResolutionWithRequireAndImport.trace.json
index 43aa769eac31c..df392e07434f3 100644
--- a/tests/baselines/reference/moduleResolutionWithRequireAndImport.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithRequireAndImport.trace.json
@@ -1,9 +1,13 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './other' from '/index.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/other', target file types: TypeScript, Declaration.",
     "File '/other.ts' exists - use it as a name resolution result.",
     "======== Module name './other' was successfully resolved to '/other.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -17,6 +21,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +36,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +51,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +66,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +81,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +95,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_empty.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_empty.trace.json
index 8f7f02beaea36..05d60eaa52b2d 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_empty.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_empty.trace.json
@@ -1,9 +1,13 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
     "File '/foo.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +18,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +30,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +42,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +54,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +66,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,5 +77,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_notSpecified.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_notSpecified.trace.json
index 8f7f02beaea36..05d60eaa52b2d 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_notSpecified.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_notSpecified.trace.json
@@ -1,9 +1,13 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
     "File '/foo.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +18,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +30,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +42,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +54,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +66,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,5 +77,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one.trace.json
index 8946291f8d030..3861548e2cf86 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one.trace.json
@@ -1,9 +1,14 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
     "File '/foo.ios.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo.ios.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +19,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +31,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +43,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +55,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +67,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,5 +78,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_oneBlank.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_oneBlank.trace.json
index 8f7f02beaea36..05d60eaa52b2d 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_oneBlank.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_oneBlank.trace.json
@@ -1,9 +1,13 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
     "File '/foo.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +18,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +30,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +42,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +54,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +66,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,5 +77,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_oneNotFound.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_oneNotFound.trace.json
index 3d5a40fb3f02c..7e270d24b8e58 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_oneNotFound.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_oneNotFound.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
@@ -11,6 +12,9 @@
     "File '/foo.ios.jsx' does not exist.",
     "Directory '/foo' does not exist, skipping all lookups in it.",
     "======== Module name './foo' was not resolved. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -21,6 +25,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,5 +84,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_dirModuleWithIndex.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_dirModuleWithIndex.trace.json
index 6fd66a048fdcc..cb19463f299cc 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_dirModuleWithIndex.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_dirModuleWithIndex.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
@@ -8,6 +9,12 @@
     "File '/foo/package.json' does not exist.",
     "File '/foo/index.ios.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo/index.ios.ts'. ========",
+    "File '/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -18,6 +25,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,5 +84,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule.trace.json
index 963e9da2855f1..510d1b6e78d08 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'some-library' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'some-library' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +13,11 @@
     "File '/node_modules/some-library/index.ios.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/some-library/index.ios.d.ts', result '/node_modules/some-library/index.ios.d.ts'.",
     "======== Module name 'some-library' was successfully resolved to '/node_modules/some-library/index.ios.d.ts'. ========",
+    "File '/node_modules/some-library/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -21,6 +27,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +38,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +49,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +60,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +71,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,5 +81,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModulePath.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModulePath.trace.json
index a2b9fe5bb60a0..a859834fed75f 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModulePath.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModulePath.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'some-library/foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'some-library/foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -9,6 +10,11 @@
     "File '/node_modules/some-library/foo.ios.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/some-library/foo.ios.d.ts', result '/node_modules/some-library/foo.ios.d.ts'.",
     "======== Module name 'some-library/foo' was successfully resolved to '/node_modules/some-library/foo.ios.d.ts'. ========",
+    "File '/node_modules/some-library/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -18,6 +24,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -27,6 +35,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +46,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +57,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +68,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,5 +78,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule_withPaths.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule_withPaths.trace.json
index 7ef2a6e23a1d2..0c7679fb1bb77 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule_withPaths.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalModule_withPaths.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'some-library' from '/test.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'some-library'.",
@@ -42,6 +43,12 @@
     "File '/node_modules/some-library/package.json' does not exist according to earlier cached lookups.",
     "Resolving real path for '/node_modules/some-library/lib/index.ios.d.ts', result '/node_modules/some-library/lib/index.ios.d.ts'.",
     "======== Module name 'some-library/index.js' was successfully resolved to '/node_modules/some-library/lib/index.ios.d.ts'. ========",
+    "File '/node_modules/some-library/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/some-library/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +58,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +69,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +80,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +91,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +102,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +112,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalTSModule.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalTSModule.trace.json
index 0290900258f6e..8be1462a21e41 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalTSModule.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_externalTSModule.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'some-library' from '/test.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'some-library' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -10,6 +11,11 @@
     "File '/node_modules/some-library/index.ios.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/some-library/index.ios.ts', result '/node_modules/some-library/index.ios.ts'.",
     "======== Module name 'some-library' was successfully resolved to '/node_modules/some-library/index.ios.ts'. ========",
+    "File '/node_modules/some-library/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +25,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +36,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +47,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +58,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +69,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,5 +79,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsModule.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsModule.trace.json
index d0821b52bead3..f69f28f86ccc1 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsModule.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsModule.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo.js' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo.js', target file types: TypeScript, Declaration.",
@@ -14,6 +15,10 @@
     "File name '/foo.js' has a '.js' extension - stripping it.",
     "File '/foo.ios.js' exists - use it as a name resolution result.",
     "======== Module name './foo.js' was successfully resolved to '/foo.ios.js'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +29,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +41,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +53,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +65,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +77,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -73,5 +88,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsonModule.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsonModule.trace.json
index 469f7a6c46361..099a025b2f62c 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsonModule.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_one_jsonModule.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo.json' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo.json', target file types: TypeScript, Declaration.",
@@ -12,6 +13,8 @@
     "File name '/foo.json' has a '.json' extension - stripping it.",
     "File '/foo.ios.json' exists - use it as a name resolution result.",
     "======== Module name './foo.json' was successfully resolved to '/foo.ios.json'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +25,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,5 +84,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank1.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank1.trace.json
index c61525f6f021a..5ee5b1320aa43 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank1.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank1.trace.json
@@ -1,9 +1,15 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
     "File '/foo-ios.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo-ios.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +20,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -24,6 +32,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +44,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +56,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,5 +79,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank2.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank2.trace.json
index b2211dfd75609..57170d60aaa16 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank2.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank2.trace.json
@@ -1,10 +1,15 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
     "File '/foo-ios.ts' does not exist.",
     "File '/foo__native.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo__native.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -15,6 +20,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +32,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -35,6 +44,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +56,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,5 +79,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank3.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank3.trace.json
index 86eb088322240..034d49b589df7 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank3.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank3.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
@@ -6,6 +7,9 @@
     "File '/foo__native.ts' does not exist.",
     "File '/foo.ts' exists - use it as a name resolution result.",
     "======== Module name './foo' was successfully resolved to '/foo.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -16,6 +20,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +32,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +44,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +56,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,5 +79,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank4.trace.json b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank4.trace.json
index 355c103ae4fa9..e216e8592297d 100644
--- a/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank4.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSuffixes_threeLastIsBlank4.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './foo' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location '/foo', target file types: TypeScript, Declaration.",
@@ -21,6 +22,8 @@
     "File '/foo.jsx' does not exist.",
     "Directory '/foo' does not exist, skipping all lookups in it.",
     "======== Module name './foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +34,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +46,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +58,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +70,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +82,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,5 +93,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSymlinks.trace.json b/tests/baselines/reference/moduleResolutionWithSymlinks.trace.json
index d717a732e0266..b2724f8dd2f20 100644
--- a/tests/baselines/reference/moduleResolutionWithSymlinks.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSymlinks.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module './library-a' from '/src/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/src/library-a', target file types: TypeScript, Declaration.",
@@ -17,6 +19,12 @@
     "File '/src/library-b/package.json' does not exist.",
     "File '/src/library-b/index.ts' exists - use it as a name resolution result.",
     "======== Module name './library-b' was successfully resolved to '/src/library-b/index.ts'. ========",
+    "File '/src/library-a/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/library-b/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'library-a' from '/src/library-b/index.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'library-a' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +36,8 @@
     "File '/src/library-b/node_modules/library-a/index.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/src/library-b/node_modules/library-a/index.ts', result '/src/library-a/index.ts'.",
     "======== Module name 'library-a' was successfully resolved to '/src/library-a/index.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +51,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +66,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +81,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,6 +96,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +111,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,5 +125,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSymlinks_notInNodeModules.trace.json b/tests/baselines/reference/moduleResolutionWithSymlinks_notInNodeModules.trace.json
index ec59557b23985..b69d29aed20e5 100644
--- a/tests/baselines/reference/moduleResolutionWithSymlinks_notInNodeModules.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSymlinks_notInNodeModules.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module './shared/abc' from '/src/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/src/shared/abc', target file types: TypeScript, Declaration.",
@@ -9,6 +11,14 @@
     "Loading module as file / folder, candidate module location '/src/shared2/abc', target file types: TypeScript, Declaration.",
     "File '/src/shared2/abc.ts' exists - use it as a name resolution result.",
     "======== Module name './shared2/abc' was successfully resolved to '/src/shared2/abc.ts'. ========",
+    "File '/src/shared/package.json' does not exist.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/shared2/package.json' does not exist.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +32,8 @@
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -35,6 +47,8 @@
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -48,6 +62,8 @@
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +77,8 @@
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +92,8 @@
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -86,5 +106,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSymlinks_preserveSymlinks.trace.json b/tests/baselines/reference/moduleResolutionWithSymlinks_preserveSymlinks.trace.json
index 5d604e79fbf97..1eabfa9938ee6 100644
--- a/tests/baselines/reference/moduleResolutionWithSymlinks_preserveSymlinks.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSymlinks_preserveSymlinks.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/app/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'linked', containing file '/app/app.ts', root directory '/.src/node_modules/@types,/node_modules/@types'. ========",
     "Resolving with primary search path '/.src/node_modules/@types, /node_modules/@types'.",
     "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
@@ -9,6 +11,10 @@
     "File '/app/node_modules/linked.d.ts' does not exist.",
     "File '/app/node_modules/linked/index.d.ts' exists - use it as a name resolution result.",
     "======== Type reference directive 'linked' was successfully resolved to '/app/node_modules/linked/index.d.ts', primary: false. ========",
+    "File '/app/node_modules/linked/package.json' does not exist according to earlier cached lookups.",
+    "File '/app/node_modules/package.json' does not exist.",
+    "File '/app/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'real' from '/app/node_modules/linked/index.d.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'real' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +28,10 @@
     "File '/app/node_modules/real/index.tsx' does not exist.",
     "File '/app/node_modules/real/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'real' was successfully resolved to '/app/node_modules/real/index.d.ts'. ========",
+    "File '/app/node_modules/real/package.json' does not exist according to earlier cached lookups.",
+    "File '/app/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/app/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'linked' from '/app/app.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'linked' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +56,10 @@
     "File '/app/node_modules/linked2/index.tsx' does not exist.",
     "File '/app/node_modules/linked2/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'linked2' was successfully resolved to '/app/node_modules/linked2/index.d.ts'. ========",
+    "File '/app/node_modules/linked2/package.json' does not exist according to earlier cached lookups.",
+    "File '/app/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/app/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'real' from '/app/node_modules/linked2/index.d.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'real' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +73,8 @@
     "File '/app/node_modules/real/index.tsx' does not exist.",
     "File '/app/node_modules/real/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'real' was successfully resolved to '/app/node_modules/real/index.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +88,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +103,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +118,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -111,6 +133,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -124,6 +148,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -136,5 +162,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSymlinks_referenceTypes.trace.json b/tests/baselines/reference/moduleResolutionWithSymlinks_referenceTypes.trace.json
index 74f2d01acf798..42be1b880d500 100644
--- a/tests/baselines/reference/moduleResolutionWithSymlinks_referenceTypes.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSymlinks_referenceTypes.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'library-a', containing file '/app.ts', root directory ''. ========",
     "Root directory cannot be determined, skipping primary search paths.",
     "Looking up in 'node_modules' folder, initial location '/'.",
@@ -19,6 +20,14 @@
     "File '/node_modules/@types/library-b/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/library-b/index.d.ts', result '/node_modules/@types/library-b/index.d.ts'.",
     "======== Type reference directive 'library-b' was successfully resolved to '/node_modules/@types/library-b/index.d.ts', primary: false. ========",
+    "File '/node_modules/@types/library-a/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/library-b/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'library-a', containing file '/node_modules/@types/library-b/index.d.ts', root directory ''. ========",
     "Root directory cannot be determined, skipping primary search paths.",
     "Looking up in 'node_modules' folder, initial location '/node_modules/@types/library-b'.",
@@ -29,6 +38,8 @@
     "File '/node_modules/@types/library-b/node_modules/@types/library-a/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/library-b/node_modules/@types/library-a/index.d.ts', result '/node_modules/@types/library-a/index.d.ts'.",
     "======== Type reference directive 'library-a' was successfully resolved to '/node_modules/@types/library-a/index.d.ts', primary: false. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +49,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -47,6 +60,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +70,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +81,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +91,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,5 +101,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolutionWithSymlinks_withOutDir.trace.json b/tests/baselines/reference/moduleResolutionWithSymlinks_withOutDir.trace.json
index d717a732e0266..b2724f8dd2f20 100644
--- a/tests/baselines/reference/moduleResolutionWithSymlinks_withOutDir.trace.json
+++ b/tests/baselines/reference/moduleResolutionWithSymlinks_withOutDir.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module './library-a' from '/src/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/src/library-a', target file types: TypeScript, Declaration.",
@@ -17,6 +19,12 @@
     "File '/src/library-b/package.json' does not exist.",
     "File '/src/library-b/index.ts' exists - use it as a name resolution result.",
     "======== Module name './library-b' was successfully resolved to '/src/library-b/index.ts'. ========",
+    "File '/src/library-a/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/library-b/package.json' does not exist according to earlier cached lookups.",
+    "File '/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'library-a' from '/src/library-b/index.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'library-a' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +36,8 @@
     "File '/src/library-b/node_modules/library-a/index.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/src/library-b/node_modules/library-a/index.ts', result '/src/library-a/index.ts'.",
     "======== Module name 'library-a' was successfully resolved to '/src/library-a/index.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +51,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +66,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +81,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,6 +96,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +111,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,5 +125,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot.trace.json b/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot.trace.json
index c93269a91d01b..b0644ca6d464e 100644
--- a/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot.trace.json
+++ b/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/bar' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo/bar' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -13,6 +14,9 @@
     "File '/node_modules/foo/bar/types.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/foo/bar/types.d.ts', result '/node_modules/foo/bar/types.d.ts'.",
     "======== Module name 'foo/bar' was successfully resolved to '/node_modules/foo/bar/types.d.ts'. ========",
+    "File '/node_modules/foo/bar/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +29,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +43,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +57,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -73,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,5 +98,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot_fakeScopedPackage.trace.json b/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot_fakeScopedPackage.trace.json
index 318f6634cebd5..cf89cd38dd6fd 100644
--- a/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot_fakeScopedPackage.trace.json
+++ b/tests/baselines/reference/moduleResolution_packageJson_notAtPackageRoot_fakeScopedPackage.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/@bar' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo/@bar' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -13,6 +14,9 @@
     "File '/node_modules/foo/@bar/types.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/foo/@bar/types.d.ts', result '/node_modules/foo/@bar/types.d.ts'.",
     "======== Module name 'foo/@bar' was successfully resolved to '/node_modules/foo/@bar/types.d.ts'. ========",
+    "File '/node_modules/foo/@bar/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +29,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +43,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +57,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -73,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,5 +98,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolution_packageJson_scopedPackage.trace.json b/tests/baselines/reference/moduleResolution_packageJson_scopedPackage.trace.json
index 4d9fcc026a3f9..ba95e72fe0682 100644
--- a/tests/baselines/reference/moduleResolution_packageJson_scopedPackage.trace.json
+++ b/tests/baselines/reference/moduleResolution_packageJson_scopedPackage.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module '@foo/bar' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module '@foo/bar' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -13,6 +14,9 @@
     "File '/node_modules/@foo/bar/types.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@foo/bar/types.d.ts', result '/node_modules/@foo/bar/types.d.ts'.",
     "======== Module name '@foo/bar' was successfully resolved to '/node_modules/@foo/bar/types.d.ts'. ========",
+    "File '/node_modules/@foo/bar/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +29,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +43,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +57,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -73,6 +85,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,5 +98,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot.trace.json b/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot.trace.json
index 83436d6f28bb3..6c88f7d936280 100644
--- a/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot.trace.json
+++ b/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/bar' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo/bar' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +61,8 @@
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "Resolving real path for '/node_modules/foo/bar/index.js', result '/node_modules/foo/bar/index.js'.",
     "======== Module name 'foo/bar' was successfully resolved to '/node_modules/foo/bar/index.js' with Package ID 'foo/bar/index.js@1.2.3'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +75,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +89,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +103,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +117,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -120,6 +131,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -131,5 +144,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_fakeScopedPackage.trace.json b/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_fakeScopedPackage.trace.json
index 6595986f256c1..12a0d4a5781bf 100644
--- a/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_fakeScopedPackage.trace.json
+++ b/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_fakeScopedPackage.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/@bar' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo/@bar' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +61,8 @@
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "Resolving real path for '/node_modules/foo/@bar/index.js', result '/node_modules/foo/@bar/index.js'.",
     "======== Module name 'foo/@bar' was successfully resolved to '/node_modules/foo/@bar/index.js' with Package ID 'foo/@bar/index.js@1.2.3'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +75,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +89,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +103,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +117,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -120,6 +131,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -131,5 +144,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_mainFieldInSubDirectory.trace.json b/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_mainFieldInSubDirectory.trace.json
index 38be533dde0a8..0f299bf7374a6 100644
--- a/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_mainFieldInSubDirectory.trace.json
+++ b/tests/baselines/reference/moduleResolution_packageJson_yesAtPackageRoot_mainFieldInSubDirectory.trace.json
@@ -1,9 +1,12 @@
 [
+    "File '/node_modules/foo/src/package.json' does not exist.",
+    "Found 'package.json' at '/node_modules/foo/package.json'.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/index.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/foo/package.json'.",
+    "File '/node_modules/foo/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/foo.ts' does not exist.",
     "File '/node_modules/foo.tsx' does not exist.",
     "File '/node_modules/foo.d.ts' does not exist.",
@@ -18,6 +21,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/node_modules/foo/src/index.d.ts', result '/node_modules/foo/src/index.d.ts'.",
     "======== Module name 'foo' was successfully resolved to '/node_modules/foo/src/index.d.ts' with Package ID 'foo/src/index.d.ts@1.2.3'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +35,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +63,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +77,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +91,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,5 +104,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=bundler).trace.json b/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=bundler).trace.json
index a6d17c4961116..08fb235a099a7 100644
--- a/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=bundler).trace.json
+++ b/tests/baselines/reference/nestedPackageJsonRedirect(moduleresolution=bundler).trace.json
@@ -1,12 +1,15 @@
 [
+    "File '/node_modules/@restart/hooks/esm/package.json' does not exist.",
+    "Found 'package.json' at '/node_modules/@restart/hooks/package.json'.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@restart/hooks/useMergedRefs' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
-    "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "Resolving in CJS mode with conditions 'require', 'types'.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module '@restart/hooks/useMergedRefs' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "Found 'package.json' at '/node_modules/@restart/hooks/useMergedRefs/package.json'.",
-    "Found 'package.json' at '/node_modules/@restart/hooks/package.json'.",
+    "File '/node_modules/@restart/hooks/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/@restart/hooks/useMergedRefs.ts' does not exist.",
     "File '/node_modules/@restart/hooks/useMergedRefs.tsx' does not exist.",
     "File '/node_modules/@restart/hooks/useMergedRefs.d.ts' does not exist.",
@@ -16,6 +19,8 @@
     "File '/node_modules/@restart/hooks/esm/useMergedRefs.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@restart/hooks/esm/useMergedRefs.d.ts', result '/node_modules/@restart/hooks/esm/useMergedRefs.d.ts'.",
     "======== Module name '@restart/hooks/useMergedRefs' was successfully resolved to '/node_modules/@restart/hooks/esm/useMergedRefs.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -28,6 +33,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -40,6 +47,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +75,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,6 +89,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,5 +102,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/node10AlternateResult_noResolution.trace.json b/tests/baselines/reference/node10AlternateResult_noResolution.trace.json
index e008fb57d8a98..d54cc9c9c1c8b 100644
--- a/tests/baselines/reference/node10AlternateResult_noResolution.trace.json
+++ b/tests/baselines/reference/node10AlternateResult_noResolution.trace.json
@@ -1,9 +1,11 @@
 [
+    "Found 'package.json' at '/node_modules/pkg/package.json'.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'pkg' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'pkg' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/pkg/package.json'.",
+    "File '/node_modules/pkg/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/pkg.ts' does not exist.",
     "File '/node_modules/pkg.tsx' does not exist.",
     "File '/node_modules/pkg.d.ts' does not exist.",
@@ -34,6 +36,8 @@
     "File '/node_modules/pkg/definitely-not-index.d.ts' exists - use it as a name resolution result.",
     "'package.json' does not have a 'peerDependencies' field.",
     "======== Module name 'pkg' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +50,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +78,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +92,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,6 +106,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,5 +119,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/node10Alternateresult_noTypes.trace.json b/tests/baselines/reference/node10Alternateresult_noTypes.trace.json
index 3082c74ca526d..6edf8e3a9579d 100644
--- a/tests/baselines/reference/node10Alternateresult_noTypes.trace.json
+++ b/tests/baselines/reference/node10Alternateresult_noTypes.trace.json
@@ -1,9 +1,11 @@
 [
+    "Found 'package.json' at '/node_modules/pkg/package.json'.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'pkg' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'pkg' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/pkg/package.json'.",
+    "File '/node_modules/pkg/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/pkg.ts' does not exist.",
     "File '/node_modules/pkg.tsx' does not exist.",
     "File '/node_modules/pkg.d.ts' does not exist.",
@@ -48,6 +50,8 @@
     "File '/node_modules/pkg/definitely-not-index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/pkg/untyped.js', result '/node_modules/pkg/untyped.js'.",
     "======== Module name 'pkg' was successfully resolved to '/node_modules/pkg/untyped.js' with Package ID 'pkg/untyped.js@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +78,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +92,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +106,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +120,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,5 +133,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/node10IsNode_node.trace.json b/tests/baselines/reference/node10IsNode_node.trace.json
index e95e7fef4cdfa..afd7e65960730 100644
--- a/tests/baselines/reference/node10IsNode_node.trace.json
+++ b/tests/baselines/reference/node10IsNode_node.trace.json
@@ -1,9 +1,12 @@
 [
+    "Found 'package.json' at '/node_modules/fancy-lib/package.json'.",
+    "File '/node_modules/fancy-lib/package.json' exists according to earlier cached lookups.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'fancy-lib' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'fancy-lib' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/fancy-lib/package.json'.",
+    "File '/node_modules/fancy-lib/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/fancy-lib.ts' does not exist.",
     "File '/node_modules/fancy-lib.tsx' does not exist.",
     "File '/node_modules/fancy-lib.d.ts' does not exist.",
@@ -18,6 +21,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/node_modules/fancy-lib/index.d.ts', result '/node_modules/fancy-lib/index.d.ts'.",
     "======== Module name 'fancy-lib' was successfully resolved to '/node_modules/fancy-lib/index.d.ts' with Package ID 'fancy-lib/index.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +35,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +63,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +77,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +91,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,5 +104,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/node10IsNode_node10.trace.json b/tests/baselines/reference/node10IsNode_node10.trace.json
index e95e7fef4cdfa..afd7e65960730 100644
--- a/tests/baselines/reference/node10IsNode_node10.trace.json
+++ b/tests/baselines/reference/node10IsNode_node10.trace.json
@@ -1,9 +1,12 @@
 [
+    "Found 'package.json' at '/node_modules/fancy-lib/package.json'.",
+    "File '/node_modules/fancy-lib/package.json' exists according to earlier cached lookups.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'fancy-lib' from '/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module 'fancy-lib' from 'node_modules' folder, target file types: TypeScript, Declaration.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/fancy-lib/package.json'.",
+    "File '/node_modules/fancy-lib/package.json' exists according to earlier cached lookups.",
     "File '/node_modules/fancy-lib.ts' does not exist.",
     "File '/node_modules/fancy-lib.tsx' does not exist.",
     "File '/node_modules/fancy-lib.d.ts' does not exist.",
@@ -18,6 +21,8 @@
     "'package.json' does not have a 'peerDependencies' field.",
     "Resolving real path for '/node_modules/fancy-lib/index.d.ts', result '/node_modules/fancy-lib/index.d.ts'.",
     "======== Module name 'fancy-lib' was successfully resolved to '/node_modules/fancy-lib/index.d.ts' with Package ID 'fancy-lib/index.d.ts@1.0.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -30,6 +35,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +63,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +77,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +91,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,5 +104,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeColonModuleResolution.trace.json b/tests/baselines/reference/nodeColonModuleResolution.trace.json
index 65af448d3ece3..c5fa5f4e8813c 100644
--- a/tests/baselines/reference/nodeColonModuleResolution.trace.json
+++ b/tests/baselines/reference/nodeColonModuleResolution.trace.json
@@ -1,10 +1,21 @@
 [
+    "File '/a/b/node_modules/@types/node/package.json' does not exist.",
+    "File '/a/b/node_modules/@types/package.json' does not exist.",
+    "File '/a/b/node_modules/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "Module 'ph' was resolved as locally declared ambient module in file '/a/b/node_modules/@types/node/ph.d.ts'.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'node:ph' from '/a/b/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Skipping module 'node:ph' that looks like an absolute URI, target file types: TypeScript, Declaration.",
     "Skipping module 'node:ph' that looks like an absolute URI, target file types: JavaScript.",
     "======== Module name 'node:ph' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -18,6 +29,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +44,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +59,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +74,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +89,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,5 +103,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeColonModuleResolution2.trace.json b/tests/baselines/reference/nodeColonModuleResolution2.trace.json
index 08083bc9c8440..eb7b797fc446e 100644
--- a/tests/baselines/reference/nodeColonModuleResolution2.trace.json
+++ b/tests/baselines/reference/nodeColonModuleResolution2.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/a/b/package.json' does not exist.",
+    "File '/a/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'fake:thing' from '/a/b/main.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "'paths' option is specified, looking for a pattern to match module name 'fake:thing'.",
@@ -14,6 +17,14 @@
     "File '/a/b/node_modules/fake/thing/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/a/b/node_modules/fake/thing/index.d.ts', result '/a/b/node_modules/fake/thing/index.d.ts'.",
     "======== Module name 'fake:thing' was successfully resolved to '/a/b/node_modules/fake/thing/index.d.ts'. ========",
+    "File '/a/b/node_modules/fake/thing/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/b/node_modules/fake/package.json' does not exist.",
+    "File '/a/b/node_modules/package.json' does not exist.",
+    "File '/a/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/a/b/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +40,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/a/b/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +57,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/a/b/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +74,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/a/b/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +91,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/a/b/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +108,8 @@
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/a/b/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -103,5 +124,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/a/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/nodeModulesDeclarationEmitDynamicImportWithPackageExports.js b/tests/baselines/reference/nodeModulesDeclarationEmitDynamicImportWithPackageExports.js
index e790961aa706e..3afe5f2a3f639 100644
--- a/tests/baselines/reference/nodeModulesDeclarationEmitDynamicImportWithPackageExports.js
+++ b/tests/baselines/reference/nodeModulesDeclarationEmitDynamicImportWithPackageExports.js
@@ -157,8 +157,8 @@ export declare const e: typeof import("inner/mjs");
 export declare const a: Promise<{
     default: typeof import("./index.cjs");
 }>;
-export declare const b: Promise<typeof import("./index.mjs", { with: { "resolution-mode": "import" } })>;
-export declare const c: Promise<typeof import("./index.js", { with: { "resolution-mode": "import" } })>;
+export declare const b: Promise<typeof import("package/mjs", { with: { "resolution-mode": "import" } })>;
+export declare const c: Promise<typeof import("package", { with: { "resolution-mode": "import" } })>;
 export declare const f: Promise<{
     default: typeof import("inner");
     cjsMain: true;
diff --git a/tests/baselines/reference/nodeNextModuleResolution1.js b/tests/baselines/reference/nodeNextModuleResolution1.js
index d76bd3acd7fb6..a006d7840c307 100644
--- a/tests/baselines/reference/nodeNextModuleResolution1.js
+++ b/tests/baselines/reference/nodeNextModuleResolution1.js
@@ -15,5 +15,4 @@ import {x} from "foo";
 
 
 //// [app.js]
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
+export {};
diff --git a/tests/baselines/reference/nodeNextModuleResolution2.js b/tests/baselines/reference/nodeNextModuleResolution2.js
index 19475675a566b..e57c0f2575603 100644
--- a/tests/baselines/reference/nodeNextModuleResolution2.js
+++ b/tests/baselines/reference/nodeNextModuleResolution2.js
@@ -16,5 +16,4 @@ import {x} from "foo";
 
 
 //// [app.mjs]
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
+export {};
diff --git a/tests/baselines/reference/packageJsonMain.trace.json b/tests/baselines/reference/packageJsonMain.trace.json
index 7a5ae1bf7af59..31735ac8a7d1a 100644
--- a/tests/baselines/reference/packageJsonMain.trace.json
+++ b/tests/baselines/reference/packageJsonMain.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -171,6 +172,8 @@
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "Resolving real path for '/node_modules/baz/zab/index.js', result '/node_modules/baz/zab/index.js'.",
     "======== Module name 'baz' was successfully resolved to '/node_modules/baz/zab/index.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -180,6 +183,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -189,6 +194,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -198,6 +205,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -207,6 +216,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -216,6 +227,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -224,5 +237,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/packageJsonMain_isNonRecursive.trace.json b/tests/baselines/reference/packageJsonMain_isNonRecursive.trace.json
index 1b4d806fee202..bce9f60e3923e 100644
--- a/tests/baselines/reference/packageJsonMain_isNonRecursive.trace.json
+++ b/tests/baselines/reference/packageJsonMain_isNonRecursive.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +58,8 @@
     "File '/node_modules/foo/index.d.ts' does not exist.",
     "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +69,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,6 +80,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +91,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +102,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -102,6 +113,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,5 +123,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution1_amd.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution1_amd.trace.json
index 363eb11f29b70..03e9bfb2e8fb7 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution1_amd.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution1_amd.trace.json
@@ -1,4 +1,8 @@
 [
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +16,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +31,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +46,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +61,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +76,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,5 +90,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution1_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution1_node.trace.json
index 363eb11f29b70..03e9bfb2e8fb7 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution1_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution1_node.trace.json
@@ -1,4 +1,8 @@
 [
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -12,6 +16,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +31,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -38,6 +46,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +61,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +76,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,5 +90,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution2_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution2_classic.trace.json
index 6e1ef3d70d119..4f15ca268c27f 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution2_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution2_classic.trace.json
@@ -1,4 +1,11 @@
 [
+    "File '/.src/root/src/folder1/package.json' does not exist.",
+    "File '/.src/root/src/package.json' does not exist.",
+    "File '/.src/root/package.json' does not exist.",
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -15,6 +22,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +40,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -47,6 +58,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +94,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,5 +111,7 @@
     "Directory '/.src/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution2_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution2_node.trace.json
index 6e1ef3d70d119..4f15ca268c27f 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution2_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution2_node.trace.json
@@ -1,4 +1,11 @@
 [
+    "File '/.src/root/src/folder1/package.json' does not exist.",
+    "File '/.src/root/src/package.json' does not exist.",
+    "File '/.src/root/package.json' does not exist.",
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -15,6 +22,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +40,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -47,6 +58,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +76,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +94,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,5 +111,7 @@
     "Directory '/.src/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution3_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution3_classic.trace.json
index 3b838600b6049..72fb9682d3c82 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution3_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution3_classic.trace.json
@@ -1,10 +1,16 @@
 [
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module 'folder2/file2' from 'c:/root/folder1/file1.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'folder2/file2'.",
     "Resolving module name 'folder2/file2' relative to base url 'c:/root' - 'c:/root/folder2/file2'.",
     "File 'c:/root/folder2/file2.ts' exists - use it as a name resolution result.",
     "======== Module name 'folder2/file2' was successfully resolved to 'c:/root/folder2/file2.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './file3' from 'c:/root/folder2/file2.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File 'c:/root/folder2/file3.ts' exists - use it as a name resolution result.",
@@ -24,6 +30,12 @@
     "File 'c:/root/file4.d.ts' does not exist.",
     "File 'c:/file4.ts' exists - use it as a name resolution result.",
     "======== Module name 'file4' was successfully resolved to 'c:/file4.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +49,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +64,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +79,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,6 +94,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +109,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -101,5 +123,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution3_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution3_node.trace.json
index 209dc42d5939c..b45b8522edd84 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution3_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution3_node.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module 'folder2/file2' from 'c:/root/folder1/file1.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'folder2/file2'.",
@@ -6,6 +9,9 @@
     "Loading module as file / folder, candidate module location 'c:/root/folder2/file2', target file types: TypeScript, Declaration.",
     "File 'c:/root/folder2/file2.ts' exists - use it as a name resolution result.",
     "======== Module name 'folder2/file2' was successfully resolved to 'c:/root/folder2/file2.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './file3' from 'c:/root/folder2/file2.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location 'c:/root/folder2/file3', target file types: TypeScript, Declaration.",
@@ -33,6 +39,14 @@
     "File 'c:/node_modules/file4/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for 'c:/node_modules/file4/index.d.ts', result 'c:/node_modules/file4/index.d.ts'.",
     "======== Module name 'file4' was successfully resolved to 'c:/node_modules/file4/index.d.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/node_modules/file4/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/node_modules/package.json' does not exist.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +60,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +75,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +90,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +105,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +120,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,5 +134,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution4_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution4_classic.trace.json
index f00232b0c5193..3f6ca6efb6ccf 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution4_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution4_classic.trace.json
@@ -1,10 +1,16 @@
 [
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module 'folder2/file2' from 'c:/root/folder1/file1.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'folder2/file2'.",
     "Resolving module name 'folder2/file2' relative to base url 'c:/root' - 'c:/root/folder2/file2'.",
     "File 'c:/root/folder2/file2.ts' exists - use it as a name resolution result.",
     "======== Module name 'folder2/file2' was successfully resolved to 'c:/root/folder2/file2.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './file3' from 'c:/root/folder2/file2.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "File 'c:/root/folder2/file3.ts' exists - use it as a name resolution result.",
@@ -24,6 +30,12 @@
     "File 'c:/root/file4.d.ts' does not exist.",
     "File 'c:/file4.ts' exists - use it as a name resolution result.",
     "======== Module name 'file4' was successfully resolved to 'c:/file4.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -37,6 +49,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +64,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +79,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -76,6 +94,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +109,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -101,5 +123,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution4_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution4_node.trace.json
index bc4b608cee04f..2ce98a90ea1bc 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution4_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution4_node.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module 'folder2/file2' from 'c:/root/folder1/file1.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'folder2/file2'.",
@@ -6,6 +9,9 @@
     "Loading module as file / folder, candidate module location 'c:/root/folder2/file2', target file types: TypeScript, Declaration.",
     "File 'c:/root/folder2/file2.ts' exists - use it as a name resolution result.",
     "======== Module name 'folder2/file2' was successfully resolved to 'c:/root/folder2/file2.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './file3' from 'c:/root/folder2/file2.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module as file / folder, candidate module location 'c:/root/folder2/file3', target file types: TypeScript, Declaration.",
@@ -33,6 +39,14 @@
     "File 'c:/node_modules/file4/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for 'c:/node_modules/file4/index.d.ts', result 'c:/node_modules/file4/index.d.ts'.",
     "======== Module name 'file4' was successfully resolved to 'c:/node_modules/file4/index.d.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/node_modules/file4/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/node_modules/package.json' does not exist.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +59,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +87,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +101,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +115,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -104,5 +128,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution5_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution5_classic.trace.json
index 069baaa76da72..ab302a4772d3d 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution5_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution5_classic.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module 'folder2/file1' from 'c:/root/folder1/file1.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'folder2/file1'.",
@@ -45,6 +48,20 @@
     "File 'c:/root/file4.d.ts' does not exist.",
     "File 'c:/file4.ts' exists - use it as a name resolution result.",
     "======== Module name 'file4' was successfully resolved to 'c:/file4.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/generated/folder3/package.json' does not exist.",
+    "File 'c:/root/generated/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/shared/components/package.json' does not exist.",
+    "File 'c:/root/shared/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +75,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -71,6 +90,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +105,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -97,6 +120,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,6 +135,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,5 +149,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution5_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution5_node.trace.json
index 430cebb72795a..5c47a91a3aa9b 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution5_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution5_node.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module 'folder2/file1' from 'c:/root/folder1/file1.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'folder2/file1'.",
@@ -58,6 +61,22 @@
     "File 'c:/node_modules/file4.ts' exists - use it as a name resolution result.",
     "Resolving real path for 'c:/node_modules/file4.ts', result 'c:/node_modules/file4.ts'.",
     "======== Module name 'file4' was successfully resolved to 'c:/node_modules/file4.ts'. ========",
+    "File 'c:/root/folder2/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/generated/folder3/package.json' does not exist.",
+    "File 'c:/root/generated/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/shared/components/file3/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/shared/components/package.json' does not exist.",
+    "File 'c:/root/shared/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/node_modules/package.json' does not exist.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +89,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -82,6 +103,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,6 +117,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,6 +131,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -118,6 +145,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,5 +158,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution6_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution6_classic.trace.json
index 24b30147d485b..724e6a121f6a2 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution6_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution6_classic.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/src/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module './project/file3' from 'c:/root/src/file1.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "'rootDirs' option is set, using it to resolve relative module name './project/file3'.",
@@ -10,6 +13,11 @@
     "Loading 'project/file3' from the root dir 'c:/root/generated/src', candidate location 'c:/root/generated/src/project/file3'.",
     "File 'c:/root/generated/src/project/file3.ts' exists - use it as a name resolution result.",
     "======== Module name './project/file3' was successfully resolved to 'c:/root/generated/src/project/file3.ts'. ========",
+    "File 'c:/root/generated/src/project/package.json' does not exist.",
+    "File 'c:/root/generated/src/package.json' does not exist.",
+    "File 'c:/root/generated/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '../file2' from 'c:/root/generated/src/project/file3.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "'rootDirs' option is set, using it to resolve relative module name '../file2'.",
@@ -26,6 +34,11 @@
     "File 'c:/root/src/file2.tsx' does not exist.",
     "File 'c:/root/src/file2.d.ts' exists - use it as a name resolution result.",
     "======== Module name '../file2' was successfully resolved to 'c:/root/src/file2.d.ts'. ========",
+    "File 'c:/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +55,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +73,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +91,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,6 +109,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,6 +127,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -121,5 +144,7 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution6_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution6_node.trace.json
index b03e837a0b3c1..2b9eadb00d248 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution6_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution6_node.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/src/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module './project/file3' from 'c:/root/src/file1.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'rootDirs' option is set, using it to resolve relative module name './project/file3'.",
@@ -13,6 +16,11 @@
     "Loading module as file / folder, candidate module location 'c:/root/generated/src/project/file3', target file types: TypeScript, Declaration.",
     "File 'c:/root/generated/src/project/file3.ts' exists - use it as a name resolution result.",
     "======== Module name './project/file3' was successfully resolved to 'c:/root/generated/src/project/file3.ts'. ========",
+    "File 'c:/root/generated/src/project/package.json' does not exist.",
+    "File 'c:/root/generated/src/package.json' does not exist.",
+    "File 'c:/root/generated/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '../file2' from 'c:/root/generated/src/project/file3.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'rootDirs' option is set, using it to resolve relative module name '../file2'.",
@@ -36,6 +44,12 @@
     "File 'c:/root/src/file2/index.tsx' does not exist.",
     "File 'c:/root/src/file2/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name '../file2' was successfully resolved to 'c:/root/src/file2/index.d.ts'. ========",
+    "File 'c:/root/src/file2/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +66,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +84,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +102,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -100,6 +120,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -116,6 +138,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -131,5 +155,7 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution7_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution7_classic.trace.json
index da15fc9ad28bf..c3c749b76c447 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution7_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution7_classic.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/src/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module './project/file2' from 'c:/root/src/file1.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "'rootDirs' option is set, using it to resolve relative module name './project/file2'.",
@@ -33,6 +36,11 @@
     "File 'c:/module3.tsx' does not exist.",
     "File 'c:/module3.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'module3' was successfully resolved to 'c:/module3.d.ts'. ========",
+    "File 'c:/root/generated/src/project/package.json' does not exist.",
+    "File 'c:/root/generated/src/package.json' does not exist.",
+    "File 'c:/root/generated/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'module1' from 'c:/root/generated/src/project/file2.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'module1'.",
@@ -71,6 +79,19 @@
     "File 'c:/root/src/file3.tsx' does not exist.",
     "File 'c:/root/src/file3.d.ts' exists - use it as a name resolution result.",
     "======== Module name '../file3' was successfully resolved to 'c:/root/src/file3.d.ts'. ========",
+    "File 'c:/shared/package.json' does not exist.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/generated/src/templates/package.json' does not exist.",
+    "File 'c:/root/generated/src/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/generated/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +108,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -103,6 +126,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,6 +144,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +162,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -151,6 +180,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -166,5 +197,7 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution7_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution7_node.trace.json
index 33d0880875b6c..bbc5c95104e4b 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution7_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution7_node.trace.json
@@ -1,4 +1,7 @@
 [
+    "File 'c:/root/src/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module './project/file2' from 'c:/root/src/file1.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'rootDirs' option is set, using it to resolve relative module name './project/file2'.",
@@ -39,6 +42,11 @@
     "File 'c:/node_modules/module3.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for 'c:/node_modules/module3.d.ts', result 'c:/node_modules/module3.d.ts'.",
     "======== Module name 'module3' was successfully resolved to 'c:/node_modules/module3.d.ts'. ========",
+    "File 'c:/root/generated/src/project/package.json' does not exist.",
+    "File 'c:/root/generated/src/package.json' does not exist.",
+    "File 'c:/root/generated/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'module1' from 'c:/root/generated/src/project/file2.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name 'module1'.",
@@ -92,6 +100,22 @@
     "File 'c:/root/src/file3/index.tsx' does not exist.",
     "File 'c:/root/src/file3/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name '../file3' was successfully resolved to 'c:/root/src/file3/index.d.ts'. ========",
+    "File 'c:/shared/module1/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/shared/package.json' does not exist.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/generated/src/templates/package.json' does not exist.",
+    "File 'c:/root/generated/src/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/generated/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/src/file3/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/node_modules/package.json' does not exist.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -107,6 +131,8 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -122,6 +148,8 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -137,6 +165,8 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -152,6 +182,8 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -167,6 +199,8 @@
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -181,5 +215,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/src/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution8_classic.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution8_classic.trace.json
index 9d29d1260cbb1..32a526bfeee31 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution8_classic.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution8_classic.trace.json
@@ -1,4 +1,6 @@
 [
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module '@speedy/folder1/testing' from 'c:/root/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name '@speedy/folder1/testing'.",
@@ -7,6 +9,12 @@
     "Trying substitution '*/dist/index.ts', candidate module location: 'folder1/dist/index.ts'.",
     "File 'c:/root/folder1/dist/index.ts' exists - use it as a name resolution result.",
     "======== Module name '@speedy/folder1/testing' was successfully resolved to 'c:/root/folder1/dist/index.ts'. ========",
+    "File 'c:/root/folder1/dist/package.json' does not exist.",
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -20,6 +28,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +43,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +58,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +73,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +88,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,5 +102,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution8_node.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution8_node.trace.json
index 039e06eb311f3..05e217484a9c4 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution8_node.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution8_node.trace.json
@@ -1,4 +1,6 @@
 [
+    "File 'c:/root/package.json' does not exist.",
+    "File 'c:/package.json' does not exist.",
     "======== Resolving module '@speedy/folder1/testing' from 'c:/root/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "'baseUrl' option is set to 'c:/root', using this value to resolve non-relative module name '@speedy/folder1/testing'.",
@@ -7,6 +9,12 @@
     "Trying substitution '*/dist/index.ts', candidate module location: 'folder1/dist/index.ts'.",
     "File 'c:/root/folder1/dist/index.ts' exists - use it as a name resolution result.",
     "======== Module name '@speedy/folder1/testing' was successfully resolved to 'c:/root/folder1/dist/index.ts'. ========",
+    "File 'c:/root/folder1/dist/package.json' does not exist.",
+    "File 'c:/root/folder1/package.json' does not exist.",
+    "File 'c:/root/package.json' does not exist according to earlier cached lookups.",
+    "File 'c:/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '@typescript/lib-es5' from 'c:/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -20,6 +28,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from 'c:/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +43,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from 'c:/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +58,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from 'c:/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +73,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from 'c:/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +88,8 @@
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from 'c:/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,5 +102,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory 'c:/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory 'c:/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot.trace.json
index 9c4a7a475be14..5daa6afaed6db 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot.trace.json
@@ -1,4 +1,12 @@
 [
+    "File '/root/src/package.json' does not exist.",
+    "File '/root/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '/foo' from '/root/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/root', using this value to resolve non-relative module name '/foo'.",
@@ -31,6 +39,8 @@
     "Loading module as file / folder, candidate module location '/root/src/bar', target file types: JavaScript.",
     "File '/root/src/bar.js' exists - use it as a name resolution result.",
     "======== Module name '/bar' was successfully resolved to '/root/src/bar.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +54,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +69,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +84,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +99,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +114,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,5 +128,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_differentRootTypes.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_differentRootTypes.trace.json
index 75e151060ae50..5d762c5123503 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_differentRootTypes.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_differentRootTypes.trace.json
@@ -1,4 +1,12 @@
 [
+    "File '/root/src/package.json' does not exist.",
+    "File '/root/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '/foo' from '/root/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/root', using this value to resolve non-relative module name '/foo'.",
@@ -259,6 +267,8 @@
     "Loading module as file / folder, candidate module location '/root/src/bar', target file types: JavaScript.",
     "File '/root/src/bar.js' exists - use it as a name resolution result.",
     "======== Module name 'http://server/bar' was successfully resolved to '/root/src/bar.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -272,6 +282,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -285,6 +297,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -298,6 +312,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -311,6 +327,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -324,6 +342,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -336,5 +356,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_multipleAliases.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_multipleAliases.trace.json
index 456d80728aa3f..420ca9f644ddf 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_multipleAliases.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_multipleAliases.trace.json
@@ -1,4 +1,13 @@
 [
+    "File '/root/import/package.json' does not exist.",
+    "File '/root/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/root/client/package.json' does not exist.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/src/package.json' does not exist.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '/import/foo' from '/root/src/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/root', using this value to resolve non-relative module name '/import/foo'.",
@@ -28,6 +37,8 @@
     "Loading module as file / folder, candidate module location '/root/client/bar', target file types: JavaScript.",
     "File '/root/client/bar.js' exists - use it as a name resolution result.",
     "======== Module name '/client/bar' was successfully resolved to '/root/client/bar.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +52,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -54,6 +67,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +82,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -80,6 +97,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +112,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,5 +126,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_realRootFile.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_realRootFile.trace.json
index 48590334f1e15..112d9f8228893 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_realRootFile.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_aliasWithRoot_realRootFile.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/root/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '/foo' from '/root/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/root', using this value to resolve non-relative module name '/foo'.",
@@ -29,6 +31,10 @@
     "Loading module as file / folder, candidate module location '/bar', target file types: JavaScript.",
     "File '/bar.js' exists - use it as a name resolution result.",
     "======== Module name '/bar' was successfully resolved to '/bar.js'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +48,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +63,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +78,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +93,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,6 +108,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,5 +122,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot.trace.json
index ec744ffe595b4..e6c3fb4795413 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot.trace.json
@@ -1,4 +1,12 @@
 [
+    "File '/root/src/package.json' does not exist.",
+    "File '/root/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/root/src/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/root/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '/foo' from '/root/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/root', using this value to resolve non-relative module name '/foo'.",
@@ -31,6 +39,8 @@
     "Loading module as file / folder, candidate module location '/root/src/bar', target file types: JavaScript.",
     "File '/root/src/bar.js' exists - use it as a name resolution result.",
     "======== Module name '/bar' was successfully resolved to '/root/src/bar.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -44,6 +54,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +69,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +84,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +99,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +114,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,5 +128,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot_realRootFile.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot_realRootFile.trace.json
index c32e683d6dd1b..6fb3f30a7e9be 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot_realRootFile.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_rootImport_noAliasWithRoot_realRootFile.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/root/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module '/foo' from '/root/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/root', using this value to resolve non-relative module name '/foo'.",
@@ -29,6 +31,10 @@
     "Loading module as file / folder, candidate module location '/bar', target file types: JavaScript.",
     "File '/bar.js' exists - use it as a name resolution result.",
     "======== Module name '/bar' was successfully resolved to '/bar.js'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/root/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +48,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/root/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +63,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/root/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +78,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/root/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +93,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/root/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,6 +108,8 @@
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/root/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,5 +122,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/root/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension.trace.json
index dc8f888023a89..d723a1f551283 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension.trace.json
@@ -1,4 +1,9 @@
 [
+    "File '/foo/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/bar/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'foo' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'foo'.",
@@ -15,6 +20,8 @@
     "Trying substitution 'bar/bar.js', candidate module location: 'bar/bar.js'.",
     "File '/bar/bar.js' exists - use it as a name resolution result.",
     "======== Module name 'bar' was successfully resolved to '/bar/bar.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +32,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -35,6 +44,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +56,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,6 +80,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,5 +91,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtensionInName.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtensionInName.trace.json
index d58ed7c1057ec..2f9e747cbf418 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtensionInName.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtensionInName.trace.json
@@ -1,4 +1,11 @@
 [
+    "File '/foo/zone.js/package.json' does not exist.",
+    "File '/foo/package.json' does not exist.",
+    "File '/package.json' does not exist.",
+    "File '/foo/zone.tsx/package.json' does not exist.",
+    "File '/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'zone.js' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'zone.js'.",
@@ -13,7 +20,7 @@
     "File '/foo/zone.js.ts' does not exist.",
     "File '/foo/zone.js.tsx' does not exist.",
     "File '/foo/zone.js.d.ts' does not exist.",
-    "File '/foo/zone.js/package.json' does not exist.",
+    "File '/foo/zone.js/package.json' does not exist according to earlier cached lookups.",
     "File '/foo/zone.js/index.ts' does not exist.",
     "File '/foo/zone.js/index.tsx' does not exist.",
     "File '/foo/zone.js/index.d.ts' exists - use it as a name resolution result.",
@@ -32,11 +39,13 @@
     "File '/foo/zone.tsx.ts' does not exist.",
     "File '/foo/zone.tsx.tsx' does not exist.",
     "File '/foo/zone.tsx.d.ts' does not exist.",
-    "File '/foo/zone.tsx/package.json' does not exist.",
+    "File '/foo/zone.tsx/package.json' does not exist according to earlier cached lookups.",
     "File '/foo/zone.tsx/index.ts' does not exist.",
     "File '/foo/zone.tsx/index.tsx' does not exist.",
     "File '/foo/zone.tsx/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'zone.tsx' was successfully resolved to '/foo/zone.tsx/index.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -47,6 +56,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +80,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -77,6 +92,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +104,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,5 +115,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_MapedToNodeModules.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_MapedToNodeModules.trace.json
index d5ad90d3381f0..bab9a76758861 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_MapedToNodeModules.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_MapedToNodeModules.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/bar/foobar.js' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'foo/bar/foobar.js'.",
@@ -38,6 +39,8 @@
     "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
     "Resolving real path for '/node_modules/foo/bar/foobar.js', result '/node_modules/foo/bar/foobar.js'.",
     "======== Module name 'foo/bar/foobar.js' was successfully resolved to '/node_modules/foo/bar/foobar.js'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -47,6 +50,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +61,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,6 +72,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -74,6 +83,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +94,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -91,5 +104,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_failedLookup.trace.json b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_failedLookup.trace.json
index e55f4c7d6b98d..e56b2b7d59ce2 100644
--- a/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_failedLookup.trace.json
+++ b/tests/baselines/reference/pathMappingBasedModuleResolution_withExtension_failedLookup.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'foo'.",
@@ -22,6 +23,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'foo' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +35,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +47,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +59,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +71,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +83,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +94,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathsValidation4.trace.json b/tests/baselines/reference/pathsValidation4.trace.json
index b9c4ab14796b6..1768b46d1f75b 100644
--- a/tests/baselines/reference/pathsValidation4.trace.json
+++ b/tests/baselines/reference/pathsValidation4.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/.src/src/package.json' does not exist.",
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'someModule' from '/.src/src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/.src/src', using this value to resolve non-relative module name 'someModule'.",
@@ -29,6 +32,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'someModule' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +47,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +62,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +77,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +92,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -94,6 +107,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -106,5 +121,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/pathsValidation5.trace.json b/tests/baselines/reference/pathsValidation5.trace.json
index 5bb648f020711..4584814eb8a54 100644
--- a/tests/baselines/reference/pathsValidation5.trace.json
+++ b/tests/baselines/reference/pathsValidation5.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/.src/src/package.json' does not exist.",
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'someModule' from '/.src/src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'paths' option is specified, looking for a pattern to match module name 'someModule'.",
@@ -14,6 +17,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'someModule' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -27,6 +32,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -40,6 +47,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -53,6 +62,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +77,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +92,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -91,5 +106,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModuleAndPathMapping.trace.json b/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModuleAndPathMapping.trace.json
index 094bdc2634882..0901319424e73 100644
--- a/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModuleAndPathMapping.trace.json
+++ b/tests/baselines/reference/requireOfJsonFileWithoutResolveJsonModuleAndPathMapping.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/bar/foobar.json' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'foo/bar/foobar.json'.",
@@ -42,6 +43,8 @@
     "File '/node_modules/foo/bar/foobar.json.js' does not exist.",
     "File '/node_modules/foo/bar/foobar.json.jsx' does not exist.",
     "======== Module name 'foo/bar/foobar.json' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +54,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +65,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +76,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +87,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +98,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -95,5 +108,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/requireOfJsonFile_PathMapping.trace.json b/tests/baselines/reference/requireOfJsonFile_PathMapping.trace.json
index 7ff6bd7b37f52..cbaa911ec4bc2 100644
--- a/tests/baselines/reference/requireOfJsonFile_PathMapping.trace.json
+++ b/tests/baselines/reference/requireOfJsonFile_PathMapping.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'foo/bar/foobar.json' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'foo/bar/foobar.json'.",
@@ -34,6 +35,8 @@
     "File '/node_modules/foo/package.json' does not exist according to earlier cached lookups.",
     "Resolving real path for '/node_modules/foo/bar/foobar.json', result '/node_modules/foo/bar/foobar.json'.",
     "======== Module name 'foo/bar/foobar.json' was successfully resolved to '/node_modules/foo/bar/foobar.json'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +46,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +57,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +68,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,6 +79,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +90,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,5 +100,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).errors.txt b/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).errors.txt
index befdfb5cd9df7..fe904ca69530b 100644
--- a/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).errors.txt
+++ b/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).errors.txt
@@ -1,4 +1,3 @@
-error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
 error TS6504: File '/node_modules/bar/index.js' is a JavaScript file. Did you mean to enable the 'allowJs' option?
   The file is in the program because:
     Root file specified for compilation
@@ -17,7 +16,6 @@ error TS6504: File '/node_modules/foo/index.mjs' is a JavaScript file. Did you m
   There are types at '/node_modules/@types/bar/index.d.ts', but this result could not be resolved when respecting package.json "exports". The '@types/bar' library may need to update its package.json or typings.
 
 
-!!! error TS5095: Option 'bundler' can only be used when 'module' is set to 'preserve' or to 'es2015' or later.
 !!! error TS6504: File '/node_modules/bar/index.js' is a JavaScript file. Did you mean to enable the 'allowJs' option?
 !!! error TS6504:   The file is in the program because:
 !!! error TS6504:     Root file specified for compilation
diff --git a/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).trace.json b/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).trace.json
index f79ccd1ddc65d..acf4e85067873 100644
--- a/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).trace.json
+++ b/tests/baselines/reference/resolvesWithoutExportsDiagnostic1(moduleresolution=bundler).trace.json
@@ -1,11 +1,13 @@
 [
+    "Found 'package.json' at '/node_modules/foo/package.json'.",
+    "Found 'package.json' at '/node_modules/@types/bar/package.json'.",
     "======== Resolving module 'foo' from '/index.mts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
     "File '/package.json' does not exist.",
     "Loading module 'foo' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
-    "Found 'package.json' at '/node_modules/foo/package.json'.",
+    "File '/node_modules/foo/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Matched 'exports' condition 'import'.",
     "Using 'exports' subpath '.' with target './index.mjs'.",
@@ -56,7 +58,7 @@
     "Failed to resolve under condition 'import'.",
     "Saw non-matching condition 'require'.",
     "Exiting conditional exports.",
-    "Found 'package.json' at '/node_modules/@types/bar/package.json'.",
+    "File '/node_modules/@types/bar/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Saw non-matching condition 'require'.",
     "Exiting conditional exports.",
@@ -116,6 +118,8 @@
     "File '/node_modules/@types/bar/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/bar/index.d.ts', result '/node_modules/@types/bar/index.d.ts'.",
     "======== Type reference directive 'bar' was successfully resolved to '/node_modules/@types/bar/index.d.ts' with Package ID '@types/bar/index.d.ts@1.0.0', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -128,6 +132,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -140,6 +146,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -151,6 +159,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -163,6 +173,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -174,6 +186,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -185,5 +199,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/reuseProgramStructure/can-reuse-ambient-module-declarations-from-non-modified-files.js b/tests/baselines/reference/reuseProgramStructure/can-reuse-ambient-module-declarations-from-non-modified-files.js
index e0a2cb5de0790..fea620a833358 100644
--- a/tests/baselines/reference/reuseProgramStructure/can-reuse-ambient-module-declarations-from-non-modified-files.js
+++ b/tests/baselines/reference/reuseProgramStructure/can-reuse-ambient-module-declarations-from-non-modified-files.js
@@ -38,6 +38,9 @@ File: /a/b/node.d.ts
 
 declare module 'fs' {}
 
+File '/a/b/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module 'fs' from '/a/b/app.ts'. ========
 Module resolution kind is not specified, using 'Classic'.
 File '/a/b/fs.ts' does not exist.
@@ -66,6 +69,10 @@ File '/a/fs.jsx' does not exist.
 File '/fs.js' does not exist.
 File '/fs.jsx' does not exist.
 ======== Module name 'fs' was not resolved. ========
+File '/a/b/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist.
 
 MissingPaths:: [
   "lib.d.ts"
@@ -114,6 +121,12 @@ File: /a/b/node.d.ts
 
 declare module 'fs' {}
 
+File '/a/b/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/a/b/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Module 'fs' was resolved as ambient module declared in '/a/b/node.d.ts' since this file was not modified.
 
 MissingPaths:: [
@@ -163,6 +176,12 @@ File: /a/b/node.d.ts
 
 declare var process: any
 
+File '/a/b/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/a/b/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'fs' from '/a/b/app.ts'. ========
 Module resolution kind is not specified, using 'Classic'.
 File '/a/b/fs.ts' does not exist.
diff --git a/tests/baselines/reference/reuseProgramStructure/can-reuse-module-resolutions-from-non-modified-files.js b/tests/baselines/reference/reuseProgramStructure/can-reuse-module-resolutions-from-non-modified-files.js
index 514a18f42c628..5f88f3f72fe6a 100644
--- a/tests/baselines/reference/reuseProgramStructure/can-reuse-module-resolutions-from-non-modified-files.js
+++ b/tests/baselines/reference/reuseProgramStructure/can-reuse-module-resolutions-from-non-modified-files.js
@@ -92,18 +92,32 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'typerefs1', containing file 'f1.ts', root directory 'node_modules/@types'. ========
 Resolving with primary search path 'node_modules/@types'.
-File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
 File 'node_modules/@types/typerefs1/index.d.ts' exists - use it as a name resolution result.
 ======== Type reference directive 'typerefs1' was successfully resolved to 'node_modules/@types/typerefs1/index.d.ts', primary: true. ========
 ======== Resolving module './b1' from 'f1.ts'. ========
 Explicitly specified module resolution kind: 'Classic'.
 File 'b1.ts' exists - use it as a name resolution result.
 ======== Module name './b1' was successfully resolved to 'b1.ts'. ========
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'typerefs2', containing file 'f2.ts', root directory 'node_modules/@types'. ========
 Resolving with primary search path 'node_modules/@types'.
-File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/typerefs2/package.json' does not exist according to earlier cached lookups.
 File 'node_modules/@types/typerefs2/index.d.ts' exists - use it as a name resolution result.
 ======== Type reference directive 'typerefs2' was successfully resolved to 'node_modules/@types/typerefs2/index.d.ts', primary: true. ========
 ======== Resolving module './b2' from 'f2.ts'. ========
@@ -217,18 +231,47 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'typerefs1', containing file 'f1.ts', root directory 'node_modules/@types'. ========
 Resolving with primary search path 'node_modules/@types'.
-File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
 File 'node_modules/@types/typerefs1/index.d.ts' exists - use it as a name resolution result.
 ======== Type reference directive 'typerefs1' was successfully resolved to 'node_modules/@types/typerefs1/index.d.ts', primary: true. ========
 ======== Resolving module './b1' from 'f1.ts'. ========
 Explicitly specified module resolution kind: 'Classic'.
 File 'b1.ts' exists - use it as a name resolution result.
 ======== Module name './b1' was successfully resolved to 'b1.ts'. ========
+File 'package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'typerefs2' from 'f2.ts' of old program, it was successfully resolved to 'node_modules/@types/typerefs2/index.d.ts'.
 Reusing resolution of module './b2' from 'f2.ts' of old program, it was successfully resolved to 'b2.ts'.
 Reusing resolution of module './f1' from 'f2.ts' of old program, it was successfully resolved to 'f1.ts'.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: [
   "lib.d.ts"
@@ -322,13 +365,42 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving module './b1' from 'f1.ts'. ========
 Explicitly specified module resolution kind: 'Classic'.
 File 'b1.ts' exists - use it as a name resolution result.
 ======== Module name './b1' was successfully resolved to 'b1.ts'. ========
+File 'package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'typerefs2' from 'f2.ts' of old program, it was successfully resolved to 'node_modules/@types/typerefs2/index.d.ts'.
 Reusing resolution of module './b2' from 'f2.ts' of old program, it was successfully resolved to 'b2.ts'.
 Reusing resolution of module './f1' from 'f2.ts' of old program, it was successfully resolved to 'f1.ts'.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: [
   "lib.d.ts"
@@ -422,13 +494,42 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving module './b1' from 'f1.ts'. ========
 Explicitly specified module resolution kind: 'Classic'.
 File 'b1.ts' exists - use it as a name resolution result.
 ======== Module name './b1' was successfully resolved to 'b1.ts'. ========
+File 'package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'typerefs2' from 'f2.ts' of old program, it was successfully resolved to 'node_modules/@types/typerefs2/index.d.ts'.
 Reusing resolution of module './b2' from 'f2.ts' of old program, it was successfully resolved to 'b2.ts'.
 Reusing resolution of module './f1' from 'f2.ts' of old program, it was successfully resolved to 'f1.ts'.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: [
   "lib.d.ts"
@@ -521,6 +622,20 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving module './b1' from 'f1.ts'. ========
 Explicitly specified module resolution kind: 'Classic'.
 File 'b1.ts' exists - use it as a name resolution result.
@@ -618,13 +733,42 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving module './b1' from 'f1.ts'. ========
 Explicitly specified module resolution kind: 'Classic'.
 File 'b1.ts' exists - use it as a name resolution result.
 ======== Module name './b1' was successfully resolved to 'b1.ts'. ========
+File 'package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'typerefs2' from 'f2.ts' of old program, it was successfully resolved to 'node_modules/@types/typerefs2/index.d.ts'.
 Reusing resolution of module './b2' from 'f2.ts' of old program, it was successfully resolved to 'b2.ts'.
 Reusing resolution of module './f1' from 'f2.ts' of old program, it was successfully resolved to 'f1.ts'.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: [
   "lib.d.ts"
@@ -709,9 +853,38 @@ typerefs2: {
   ]
 }
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs1/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/typerefs2/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/@types/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'typerefs2' from 'f2.ts' of old program, it was successfully resolved to 'node_modules/@types/typerefs2/index.d.ts'.
 Reusing resolution of module './b2' from 'f2.ts' of old program, it was successfully resolved to 'b2.ts'.
 Reusing resolution of module './f1' from 'f2.ts' of old program, it was successfully resolved to 'f1.ts'.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: [
   "lib.d.ts"
diff --git a/tests/baselines/reference/reuseProgramStructure/fetches-imports-after-npm-install.js b/tests/baselines/reference/reuseProgramStructure/fetches-imports-after-npm-install.js
index a238d15384f72..e0465c1a849d1 100644
--- a/tests/baselines/reference/reuseProgramStructure/fetches-imports-after-npm-install.js
+++ b/tests/baselines/reference/reuseProgramStructure/fetches-imports-after-npm-install.js
@@ -29,6 +29,7 @@ File: file2.ts
 
 
 
+File 'package.json' does not exist.
 ======== Resolving module 'a' from 'file1.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module 'a' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -51,6 +52,8 @@ File 'node_modules/a.jsx' does not exist.
 File 'node_modules/a/index.js' does not exist.
 File 'node_modules/a/index.jsx' does not exist.
 ======== Module name 'a' was not resolved. ========
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: [
   "lib.d.ts"
@@ -93,6 +96,9 @@ File: file2.ts
 
 
 
+File 'package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'a' from 'file1.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module 'a' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -105,6 +111,10 @@ File 'node_modules/a/index.ts' does not exist.
 File 'node_modules/a/index.tsx' does not exist.
 File 'node_modules/a/index.d.ts' exists - use it as a name resolution result.
 ======== Module name 'a' was successfully resolved to 'node_modules/a/index.d.ts'. ========
+File 'node_modules/a/package.json' does not exist according to earlier cached lookups.
+File 'node_modules/package.json' does not exist.
+File 'package.json' does not exist according to earlier cached lookups.
+File 'package.json' does not exist according to earlier cached lookups.
 
 MissingPaths:: []
 
diff --git a/tests/baselines/reference/scopedPackages.trace.json b/tests/baselines/reference/scopedPackages.trace.json
index 7b4f3e8c2c385..f94a6d09a1ef5 100644
--- a/tests/baselines/reference/scopedPackages.trace.json
+++ b/tests/baselines/reference/scopedPackages.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module '@cow/boy' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module '@cow/boy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +32,21 @@
     "File '/node_modules/@types/be__bop/e/z.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/be__bop/e/z.d.ts', result '/node_modules/@types/be__bop/e/z.d.ts'.",
     "======== Module name '@be/bop/e/z' was successfully resolved to '/node_modules/@types/be__bop/e/z.d.ts'. ========",
+    "File '/node_modules/@cow/boy/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@cow/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/be__bop/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/be__bop/e/package.json' does not exist.",
+    "File '/node_modules/@types/be__bop/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +59,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +86,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -78,6 +100,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -89,6 +113,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -100,5 +126,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/scopedPackagesClassic.trace.json b/tests/baselines/reference/scopedPackagesClassic.trace.json
index 2407dcda0f12f..a17d1ab8e8e58 100644
--- a/tests/baselines/reference/scopedPackagesClassic.trace.json
+++ b/tests/baselines/reference/scopedPackagesClassic.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module '@see/saw' from '/a.ts'. ========",
     "Explicitly specified module resolution kind: 'Classic'.",
     "Searching all ancestor node_modules directories for preferred extensions: Declaration.",
@@ -8,6 +9,12 @@
     "File '/node_modules/@types/see__saw/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/see__saw/index.d.ts', result '/node_modules/@types/see__saw/index.d.ts'.",
     "======== Module name '@see/saw' was successfully resolved to '/node_modules/@types/see__saw/index.d.ts'. ========",
+    "File '/node_modules/@types/see__saw/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -20,6 +27,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +41,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +54,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -55,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +81,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -77,5 +94,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/selfNameModuleAugmentation.trace.json b/tests/baselines/reference/selfNameModuleAugmentation.trace.json
index f3eac5210e5c3..61bdd1a3b1df7 100644
--- a/tests/baselines/reference/selfNameModuleAugmentation.trace.json
+++ b/tests/baselines/reference/selfNameModuleAugmentation.trace.json
@@ -1,9 +1,11 @@
 [
+    "File '/node_modules/acorn-walk/dist/package.json' does not exist.",
+    "Found 'package.json' at '/node_modules/acorn-walk/package.json'.",
     "======== Resolving module 'acorn-walk' from '/node_modules/acorn-walk/dist/walk.d.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/node_modules/acorn-walk/dist/package.json' does not exist.",
-    "Found 'package.json' at '/node_modules/acorn-walk/package.json'.",
+    "File '/node_modules/acorn-walk/dist/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/acorn-walk/package.json' exists according to earlier cached lookups.",
     "Entering conditional exports.",
     "Matched 'exports' condition 'import'.",
     "Using 'exports' subpath '.' with target './dist/walk.mjs'.",
@@ -23,10 +25,11 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/acorn-walk/dist/walk.d.ts', result '/node_modules/acorn-walk/dist/walk.d.ts'.",
     "======== Module name 'acorn-walk' was successfully resolved to '/node_modules/acorn-walk/dist/walk.d.ts' with Package ID 'acorn-walk/dist/walk.d.ts@8.2.0'. ========",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'acorn-walk' from '/index.ts'. ========",
     "Explicitly specified module resolution kind: 'Bundler'.",
     "Resolving in CJS mode with conditions 'import', 'types'.",
-    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "Loading module 'acorn-walk' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.",
     "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
     "File '/node_modules/acorn-walk/package.json' exists according to earlier cached lookups.",
@@ -48,6 +51,8 @@
     "Exiting conditional exports.",
     "Resolving real path for '/node_modules/acorn-walk/dist/walk.d.ts', result '/node_modules/acorn-walk/dist/walk.d.ts'.",
     "======== Module name 'acorn-walk' was successfully resolved to '/node_modules/acorn-walk/dist/walk.d.ts' with Package ID 'acorn-walk/dist/walk.d.ts@8.2.0'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +65,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +79,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +93,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +107,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +121,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,5 +134,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/tsbuild/amdModulesWithOut/modules-and-globals-mixed-in-amd.js b/tests/baselines/reference/tsbuild/amdModulesWithOut/modules-and-globals-mixed-in-amd.js
index 9d4cb1df205f5..1ef75109fd008 100644
--- a/tests/baselines/reference/tsbuild/amdModulesWithOut/modules-and-globals-mixed-in-amd.js
+++ b/tests/baselines/reference/tsbuild/amdModulesWithOut/modules-and-globals-mixed-in-amd.js
@@ -241,7 +241,7 @@ sourceFile:file4.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/app/module.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../lib/module.d.ts","./file3.ts","./file4.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","-10505171738-export const z = 30;\nimport { x } from \"file1\";\n","1463681686-const myVar = 30;"],"root":[3,4],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"-23302177839-declare module \"file3\" {\n    export const z = 30;\n}\ndeclare const myVar = 30;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../lib/module.d.ts","./file3.ts","./file4.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","impliedFormat":1},{"version":"-10505171738-export const z = 30;\nimport { x } from \"file1\";\n","impliedFormat":1},{"version":"1463681686-const myVar = 30;","impliedFormat":1}],"root":[3,4],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"-23302177839-declare module \"file3\" {\n    export const z = 30;\n}\ndeclare const myVar = 30;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/app/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -253,10 +253,38 @@ sourceFile:file4.ts
       "./file4.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../lib/module.d.ts": "29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n",
-      "./file3.ts": "-10505171738-export const z = 30;\nimport { x } from \"file1\";\n",
-      "./file4.ts": "1463681686-const myVar = 30;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../lib/module.d.ts": {
+        "original": {
+          "version": "29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n",
+          "impliedFormat": 1
+        },
+        "version": "29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n",
+        "impliedFormat": "commonjs"
+      },
+      "./file3.ts": {
+        "original": {
+          "version": "-10505171738-export const z = 30;\nimport { x } from \"file1\";\n",
+          "impliedFormat": 1
+        },
+        "version": "-10505171738-export const z = 30;\nimport { x } from \"file1\";\n",
+        "impliedFormat": "commonjs"
+      },
+      "./file4.ts": {
+        "original": {
+          "version": "1463681686-const myVar = 30;",
+          "impliedFormat": 1
+        },
+        "version": "1463681686-const myVar = 30;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -281,7 +309,7 @@ sourceFile:file4.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1161
+  "size": 1281
 }
 
 //// [/src/lib/module.d.ts]
@@ -552,7 +580,7 @@ sourceFile:global.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/lib/module.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","3587416848-const myGlob = 20;","-10726455937-export const x = 10;","-13729954175-export const y = 20;","1028229885-const globalConst = 10;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"3587416848-const myGlob = 20;","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1},{"version":"1028229885-const globalConst = 10;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -565,11 +593,46 @@ sourceFile:global.ts
       "./global.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./file0.ts": "3587416848-const myGlob = 20;",
-      "./file1.ts": "-10726455937-export const x = 10;",
-      "./file2.ts": "-13729954175-export const y = 20;",
-      "./global.ts": "1028229885-const globalConst = 10;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./file0.ts": {
+        "original": {
+          "version": "3587416848-const myGlob = 20;",
+          "impliedFormat": 1
+        },
+        "version": "3587416848-const myGlob = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./global.ts": {
+        "original": {
+          "version": "1028229885-const globalConst = 10;",
+          "impliedFormat": 1
+        },
+        "version": "1028229885-const globalConst = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -598,7 +661,7 @@ sourceFile:global.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1111
+  "size": 1261
 }
 
 
@@ -796,7 +859,7 @@ sourceFile:global.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/lib/module.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","3587416848-const myGlob = 20;","-4405159098-export const x = 10;console.log(x);","-13729954175-export const y = 20;","1028229885-const globalConst = 10;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"3587416848-const myGlob = 20;","impliedFormat":1},{"version":"-4405159098-export const x = 10;console.log(x);","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1},{"version":"1028229885-const globalConst = 10;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -809,11 +872,46 @@ sourceFile:global.ts
       "./global.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./file0.ts": "3587416848-const myGlob = 20;",
-      "./file1.ts": "-4405159098-export const x = 10;console.log(x);",
-      "./file2.ts": "-13729954175-export const y = 20;",
-      "./global.ts": "1028229885-const globalConst = 10;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./file0.ts": {
+        "original": {
+          "version": "3587416848-const myGlob = 20;",
+          "impliedFormat": 1
+        },
+        "version": "3587416848-const myGlob = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "-4405159098-export const x = 10;console.log(x);",
+          "impliedFormat": 1
+        },
+        "version": "-4405159098-export const x = 10;console.log(x);",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./global.ts": {
+        "original": {
+          "version": "1028229885-const globalConst = 10;",
+          "impliedFormat": 1
+        },
+        "version": "1028229885-const globalConst = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -842,6 +940,6 @@ sourceFile:global.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1125
+  "size": 1275
 }
 
diff --git a/tests/baselines/reference/tsbuild/amdModulesWithOut/prepend-reports-deprecation-error.js b/tests/baselines/reference/tsbuild/amdModulesWithOut/prepend-reports-deprecation-error.js
index e2370d49b9551..94de7260e19fd 100644
--- a/tests/baselines/reference/tsbuild/amdModulesWithOut/prepend-reports-deprecation-error.js
+++ b/tests/baselines/reference/tsbuild/amdModulesWithOut/prepend-reports-deprecation-error.js
@@ -374,7 +374,7 @@ sourceFile:global.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/lib/module.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","3587416848-const myGlob = 20;","-10726455937-export const x = 10;","-13729954175-export const y = 20;","1028229885-const globalConst = 10;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"3587416848-const myGlob = 20;","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1},{"version":"1028229885-const globalConst = 10;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -387,11 +387,46 @@ sourceFile:global.ts
       "./global.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./file0.ts": "3587416848-const myGlob = 20;",
-      "./file1.ts": "-10726455937-export const x = 10;",
-      "./file2.ts": "-13729954175-export const y = 20;",
-      "./global.ts": "1028229885-const globalConst = 10;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./file0.ts": {
+        "original": {
+          "version": "3587416848-const myGlob = 20;",
+          "impliedFormat": 1
+        },
+        "version": "3587416848-const myGlob = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./global.ts": {
+        "original": {
+          "version": "1028229885-const globalConst = 10;",
+          "impliedFormat": 1
+        },
+        "version": "1028229885-const globalConst = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -420,7 +455,7 @@ sourceFile:global.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1111
+  "size": 1261
 }
 
 
@@ -631,7 +666,7 @@ sourceFile:global.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/lib/module.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","3587416848-const myGlob = 20;","-4405159098-export const x = 10;console.log(x);","-13729954175-export const y = 20;","1028229885-const globalConst = 10;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./file0.ts","./file1.ts","./file2.ts","./global.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"3587416848-const myGlob = 20;","impliedFormat":1},{"version":"-4405159098-export const x = 10;console.log(x);","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1},{"version":"1028229885-const globalConst = 10;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"29754794677-declare const myGlob = 20;\ndeclare module \"file1\" {\n    export const x = 10;\n}\ndeclare module \"file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -644,11 +679,46 @@ sourceFile:global.ts
       "./global.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./file0.ts": "3587416848-const myGlob = 20;",
-      "./file1.ts": "-4405159098-export const x = 10;console.log(x);",
-      "./file2.ts": "-13729954175-export const y = 20;",
-      "./global.ts": "1028229885-const globalConst = 10;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./file0.ts": {
+        "original": {
+          "version": "3587416848-const myGlob = 20;",
+          "impliedFormat": 1
+        },
+        "version": "3587416848-const myGlob = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "-4405159098-export const x = 10;console.log(x);",
+          "impliedFormat": 1
+        },
+        "version": "-4405159098-export const x = 10;console.log(x);",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./global.ts": {
+        "original": {
+          "version": "1028229885-const globalConst = 10;",
+          "impliedFormat": 1
+        },
+        "version": "1028229885-const globalConst = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -677,6 +747,6 @@ sourceFile:global.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1125
+  "size": 1275
 }
 
diff --git a/tests/baselines/reference/tsbuild/amdModulesWithOut/when-the-module-resolution-finds-original-source-file.js b/tests/baselines/reference/tsbuild/amdModulesWithOut/when-the-module-resolution-finds-original-source-file.js
index a8659bff008d1..f122e59a4fedb 100644
--- a/tests/baselines/reference/tsbuild/amdModulesWithOut/when-the-module-resolution-finds-original-source-file.js
+++ b/tests/baselines/reference/tsbuild/amdModulesWithOut/when-the-module-resolution-finds-original-source-file.js
@@ -241,7 +241,7 @@ sourceFile:file4.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/app/module.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../module.d.ts","./file3.ts","./file4.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","-16038404532-export const z = 30;\nimport { x } from \"lib/file1\";\n","1463681686-const myVar = 30;"],"root":[3,4],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"-23302177839-declare module \"file3\" {\n    export const z = 30;\n}\ndeclare const myVar = 30;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../module.d.ts","./file3.ts","./file4.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","impliedFormat":1},{"version":"-16038404532-export const z = 30;\nimport { x } from \"lib/file1\";\n","impliedFormat":1},{"version":"1463681686-const myVar = 30;","impliedFormat":1}],"root":[3,4],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","sourceMap":true,"strict":false,"target":1},"outSignature":"-23302177839-declare module \"file3\" {\n    export const z = 30;\n}\ndeclare const myVar = 30;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/app/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -253,10 +253,38 @@ sourceFile:file4.ts
       "./file4.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../module.d.ts": "-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n",
-      "./file3.ts": "-16038404532-export const z = 30;\nimport { x } from \"lib/file1\";\n",
-      "./file4.ts": "1463681686-const myVar = 30;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../module.d.ts": {
+        "original": {
+          "version": "-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n",
+          "impliedFormat": 1
+        },
+        "version": "-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n",
+        "impliedFormat": "commonjs"
+      },
+      "./file3.ts": {
+        "original": {
+          "version": "-16038404532-export const z = 30;\nimport { x } from \"lib/file1\";\n",
+          "impliedFormat": 1
+        },
+        "version": "-16038404532-export const z = 30;\nimport { x } from \"lib/file1\";\n",
+        "impliedFormat": "commonjs"
+      },
+      "./file4.ts": {
+        "original": {
+          "version": "1463681686-const myVar = 30;",
+          "impliedFormat": 1
+        },
+        "version": "1463681686-const myVar = 30;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -281,7 +309,7 @@ sourceFile:file4.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1170
+  "size": 1290
 }
 
 //// [/src/module.d.ts]
@@ -553,7 +581,7 @@ sourceFile:lib/global.ts
 >>>//# sourceMappingURL=module.js.map
 
 //// [/src/module.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./lib/file0.ts","./lib/file1.ts","./lib/file2.ts","./lib/global.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","3587416848-const myGlob = 20;","-10726455937-export const x = 10;","-13729954175-export const y = 20;","1028229885-const globalConst = 10;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","rootDir":"./","sourceMap":true,"strict":false,"target":1},"outSignature":"-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./lib/file0.ts","./lib/file1.ts","./lib/file2.ts","./lib/global.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"3587416848-const myGlob = 20;","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1},{"version":"1028229885-const globalConst = 10;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./module.js","rootDir":"./","sourceMap":true,"strict":false,"target":1},"outSignature":"-21806566655-declare const myGlob = 20;\ndeclare module \"lib/file1\" {\n    export const x = 10;\n}\ndeclare module \"lib/file2\" {\n    export const y = 20;\n}\ndeclare const globalConst = 10;\n","latestChangedDtsFile":"./module.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/module.tsbuildinfo.readable.baseline.txt]
 {
@@ -566,11 +594,46 @@ sourceFile:lib/global.ts
       "./lib/global.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./lib/file0.ts": "3587416848-const myGlob = 20;",
-      "./lib/file1.ts": "-10726455937-export const x = 10;",
-      "./lib/file2.ts": "-13729954175-export const y = 20;",
-      "./lib/global.ts": "1028229885-const globalConst = 10;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./lib/file0.ts": {
+        "original": {
+          "version": "3587416848-const myGlob = 20;",
+          "impliedFormat": 1
+        },
+        "version": "3587416848-const myGlob = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./lib/file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./lib/file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      },
+      "./lib/global.ts": {
+        "original": {
+          "version": "1028229885-const globalConst = 10;",
+          "impliedFormat": 1
+        },
+        "version": "1028229885-const globalConst = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -600,6 +663,6 @@ sourceFile:lib/global.ts
     "latestChangedDtsFile": "./module.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1148
+  "size": 1298
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/different-options-discrepancies.js
index e8fd5fc136a36..0694699c274a3 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -66,19 +71,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,19 +137,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -185,19 +200,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -246,19 +266,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -304,19 +329,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-discrepancies.js
index 706bd7b64b101..89fbd35d784e2 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -62,19 +67,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -123,19 +133,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -177,19 +192,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile-discrepancies.js
index e39854108f896..e84c1aa9a3254 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile-discrepancies.js
@@ -8,11 +8,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -39,11 +54,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -78,11 +108,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -109,11 +154,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile.js b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile.js
index 5f0b2e03fe3cd..21bbf055dbbc4 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental-with-outFile.js
@@ -103,7 +103,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -116,11 +116,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -142,7 +177,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 884
+  "size": 1034
 }
 
 
@@ -220,7 +255,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAzB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -233,11 +268,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -260,7 +330,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 901
+  "size": 1051
 }
 
 
@@ -334,7 +404,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -347,11 +417,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -373,7 +478,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 884
+  "size": 1034
 }
 
 
@@ -434,7 +539,7 @@ declare module "d" {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -447,11 +552,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -474,7 +614,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 903
+  "size": 1053
 }
 
 
@@ -539,7 +679,7 @@ declare module "d" {
 {"version":3,"file":"outFile.d.ts","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";IAAA,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICApB,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICAI,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC;;;ICAnB,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -552,11 +692,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -580,7 +755,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 925
+  "size": 1075
 }
 
 
@@ -673,7 +848,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -686,11 +861,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -712,7 +922,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 885
+  "size": 1035
 }
 
 
@@ -761,7 +971,7 @@ No shapes updated in the builder::
 //// [/src/outFile.d.ts] file written with same contents
 //// [/src/outFile.d.ts.map] file written with same contents
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -774,11 +984,46 @@ No shapes updated in the builder::
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -802,7 +1047,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 926
+  "size": 1076
 }
 
 
@@ -893,7 +1138,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoib3V0RmlsZS5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbInByb2plY3QvYS50cyIsInByb2plY3QvYi50cyIsInByb2plY3QvYy50cyIsInByb2plY3QvZC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7O0lBQWEsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsR0FBRyxDQUFDOzs7Ozs7SUNBMUIsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsRUFBRSxDQUFDOzs7Ozs7SUNBRCxRQUFBLENBQUMsR0FBRyxLQUFDLENBQUM7Ozs7OztJQ0FOLFFBQUEsQ0FBQyxHQUFHLEtBQUMsQ0FBQyJ9
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -906,11 +1151,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -933,7 +1213,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 908
+  "size": 1058
 }
 
 
@@ -1011,7 +1291,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,GAAG,CAAC;;;;;;ICA1B,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1024,11 +1304,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1051,7 +1366,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 902
+  "size": 1052
 }
 
 
@@ -1125,7 +1440,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1138,11 +1453,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1164,7 +1514,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 885
+  "size": 1035
 }
 
 
@@ -1213,7 +1563,7 @@ No shapes updated in the builder::
 //// [/src/outFile.d.ts] file written with same contents
 //// [/src/outFile.d.ts.map] file written with same contents
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1226,11 +1576,46 @@ No shapes updated in the builder::
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1254,7 +1639,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 926
+  "size": 1076
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental.js b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental.js
index d063c8ff0c3bd..4781287865bef 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-with-incremental.js
@@ -112,7 +112,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -136,27 +136,49 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-18487752940-export const a = 10;const aLocal = 10;"
+        "signature": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-6189287562-export const b = 10;const bLocal = 10;"
+        "signature": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "3248317647-import { a } from \"./a\";export const c = a;"
+        "signature": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "signature": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -190,7 +212,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1078
 }
 
 
@@ -278,7 +300,7 @@ exports.d = b_1.b;
 {"version":3,"file":"d.js","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":";;;AAAA,yBAAwB;AAAa,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -302,27 +324,49 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-18487752940-export const a = 10;const aLocal = 10;"
+        "signature": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-6189287562-export const b = 10;const bLocal = 10;"
+        "signature": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "3248317647-import { a } from \"./a\";export const c = a;"
+        "signature": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "signature": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -359,7 +403,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 969
+  "size": 1107
 }
 
 
@@ -434,7 +478,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -458,27 +502,49 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-18487752940-export const a = 10;const aLocal = 10;"
+        "signature": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-6189287562-export const b = 10;const bLocal = 10;"
+        "signature": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "3248317647-import { a } from \"./a\";export const c = a;"
+        "signature": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "signature": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -512,7 +578,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1078
 }
 
 
@@ -572,7 +638,7 @@ export declare const d = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -596,43 +662,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -669,7 +745,7 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1247
+  "size": 1337
 }
 
 
@@ -742,7 +818,7 @@ export declare const d = 10;
 {"version":3,"file":"d.d.ts","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":"AAAwB,eAAO,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -766,43 +842,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -840,7 +926,7 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1269
+  "size": 1359
 }
 
 
@@ -912,7 +998,7 @@ var aLocal = 100;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -936,43 +1022,53 @@ var aLocal = 100;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1006,7 +1102,7 @@ var aLocal = 100;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1217
+  "size": 1307
 }
 
 
@@ -1059,7 +1155,7 @@ No shapes updated in the builder::
 //// [/src/project/d.d.ts] file written with same contents
 //// [/src/project/d.d.ts.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1083,43 +1179,53 @@ No shapes updated in the builder::
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1157,7 +1263,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1270
+  "size": 1360
 }
 
 
@@ -1249,7 +1355,7 @@ exports.d = b_1.b;
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZC5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbImQudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7O0FBQUEseUJBQXdCO0FBQWEsUUFBQSxDQUFDLEdBQUcsS0FBQyxDQUFDIn0=
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1273,43 +1379,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1346,7 +1462,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1252
+  "size": 1342
 }
 
 
@@ -1428,7 +1544,7 @@ exports.d = b_1.b;
 
 //// [/src/project/d.js.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1452,43 +1568,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1525,7 +1651,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1246
+  "size": 1336
 }
 
 
@@ -1600,7 +1726,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1624,43 +1750,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1694,7 +1830,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1217
+  "size": 1307
 }
 
 
@@ -1747,7 +1883,7 @@ No shapes updated in the builder::
 //// [/src/project/d.d.ts] file written with same contents
 //// [/src/project/d.d.ts.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1771,43 +1907,53 @@ No shapes updated in the builder::
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1845,7 +1991,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1270
+  "size": 1360
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile-discrepancies.js
index c6e40e5d0a283..4467e4ae0572e 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile-discrepancies.js
@@ -6,11 +6,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -41,11 +56,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -81,11 +111,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -116,11 +161,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -154,11 +214,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -189,11 +264,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile.js b/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile.js
index 70e1163cc7a51..09be888288310 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options-with-outFile.js
@@ -118,7 +118,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -131,11 +131,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -160,7 +195,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1184
+  "size": 1334
 }
 
 
@@ -238,7 +273,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAzB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -251,11 +286,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -281,7 +351,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1201
+  "size": 1351
 }
 
 
@@ -355,7 +425,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -368,11 +438,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -397,7 +502,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1184
+  "size": 1334
 }
 
 
@@ -494,7 +599,7 @@ declare module "d" {
 {"version":3,"file":"outFile.d.ts","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";IAAA,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICApB,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICAI,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC;;;ICAnB,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -507,11 +612,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -538,7 +678,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1225
+  "size": 1375
 }
 
 
@@ -598,7 +738,7 @@ declare module "d" {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -611,11 +751,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -640,7 +815,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1184
+  "size": 1334
 }
 
 
@@ -749,7 +924,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -762,11 +937,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -791,7 +1001,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1185
+  "size": 1335
 }
 
 
@@ -882,7 +1092,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoib3V0RmlsZS5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbInByb2plY3QvYS50cyIsInByb2plY3QvYi50cyIsInByb2plY3QvYy50cyIsInByb2plY3QvZC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7O0lBQWEsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsR0FBRyxDQUFDOzs7Ozs7SUNBMUIsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsRUFBRSxDQUFDOzs7Ozs7SUNBRCxRQUFBLENBQUMsR0FBRyxLQUFDLENBQUM7Ozs7OztJQ0FOLFFBQUEsQ0FBQyxHQUFHLEtBQUMsQ0FBQyJ9
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -895,11 +1105,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -925,7 +1170,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1208
+  "size": 1358
 }
 
 
@@ -1003,7 +1248,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,GAAG,CAAC;;;;;;ICA1B,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1016,11 +1261,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1046,6 +1326,6 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1202
+  "size": 1352
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/different-options.js b/tests/baselines/reference/tsbuild/commandLine/different-options.js
index c8f5eb4fa21e3..bba7809b66b9f 100644
--- a/tests/baselines/reference/tsbuild/commandLine/different-options.js
+++ b/tests/baselines/reference/tsbuild/commandLine/different-options.js
@@ -128,7 +128,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,43 +152,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -226,7 +236,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1279
+  "size": 1369
 }
 
 
@@ -314,7 +324,7 @@ exports.d = b_1.b;
 {"version":3,"file":"d.js","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":";;;AAAA,yBAAwB;AAAa,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -338,43 +348,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -413,7 +433,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1296
+  "size": 1386
 }
 
 
@@ -488,7 +508,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -512,43 +532,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -586,7 +616,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1279
+  "size": 1369
 }
 
 
@@ -691,7 +721,7 @@ export declare const d = 10;
 {"version":3,"file":"d.d.ts","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":"AAAwB,eAAO,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -715,43 +745,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -791,7 +831,7 @@ export declare const d = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1320
+  "size": 1410
 }
 
 
@@ -850,7 +890,7 @@ export declare const d = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -874,43 +914,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -948,7 +998,7 @@ export declare const d = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1279
+  "size": 1369
 }
 
 
@@ -1036,7 +1086,7 @@ var aLocal = 100;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1060,43 +1110,53 @@ var aLocal = 100;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1134,7 +1194,7 @@ var aLocal = 100;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1280
+  "size": 1370
 }
 
 
@@ -1226,7 +1286,7 @@ exports.d = b_1.b;
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZC5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbImQudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7O0FBQUEseUJBQXdCO0FBQWEsUUFBQSxDQUFDLEdBQUcsS0FBQyxDQUFDIn0=
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1250,43 +1310,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1325,7 +1395,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1303
+  "size": 1393
 }
 
 
@@ -1407,7 +1477,7 @@ exports.d = b_1.b;
 
 //// [/src/project/d.js.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1431,43 +1501,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1506,6 +1586,6 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1297
+  "size": 1387
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-discrepancies.js
index 9017a491304fc..5d6d04b8f860e 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;"
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -66,19 +71,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;"
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -125,22 +135,28 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -187,22 +203,28 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-discrepancies.js
index c69a05e8b1ed4..080f3aab5f11a 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;"
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -65,19 +70,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;"
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -123,22 +133,28 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -184,22 +200,28 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js
index 42050daabce36..09e16ac254310 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js
@@ -6,11 +6,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -39,11 +54,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile.js
index f653d343e21c7..957c372f74ff9 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental-with-outFile.js
@@ -160,7 +160,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,11 +173,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -201,7 +236,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 917
+  "size": 1067
 }
 
 
@@ -351,7 +386,7 @@ No shapes updated in the builder::
 
 //// [/src/project1/outFile.d.ts] file written with same contents
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -364,11 +399,46 @@ No shapes updated in the builder::
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -392,7 +462,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 931
+  "size": 1081
 }
 
 
@@ -511,7 +581,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -524,11 +594,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -552,7 +657,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 932
+  "size": 1082
 }
 
 
@@ -790,7 +895,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -803,11 +908,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -831,6 +971,6 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 949
+  "size": 1099
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental.js
index c4de7d9de9d1a..0cfdd001384d3 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-declaration-and-incremental.js
@@ -164,7 +164,7 @@ export declare const d = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -188,43 +188,53 @@ export declare const d = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -262,11 +272,11 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1277
+  "size": 1367
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-3497920574-export declare const a = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"-3829150557-export declare const b = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-3497920574-export declare const a = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -292,45 +302,57 @@ export declare const d = 10;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-3497920574-export declare const a = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "-3829150557-export declare const b = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -369,7 +391,7 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1260
+  "size": 1368
 }
 
 
@@ -517,7 +539,7 @@ No shapes updated in the builder::
 
 //// [/src/project1/src/a.d.ts] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -541,43 +563,53 @@ No shapes updated in the builder::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -615,7 +647,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1291
+  "size": 1381
 }
 
 
@@ -734,7 +766,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -758,43 +790,53 @@ exports.d = b_1.b;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -832,11 +874,11 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1292
+  "size": 1382
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-3497920574-export declare const a = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"-3829150557-export declare const b = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":false},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-3497920574-export declare const a = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":false},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -862,45 +904,57 @@ exports.d = b_1.b;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-3497920574-export declare const a = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "-3829150557-export declare const b = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -939,7 +993,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1261
+  "size": 1369
 }
 
 
@@ -1152,7 +1206,7 @@ var blocal = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1176,43 +1230,53 @@ var blocal = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1250,6 +1314,6 @@ var blocal = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1309
+  "size": 1399
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile-discrepancies.js
index b70cecc60e1c4..361b265b8fa8d 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile-discrepancies.js
@@ -6,11 +6,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -41,11 +56,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -77,11 +107,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -111,11 +156,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile.js
index e803a0fc3e06f..71660c5b19958 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline-with-outFile.js
@@ -144,7 +144,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -157,11 +157,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -187,7 +222,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1198
+  "size": 1348
 }
 
 //// [/src/project2/outFile.d.ts]
@@ -203,7 +238,7 @@ declare module "g" {
 
 
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -216,11 +251,46 @@ declare module "g" {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -245,7 +315,7 @@ declare module "g" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1315
+  "size": 1465
 }
 
 
@@ -318,7 +388,7 @@ No shapes updated in the builder::
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -331,11 +401,46 @@ No shapes updated in the builder::
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -361,7 +466,7 @@ No shapes updated in the builder::
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1212
+  "size": 1362
 }
 
 //// [/src/project2/outFile.tsbuildinfo] file changed its modified time
@@ -467,7 +572,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -480,11 +585,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -510,7 +650,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1213
+  "size": 1363
 }
 
 //// [/src/project2/outFile.js]
@@ -535,7 +675,7 @@ define("g", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -548,11 +688,46 @@ define("g", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -577,7 +752,7 @@ define("g", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1316
+  "size": 1466
 }
 
 
@@ -700,7 +875,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -713,11 +888,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -743,7 +953,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1230
+  "size": 1380
 }
 
 //// [/src/project2/outFile.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline.js
index c2470a62d5c51..53b1249b5c53d 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-false-on-commandline.js
@@ -160,7 +160,7 @@ export declare const d = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,43 +184,53 @@ export declare const d = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -259,7 +269,7 @@ export declare const d = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1309
+  "size": 1399
 }
 
 //// [/src/project2/src/e.d.ts]
@@ -275,7 +285,7 @@ export declare const g = 10;
 
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-3497920574-export declare const a = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"-3829150557-export declare const b = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -300,43 +310,61 @@ export declare const g = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3497920574-export declare const a = 10;\n",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3829150557-export declare const b = 10;\n",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -376,7 +404,7 @@ export declare const g = 10;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1344
+  "size": 1476
 }
 
 
@@ -449,7 +477,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -473,43 +501,53 @@ Shape signatures in builder refreshed for::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -548,7 +586,7 @@ Shape signatures in builder refreshed for::
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1323
+  "size": 1413
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo] file changed its modified time
@@ -654,7 +692,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -678,43 +716,53 @@ exports.d = b_1.b;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -753,7 +801,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1324
+  "size": 1414
 }
 
 //// [/src/project2/src/e.js]
@@ -780,7 +828,7 @@ exports.g = b_1.b;
 
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-3497920574-export declare const a = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"-3829150557-export declare const b = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":false},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":false},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -805,43 +853,61 @@ exports.g = b_1.b;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3497920574-export declare const a = 10;\n",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3829150557-export declare const b = 10;\n",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -881,7 +947,7 @@ exports.g = b_1.b;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1345
+  "size": 1477
 }
 
 
@@ -982,7 +1048,7 @@ var blocal = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"2355059555-export const b = 10;const bLocal = 10;const blocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":false},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1006,43 +1072,53 @@ var blocal = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "2355059555-export const b = 10;const bLocal = 10;const blocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1081,7 +1157,7 @@ var blocal = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1341
+  "size": 1431
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-discrepancies.js
index 2db23759dbebb..32b06b98df959 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;"
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -66,19 +71,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;"
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -124,22 +134,28 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -186,22 +202,28 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -251,22 +273,28 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -313,22 +341,28 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-discrepancies.js
index 30b1333bed8d7..84a50b0823c06 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;"
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -65,19 +70,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;"
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -122,22 +132,28 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -183,22 +199,28 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -247,22 +269,28 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -308,22 +336,28 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js
index dd6ccad41597c..e1c4f162e626e 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile-discrepancies.js
@@ -6,11 +6,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -39,11 +54,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile.js
index 0e004c1873b11..0eeaa0f454b3b 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental-with-outFile.js
@@ -158,7 +158,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -171,11 +171,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -199,7 +234,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 917
+  "size": 1067
 }
 
 
@@ -349,7 +384,7 @@ No shapes updated in the builder::
 
 //// [/src/project1/outFile.d.ts] file written with same contents
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -362,11 +397,46 @@ No shapes updated in the builder::
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -390,7 +460,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 931
+  "size": 1081
 }
 
 
@@ -498,7 +568,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -511,11 +581,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -539,7 +644,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 952
+  "size": 1102
 }
 
 
@@ -657,7 +762,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -670,11 +775,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -697,7 +837,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 925
+  "size": 1075
 }
 
 
@@ -877,7 +1017,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -890,11 +1030,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -917,7 +1092,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 943
+  "size": 1093
 }
 
 
@@ -1010,7 +1185,7 @@ No shapes updated in the builder::
 
 //// [/src/project1/outFile.d.ts] file written with same contents
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1023,11 +1198,46 @@ No shapes updated in the builder::
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1051,7 +1261,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 986
+  "size": 1136
 }
 
 
@@ -1160,7 +1370,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1173,11 +1383,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1201,7 +1446,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 1010
+  "size": 1160
 }
 
 
@@ -1344,7 +1589,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1357,11 +1602,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1384,6 +1664,6 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 1005
+  "size": 1155
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental.js
index f940f4cfd561d..826fcd17624d3 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-declaration-and-incremental.js
@@ -162,7 +162,7 @@ export declare const d = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -186,43 +186,53 @@ export declare const d = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -260,11 +270,11 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1277
+  "size": 1367
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-3497920574-export declare const a = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"-3829150557-export declare const b = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-3497920574-export declare const a = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -290,45 +300,57 @@ export declare const d = 10;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-3497920574-export declare const a = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3497920574-export declare const a = 10;\n"
+        "version": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "-3829150557-export declare const b = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -367,7 +389,7 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1260
+  "size": 1368
 }
 
 
@@ -515,7 +537,7 @@ No shapes updated in the builder::
 
 //// [/src/project1/src/a.d.ts] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -539,43 +561,53 @@ No shapes updated in the builder::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -613,7 +645,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1291
+  "size": 1381
 }
 
 
@@ -712,7 +744,7 @@ export declare const aaa = 10;
 
 //// [/src/project1/src/c.d.ts] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -736,43 +768,53 @@ export declare const aaa = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -810,11 +852,11 @@ export declare const aaa = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1344
+  "size": 1434
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"-3829150557-export declare const b = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -840,45 +882,57 @@ export declare const aaa = 10;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "-3829150557-export declare const b = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -917,7 +971,7 @@ export declare const aaa = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1292
+  "size": 1400
 }
 
 
@@ -1035,7 +1089,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1059,43 +1113,53 @@ exports.d = b_1.b;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1132,11 +1196,11 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1317
+  "size": 1407
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"-3829150557-export declare const b = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1162,45 +1226,57 @@ exports.d = b_1.b;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "-3829150557-export declare const b = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3829150557-export declare const b = 10;\n"
+        "version": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1238,7 +1314,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1373
 }
 
 
@@ -1393,7 +1469,7 @@ var alocal = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1417,43 +1493,53 @@ var alocal = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1490,7 +1576,7 @@ var alocal = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1335
+  "size": 1425
 }
 
 
@@ -1582,7 +1668,7 @@ No shapes updated in the builder::
 
 //// [/src/project1/src/b.d.ts] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1606,43 +1692,53 @@ No shapes updated in the builder::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1680,7 +1776,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1378
+  "size": 1468
 }
 
 
@@ -1779,7 +1875,7 @@ export declare const aaaaa = 10;
 
 //// [/src/project1/src/d.d.ts] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","signature":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","signature":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1803,43 +1899,53 @@ export declare const aaaaa = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
-          "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"
+          "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
-        "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"
+        "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1877,11 +1983,11 @@ export declare const aaaaa = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1435
+  "size": 1525
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1907,45 +2013,57 @@ export declare const aaaaa = 10;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"
+        "version": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1984,7 +2102,7 @@ export declare const aaaaa = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1325
+  "size": 1433
 }
 
 
@@ -2097,7 +2215,7 @@ exports.a2 = 10;
 //// [/src/project1/src/d.d.ts] file written with same contents
 //// [/src/project1/src/d.js] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","signature":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","signature":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2121,43 +2239,53 @@ exports.a2 = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
-          "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"
+          "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
-        "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"
+        "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2194,11 +2322,11 @@ exports.a2 = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1462
+  "size": 1552
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":false},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false},{"version":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n","signature":false},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false}],"root":[2,4,6],"options":{"declaration":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":false,"impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","signature":false,"impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":false,"impliedFormat":1},{"version":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n","signature":false,"impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":false,"impliedFormat":1}],"root":[2,4,6],"options":{"declaration":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"changeFileSet":[1,3,5,2,4,6]},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2224,45 +2352,57 @@ exports.a2 = 10;
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-13789510868-export const e = 10;"
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
         "original": {
           "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;"
+        "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
         "original": {
           "version": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"
+        "version": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;"
+        "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2300,6 +2440,6 @@ exports.a2 = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1330
+  "size": 1438
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile-discrepancies.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile-discrepancies.js
index 98ac704ddf1db..73615d3ab3057 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile-discrepancies.js
@@ -6,11 +6,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -41,11 +56,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -76,11 +106,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -110,11 +155,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -147,11 +207,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -181,11 +256,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile.js
index 92d792bb8137a..dccca36821785 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline-with-outFile.js
@@ -142,7 +142,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -155,11 +155,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -185,7 +220,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1198
+  "size": 1348
 }
 
 //// [/src/project2/outFile.d.ts]
@@ -201,7 +236,7 @@ declare module "g" {
 
 
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -214,11 +249,46 @@ declare module "g" {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -243,7 +313,7 @@ declare module "g" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1315
+  "size": 1465
 }
 
 
@@ -316,7 +386,7 @@ No shapes updated in the builder::
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -329,11 +399,46 @@ No shapes updated in the builder::
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -359,7 +464,7 @@ No shapes updated in the builder::
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1212
+  "size": 1362
 }
 
 //// [/src/project2/outFile.tsbuildinfo] file changed its modified time
@@ -454,7 +559,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -467,11 +572,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -497,11 +637,11 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1258
+  "size": 1408
 }
 
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -514,11 +654,46 @@ declare module "d" {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -543,7 +718,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1340
+  "size": 1490
 }
 
 
@@ -647,7 +822,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -660,11 +835,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -689,7 +899,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1231
+  "size": 1381
 }
 
 //// [/src/project2/outFile.js]
@@ -714,7 +924,7 @@ define("g", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -727,11 +937,46 @@ define("g", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -755,7 +1000,7 @@ define("g", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1313
+  "size": 1463
 }
 
 
@@ -859,7 +1104,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -872,11 +1117,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -901,7 +1181,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1249
+  "size": 1399
 }
 
 //// [/src/project2/outFile.tsbuildinfo] file changed its modified time
@@ -956,7 +1236,7 @@ No shapes updated in the builder::
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"106974224-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -969,11 +1249,46 @@ No shapes updated in the builder::
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -999,7 +1314,7 @@ No shapes updated in the builder::
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1292
+  "size": 1442
 }
 
 //// [/src/project2/outFile.tsbuildinfo] file changed its modified time
@@ -1095,7 +1410,7 @@ declare module "d" {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1108,11 +1423,46 @@ declare module "d" {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1138,11 +1488,11 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1348
+  "size": 1498
 }
 
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"emitDeclarationOnly":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1155,11 +1505,46 @@ declare module "d" {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-3908737535-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1184,7 +1569,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1372
+  "size": 1522
 }
 
 
@@ -1313,7 +1698,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/project1/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/a.ts","./src/b.ts","./src/c.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","impliedFormat":1},{"version":"-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1326,11 +1711,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/d.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./src/a.ts": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-      "./src/b.ts": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
-      "./src/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./src/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./src/a.ts": {
+        "original": {
+          "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/b.ts": {
+        "original": {
+          "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1355,12 +1775,12 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1369
+  "size": 1519
 }
 
 //// [/src/project2/outFile.js] file written with same contents
 //// [/src/project2/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","-13789510868-export const e = 10;","-4849089835-import { a } from \"a\"; export const f = a;","-18341999015-import { b } from \"b\"; export const g = b;"],"root":[[3,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../project1/outfile.d.ts","./src/e.ts","./src/f.ts","./src/g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","impliedFormat":1},{"version":"-13789510868-export const e = 10;","impliedFormat":1},{"version":"-4849089835-import { a } from \"a\"; export const f = a;","impliedFormat":1},{"version":"-18341999015-import { b } from \"b\"; export const g = b;","impliedFormat":1}],"root":[[3,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-12964815745-declare module \"e\" {\n    export const e = 10;\n}\ndeclare module \"f\" {\n    export const f = 10;\n}\ndeclare module \"g\" {\n    export const g = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1373,11 +1793,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./src/g.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../project1/outfile.d.ts": "1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
-      "./src/e.ts": "-13789510868-export const e = 10;",
-      "./src/f.ts": "-4849089835-import { a } from \"a\"; export const f = a;",
-      "./src/g.ts": "-18341999015-import { b } from \"b\"; export const g = b;"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../project1/outfile.d.ts": {
+        "original": {
+          "version": "1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "1646858368-declare module \"a\" {\n    export const a = 10;\n    export const aaa = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n    export const aaaaa = 10;\n    export const a2 = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./src/e.ts": {
+        "original": {
+          "version": "-13789510868-export const e = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13789510868-export const e = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/f.ts": {
+        "original": {
+          "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+          "impliedFormat": 1
+        },
+        "version": "-4849089835-import { a } from \"a\"; export const f = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./src/g.ts": {
+        "original": {
+          "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+          "impliedFormat": 1
+        },
+        "version": "-18341999015-import { b } from \"b\"; export const g = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1401,6 +1856,6 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1371
+  "size": 1521
 }
 
diff --git a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline.js b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline.js
index 75371da8cc561..5951d004bd386 100644
--- a/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline.js
+++ b/tests/baselines/reference/tsbuild/commandLine/emitDeclarationOnly-on-commandline.js
@@ -158,7 +158,7 @@ export declare const d = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,43 +182,53 @@ export declare const d = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -257,7 +267,7 @@ export declare const d = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1309
+  "size": 1399
 }
 
 //// [/src/project2/src/e.d.ts]
@@ -273,7 +283,7 @@ export declare const g = 10;
 
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-3497920574-export declare const a = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"-3829150557-export declare const b = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -298,43 +308,61 @@ export declare const g = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3497920574-export declare const a = 10;\n",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3829150557-export declare const b = 10;\n",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -374,7 +402,7 @@ export declare const g = 10;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1344
+  "size": 1476
 }
 
 
@@ -447,7 +475,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16597586570-export const a = 10;const aLocal = 10;const aa = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -471,43 +499,53 @@ Shape signatures in builder refreshed for::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16597586570-export const a = 10;const aLocal = 10;const aa = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -546,7 +584,7 @@ Shape signatures in builder refreshed for::
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1323
+  "size": 1413
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo] file changed its modified time
@@ -635,7 +673,7 @@ export declare const aaa = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -659,43 +697,53 @@ export declare const aaa = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -734,11 +782,11 @@ export declare const aaa = 10;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1376
+  "size": 1466
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"-3829150557-export declare const b = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -763,43 +811,61 @@ export declare const aaa = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3829150557-export declare const b = 10;\n",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -839,7 +905,7 @@ export declare const aaa = 10;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1376
+  "size": 1508
 }
 
 
@@ -943,7 +1009,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -967,43 +1033,53 @@ exports.d = b_1.b;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1041,7 +1117,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1349
+  "size": 1439
 }
 
 //// [/src/project2/src/e.js]
@@ -1068,7 +1144,7 @@ exports.g = b_1.b;
 
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"-3829150557-export declare const b = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1093,43 +1169,61 @@ exports.g = b_1.b;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-3829150557-export declare const b = 10;\n",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1168,7 +1262,7 @@ exports.g = b_1.b;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1349
+  "size": 1481
 }
 
 
@@ -1249,7 +1343,7 @@ var alocal = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1273,43 +1367,53 @@ var alocal = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2761163262-export const b = 10;const bLocal = 10;const alocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1347,7 +1451,7 @@ var alocal = 10;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1367
+  "size": 1457
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo] file changed its modified time
@@ -1402,7 +1506,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1426,43 +1530,53 @@ Shape signatures in builder refreshed for::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-3037017594-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1501,7 +1615,7 @@ Shape signatures in builder refreshed for::
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1410
+  "size": 1500
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo] file changed its modified time
@@ -1590,7 +1704,7 @@ export declare const aaaaa = 10;
 
 
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","signature":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;","signature":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1614,43 +1728,53 @@ export declare const aaaaa = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
-          "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"
+          "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-7233149715-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;",
-        "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"
+        "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1689,11 +1813,11 @@ export declare const aaaaa = 10;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1467
+  "size": 1557
 }
 
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true,"emitDeclarationOnly":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1718,43 +1842,61 @@ export declare const aaaaa = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
-        "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n"
+        "signature": "2661550180-export declare const b = 10;\nexport declare const aaaaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1794,7 +1936,7 @@ export declare const aaaaa = 10;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1409
+  "size": 1541
 }
 
 
@@ -1896,7 +2038,7 @@ exports.a2 = 10;
 //// [/src/project1/src/c.js] file written with same contents
 //// [/src/project1/src/d.js] file written with same contents
 //// [/src/project1/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"},{"version":"-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","signature":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;","signature":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;","signature":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project1/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1920,43 +2062,53 @@ exports.a2 = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+          "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6435489413-export const a = 10;const aLocal = 10;const aa = 10;export const aaa = 10;",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
-          "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"
+          "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18124257118-export const b = 10;const bLocal = 10;const alocal = 10;const aaaa = 10;export const aaaaa = 10;export const a2 = 10;",
-        "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"
+        "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1994,14 +2146,14 @@ exports.a2 = 10;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1494
+  "size": 1584
 }
 
 //// [/src/project2/src/e.js] file written with same contents
 //// [/src/project2/src/f.js] file written with same contents
 //// [/src/project2/src/g.js] file written with same contents
 //// [/src/project2/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n"},"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n"},"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n"}],"root":[2,4,6],"options":{"composite":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./e.ts","../../project1/src/a.d.ts","./f.ts","../../project1/src/b.d.ts","./g.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13789510868-export const e = 10;","signature":"-4822840506-export declare const e = 10;\n","impliedFormat":1},{"version":"-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n","impliedFormat":1},{"version":"-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;","signature":"-5154070489-export declare const f = 10;\n","impliedFormat":1},{"version":"-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n","impliedFormat":1},{"version":"-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;","signature":"-5485300472-export declare const g = 10;\n","impliedFormat":1}],"root":[2,4,6],"options":{"composite":true},"fileIdsList":[[3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,3,5,2,4,6],"latestChangedDtsFile":"./g.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2026,43 +2178,61 @@ exports.a2 = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-13789510868-export const e = 10;",
-          "signature": "-4822840506-export declare const e = 10;\n"
+          "signature": "-4822840506-export declare const e = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13789510868-export const e = 10;",
-        "signature": "-4822840506-export declare const e = 10;\n"
+        "signature": "-4822840506-export declare const e = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/a.d.ts": {
+        "original": {
+          "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
-        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n"
+        "signature": "-1973399231-export declare const a = 10;\nexport declare const aaa = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./f.ts": {
         "original": {
           "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-          "signature": "-5154070489-export declare const f = 10;\n"
+          "signature": "-5154070489-export declare const f = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2015135303-import { a } from \"../../project1/src/a\"; export const f = a;",
-        "signature": "-5154070489-export declare const f = 10;\n"
+        "signature": "-5154070489-export declare const f = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../../project1/src/b.d.ts": {
+        "original": {
+          "version": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+          "impliedFormat": 1
+        },
         "version": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
-        "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n"
+        "signature": "-2237944013-export declare const b = 10;\nexport declare const aaaaa = 10;\nexport declare const a2 = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./g.ts": {
         "original": {
           "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-          "signature": "-5485300472-export declare const g = 10;\n"
+          "signature": "-5485300472-export declare const g = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-2047954019-import { b } from \"../../project1/src/b\"; export const g = b;",
-        "signature": "-5485300472-export declare const g = 10;\n"
+        "signature": "-5485300472-export declare const g = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2101,6 +2271,6 @@ exports.a2 = 10;
     "latestChangedDtsFile": "./g.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1414
+  "size": 1546
 }
 
diff --git a/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file-discrepancies.js b/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file-discrepancies.js
index c9bdc6828e595..cb241b5deea71 100644
--- a/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file-discrepancies.js
@@ -8,13 +8,16 @@ CleanBuild:
     "fileInfos": {
       "../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "4646078106-export function foo() { }"
+        "version": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "1045484683-export function bar() { }"
+        "version": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -46,13 +49,16 @@ IncrementalBuild:
     "fileInfos": {
       "../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "4646078106-export function foo() { }"
+        "version": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "1045484683-export function bar() { }"
+        "version": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file.js b/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file.js
index 94eb44935e92b..f868766edc4d1 100644
--- a/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file.js
+++ b/tests/baselines/reference/tsbuild/configFileErrors/reports-syntax-errors-in-config-file.js
@@ -48,7 +48,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":false},{"version":"1045484683-export function bar() { }","signature":false}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":false,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":false,"impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -63,24 +63,30 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "4646078106-export function foo() { }"
+        "version": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "1045484683-export function bar() { }"
+        "version": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -104,7 +110,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 823
+  "size": 877
 }
 
 
@@ -161,7 +167,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"9819159940-export function foo() { }export function fooBar() { }","signature":false},{"version":"1045484683-export function bar() { }","signature":false}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"9819159940-export function foo() { }export function fooBar() { }","signature":false,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":false,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,24 +182,30 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9819159940-export function foo() { }export function fooBar() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "9819159940-export function foo() { }export function fooBar() { }"
+        "version": "9819159940-export function foo() { }export function fooBar() { }",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "1045484683-export function bar() { }"
+        "version": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +230,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 870
+  "size": 924
 }
 
 
@@ -289,7 +301,7 @@ function bar() { }
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9819159940-export function foo() { }export function fooBar() { }","signature":"-9218003498-export declare function foo(): void;\nexport declare function fooBar(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9819159940-export function foo() { }export function fooBar() { }","signature":"-9218003498-export declare function foo(): void;\nexport declare function fooBar(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -303,27 +315,33 @@ function bar() { }
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9819159940-export function foo() { }export function fooBar() { }",
-          "signature": "-9218003498-export declare function foo(): void;\nexport declare function fooBar(): void;\n"
+          "signature": "-9218003498-export declare function foo(): void;\nexport declare function fooBar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "9819159940-export function foo() { }export function fooBar() { }",
-        "signature": "-9218003498-export declare function foo(): void;\nexport declare function fooBar(): void;\n"
+        "signature": "-9218003498-export declare function foo(): void;\nexport declare function fooBar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -349,6 +367,6 @@ function bar() { }
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1034
+  "size": 1088
 }
 
diff --git a/tests/baselines/reference/tsbuild/configFileExtends/when-building-project-uses-reference-and-both-extend-config-with-include.js b/tests/baselines/reference/tsbuild/configFileExtends/when-building-project-uses-reference-and-both-extend-config-with-include.js
index 5ced465072d38..e010b2a1ed581 100644
--- a/tests/baselines/reference/tsbuild/configFileExtends/when-building-project-uses-reference-and-both-extend-config-with-include.js
+++ b/tests/baselines/reference/tsbuild/configFileExtends/when-building-project-uses-reference-and-both-extend-config-with-include.js
@@ -112,7 +112,7 @@ exports.a = 1;
 
 
 //// [/src/target-tsc-build/shared/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../../shared/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-22125360210-export const a: Unrestricted = 1;","signature":"115643418-export declare const a: Unrestricted;\n"},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../../shared/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22125360210-export const a: Unrestricted = 1;","signature":"115643418-export declare const a: Unrestricted;\n","impliedFormat":1},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/target-tsc-build/shared/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -126,28 +126,34 @@ exports.a = 1;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../shared/index.ts": {
         "original": {
           "version": "-22125360210-export const a: Unrestricted = 1;",
-          "signature": "115643418-export declare const a: Unrestricted;\n"
+          "signature": "115643418-export declare const a: Unrestricted;\n",
+          "impliedFormat": 1
         },
         "version": "-22125360210-export const a: Unrestricted = 1;",
-        "signature": "115643418-export declare const a: Unrestricted;\n"
+        "signature": "115643418-export declare const a: Unrestricted;\n",
+        "impliedFormat": "commonjs"
       },
       "../../shared/typings-base/globals.d.ts": {
         "original": {
           "version": "4725476611-type Unrestricted = any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4725476611-type Unrestricted = any;",
         "signature": "4725476611-type Unrestricted = any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -174,7 +180,7 @@ exports.a = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1004
+  "size": 1058
 }
 
 //// [/src/target-tsc-build/webpack/index.d.ts]
@@ -189,7 +195,7 @@ exports.b = 1;
 
 
 //// [/src/target-tsc-build/webpack/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../../webpack/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14405273073-export const b: Unrestricted = 1;","signature":"-6010538469-export declare const b: Unrestricted;\n"},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../../webpack/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14405273073-export const b: Unrestricted = 1;","signature":"-6010538469-export declare const b: Unrestricted;\n","impliedFormat":1},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/target-tsc-build/webpack/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -203,28 +209,34 @@ exports.b = 1;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../webpack/index.ts": {
         "original": {
           "version": "-14405273073-export const b: Unrestricted = 1;",
-          "signature": "-6010538469-export declare const b: Unrestricted;\n"
+          "signature": "-6010538469-export declare const b: Unrestricted;\n",
+          "impliedFormat": 1
         },
         "version": "-14405273073-export const b: Unrestricted = 1;",
-        "signature": "-6010538469-export declare const b: Unrestricted;\n"
+        "signature": "-6010538469-export declare const b: Unrestricted;\n",
+        "impliedFormat": "commonjs"
       },
       "../../shared/typings-base/globals.d.ts": {
         "original": {
           "version": "4725476611-type Unrestricted = any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4725476611-type Unrestricted = any;",
         "signature": "4725476611-type Unrestricted = any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -251,6 +263,6 @@ exports.b = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1007
+  "size": 1061
 }
 
diff --git a/tests/baselines/reference/tsbuild/configFileExtends/when-building-solution-with-projects-extends-config-with-include.js b/tests/baselines/reference/tsbuild/configFileExtends/when-building-solution-with-projects-extends-config-with-include.js
index 733c5a3860a5a..04f56e63b37bd 100644
--- a/tests/baselines/reference/tsbuild/configFileExtends/when-building-solution-with-projects-extends-config-with-include.js
+++ b/tests/baselines/reference/tsbuild/configFileExtends/when-building-solution-with-projects-extends-config-with-include.js
@@ -113,7 +113,7 @@ exports.a = 1;
 
 
 //// [/src/target-tsc-build/shared/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../../shared/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-22125360210-export const a: Unrestricted = 1;","signature":"115643418-export declare const a: Unrestricted;\n"},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../../shared/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22125360210-export const a: Unrestricted = 1;","signature":"115643418-export declare const a: Unrestricted;\n","impliedFormat":1},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/target-tsc-build/shared/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -127,28 +127,34 @@ exports.a = 1;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../shared/index.ts": {
         "original": {
           "version": "-22125360210-export const a: Unrestricted = 1;",
-          "signature": "115643418-export declare const a: Unrestricted;\n"
+          "signature": "115643418-export declare const a: Unrestricted;\n",
+          "impliedFormat": 1
         },
         "version": "-22125360210-export const a: Unrestricted = 1;",
-        "signature": "115643418-export declare const a: Unrestricted;\n"
+        "signature": "115643418-export declare const a: Unrestricted;\n",
+        "impliedFormat": "commonjs"
       },
       "../../shared/typings-base/globals.d.ts": {
         "original": {
           "version": "4725476611-type Unrestricted = any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4725476611-type Unrestricted = any;",
         "signature": "4725476611-type Unrestricted = any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -175,7 +181,7 @@ exports.a = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1004
+  "size": 1058
 }
 
 //// [/src/target-tsc-build/webpack/index.d.ts]
@@ -190,7 +196,7 @@ exports.b = 1;
 
 
 //// [/src/target-tsc-build/webpack/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../../webpack/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14405273073-export const b: Unrestricted = 1;","signature":"-6010538469-export declare const b: Unrestricted;\n"},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../../webpack/index.ts","../../shared/typings-base/globals.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14405273073-export const b: Unrestricted = 1;","signature":"-6010538469-export declare const b: Unrestricted;\n","impliedFormat":1},{"version":"4725476611-type Unrestricted = any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../.."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/target-tsc-build/webpack/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -204,28 +210,34 @@ exports.b = 1;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../webpack/index.ts": {
         "original": {
           "version": "-14405273073-export const b: Unrestricted = 1;",
-          "signature": "-6010538469-export declare const b: Unrestricted;\n"
+          "signature": "-6010538469-export declare const b: Unrestricted;\n",
+          "impliedFormat": 1
         },
         "version": "-14405273073-export const b: Unrestricted = 1;",
-        "signature": "-6010538469-export declare const b: Unrestricted;\n"
+        "signature": "-6010538469-export declare const b: Unrestricted;\n",
+        "impliedFormat": "commonjs"
       },
       "../../shared/typings-base/globals.d.ts": {
         "original": {
           "version": "4725476611-type Unrestricted = any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4725476611-type Unrestricted = any;",
         "signature": "4725476611-type Unrestricted = any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -252,6 +264,6 @@ exports.b = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1007
+  "size": 1061
 }
 
diff --git a/tests/baselines/reference/tsbuild/containerOnlyReferenced/verify-that-subsequent-builds-after-initial-build-doesnt-build-anything.js b/tests/baselines/reference/tsbuild/containerOnlyReferenced/verify-that-subsequent-builds-after-initial-build-doesnt-build-anything.js
index 6ab89de627a27..fe2943cc149f6 100644
--- a/tests/baselines/reference/tsbuild/containerOnlyReferenced/verify-that-subsequent-builds-after-initial-build-doesnt-build-anything.js
+++ b/tests/baselines/reference/tsbuild/containerOnlyReferenced/verify-that-subsequent-builds-after-initial-build-doesnt-build-anything.js
@@ -129,7 +129,7 @@ exports.x = 10;
 
 
 //// [/src/src/folder/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/src/folder/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -142,19 +142,23 @@ exports.x = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -174,7 +178,7 @@ exports.x = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 820
+  "size": 856
 }
 
 //// [/src/src/folder2/index.d.ts]
@@ -189,7 +193,7 @@ exports.x = 10;
 
 
 //// [/src/src/folder2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/src/folder2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -202,19 +206,23 @@ exports.x = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -234,7 +242,7 @@ exports.x = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 820
+  "size": 856
 }
 
 //// [/src/tests/index.d.ts]
@@ -249,7 +257,7 @@ exports.x = 10;
 
 
 //// [/src/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -262,19 +270,23 @@ exports.x = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -294,7 +306,7 @@ exports.x = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 817
+  "size": 853
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/containerOnlyReferenced/when-solution-is-referenced-indirectly.js b/tests/baselines/reference/tsbuild/containerOnlyReferenced/when-solution-is-referenced-indirectly.js
index 591c50140ad2a..c9bd98ecd789b 100644
--- a/tests/baselines/reference/tsbuild/containerOnlyReferenced/when-solution-is-referenced-indirectly.js
+++ b/tests/baselines/reference/tsbuild/containerOnlyReferenced/when-solution-is-referenced-indirectly.js
@@ -116,7 +116,7 @@ exports.b = 10;
 
 
 //// [/src/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13368947479-export const b = 10;","signature":"-3829150557-export declare const b = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13368947479-export const b = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -129,19 +129,23 @@ exports.b = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-13368947479-export const b = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13368947479-export const b = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -161,7 +165,7 @@ exports.b = 10;
     "latestChangedDtsFile": "./src/b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 817
+  "size": 853
 }
 
 //// [/src/project3/src/c.d.ts]
@@ -176,7 +180,7 @@ exports.c = 10;
 
 
 //// [/src/project3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/c.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12077479510-export const c = 10;","signature":"-4160380540-export declare const c = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/c.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/c.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12077479510-export const c = 10;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/c.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -189,19 +193,23 @@ exports.c = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "-12077479510-export const c = 10;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-12077479510-export const c = 10;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +229,7 @@ exports.c = 10;
     "latestChangedDtsFile": "./src/c.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 817
+  "size": 853
 }
 
 //// [/src/project4/src/d.d.ts]
@@ -236,7 +244,7 @@ exports.d = 10;
 
 
 //// [/src/project4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10786011541-export const d = 10;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10786011541-export const d = 10;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -249,19 +257,23 @@ exports.d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/d.ts": {
         "original": {
           "version": "-10786011541-export const d = 10;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10786011541-export const d = 10;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -281,7 +293,7 @@ exports.d = 10;
     "latestChangedDtsFile": "./src/d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 817
+  "size": 853
 }
 
 
@@ -336,7 +348,7 @@ exports.cc = 10;
 
 
 //// [/src/project3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/c.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12481904019-export const cc = 10;","signature":"-2549218137-export declare const cc = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/c.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/c.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12481904019-export const cc = 10;","signature":"-2549218137-export declare const cc = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/c.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,19 +361,23 @@ exports.cc = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "-12481904019-export const cc = 10;",
-          "signature": "-2549218137-export declare const cc = 10;\n"
+          "signature": "-2549218137-export declare const cc = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-12481904019-export const cc = 10;",
-        "signature": "-2549218137-export declare const cc = 10;\n"
+        "signature": "-2549218137-export declare const cc = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -381,7 +397,7 @@ exports.cc = 10;
     "latestChangedDtsFile": "./src/c.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 819
+  "size": 855
 }
 
 //// [/src/project4/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash-but-uses-no-references.js b/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash-but-uses-no-references.js
index 6595695655148..a13d91bea8107 100644
--- a/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash-but-uses-no-references.js
+++ b/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash-but-uses-no-references.js
@@ -172,7 +172,7 @@ function getVar() {
 
 
 //// [/src/solution/lib/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../src/common/types.d.ts","../src/common/nominal.ts","../src/subproject/index.ts","../src/subproject2/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true},{"version":"-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;","signature":"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"},{"version":"-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;","signature":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"},{"version":"2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}","signature":"-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"}],"root":[[2,5]],"options":{"composite":true,"outDir":"./","rootDir":".."},"fileIdsList":[[2],[3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./src/subProject2/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../src/common/types.d.ts","../src/common/nominal.ts","../src/subproject/index.ts","../src/subproject2/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;","signature":"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n","impliedFormat":1},{"version":"-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;","signature":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","impliedFormat":1},{"version":"2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}","signature":"-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"outDir":"./","rootDir":".."},"fileIdsList":[[2],[3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./src/subProject2/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/solution/lib/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -199,44 +199,54 @@ function getVar() {
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/common/types.d.ts": {
         "original": {
           "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
         "signature": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/common/nominal.ts": {
         "original": {
           "version": "-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;",
-          "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"
+          "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+          "impliedFormat": 1
         },
         "version": "-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;",
-        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"
+        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/subproject/index.ts": {
         "original": {
           "version": "-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;",
-          "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+          "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+          "impliedFormat": 1
         },
         "version": "-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;",
-        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/subproject2/index.ts": {
         "original": {
           "version": "2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}",
-          "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"
+          "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}",
-        "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"
+        "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -279,6 +289,6 @@ function getVar() {
     "latestChangedDtsFile": "./src/subProject2/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2047
+  "size": 2137
 }
 
diff --git a/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash.js b/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash.js
index 1ffa242565da1..af7fef9202e0a 100644
--- a/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash.js
+++ b/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-is-referenced-through-triple-slash.js
@@ -155,7 +155,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/src/solution/lib/src/common/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../lib/lib.d.ts","../../../src/common/types.d.ts","../../../src/common/nominal.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true},{"version":"-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;","signature":"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"}],"root":[3],"options":{"composite":true,"outDir":"../..","rootDir":"../../.."},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./nominal.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../lib/lib.d.ts","../../../src/common/types.d.ts","../../../src/common/nominal.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;","signature":"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"outDir":"../..","rootDir":"../../.."},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./nominal.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/solution/lib/src/common/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,28 +174,34 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../src/common/types.d.ts": {
         "original": {
           "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
         "signature": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../src/common/nominal.ts": {
         "original": {
           "version": "-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;",
-          "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"
+          "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+          "impliedFormat": 1
         },
         "version": "-8103970050-/// <reference path=\"./types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;",
-        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"
+        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -222,7 +228,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./nominal.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1314
+  "size": 1368
 }
 
 //// [/src/solution/lib/src/subProject/index.d.ts]
@@ -236,7 +242,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/src/solution/lib/src/subProject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../lib/lib.d.ts","../../../src/common/types.d.ts","../common/nominal.d.ts","../../../src/subproject/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true},"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",{"version":"-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;","signature":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"}],"root":[4],"options":{"composite":true,"outDir":"../..","rootDir":"../../.."},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../lib/lib.d.ts","../../../src/common/types.d.ts","../common/nominal.d.ts","../../../src/subproject/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true,"impliedFormat":1},{"version":"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n","impliedFormat":1},{"version":"-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;","signature":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"../..","rootDir":"../../.."},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/solution/lib/src/subProject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,32 +265,43 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../src/common/types.d.ts": {
         "original": {
           "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
         "signature": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../common/nominal.d.ts": {
+        "original": {
+          "version": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+          "impliedFormat": 1
+        },
         "version": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
-        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"
+        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+        "impliedFormat": "commonjs"
       },
       "../../../src/subproject/index.ts": {
         "original": {
           "version": "-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;",
-          "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+          "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+          "impliedFormat": 1
         },
         "version": "-25117049605-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;",
-        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -315,7 +332,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1436
+  "size": 1520
 }
 
 //// [/src/solution/lib/src/subProject2/index.d.ts]
@@ -340,7 +357,7 @@ function getVar() {
 
 
 //// [/src/solution/lib/src/subProject2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../lib/lib.d.ts","../../../src/common/types.d.ts","../common/nominal.d.ts","../subproject/index.d.ts","../../../src/subproject2/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true},"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n","-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",{"version":"2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}","signature":"-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"}],"root":[5],"options":{"composite":true,"outDir":"../..","rootDir":"../../.."},"fileIdsList":[[2],[3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,3,4,2,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../lib/lib.d.ts","../../../src/common/types.d.ts","../common/nominal.d.ts","../subproject/index.d.ts","../../../src/subproject2/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};","affectsGlobalScope":true,"impliedFormat":1},{"version":"-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n","impliedFormat":1},{"version":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","impliedFormat":1},{"version":"2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}","signature":"-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"outDir":"../..","rootDir":"../../.."},"fileIdsList":[[2],[3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,3,4,2,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/solution/lib/src/subProject2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -367,36 +384,52 @@ function getVar() {
       "../../../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../src/common/types.d.ts": {
         "original": {
           "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
         "signature": "23815050294-declare type MyNominal<T, Name extends string> = T & {\n    specialKey: Name;\n};",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../common/nominal.d.ts": {
+        "original": {
+          "version": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+          "impliedFormat": 1
+        },
         "version": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
-        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n"
+        "signature": "-29966695877-/// <reference path=\"../../../src/common/types.d.ts\" preserve=\"true\" />\nexport declare type Nominal<T, Name extends string> = MyNominal<T, Name>;\n",
+        "impliedFormat": "commonjs"
       },
       "../subproject/index.d.ts": {
+        "original": {
+          "version": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+          "impliedFormat": 1
+        },
         "version": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
-        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+        "impliedFormat": "commonjs"
       },
       "../../../src/subproject2/index.ts": {
         "original": {
           "version": "2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}",
-          "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"
+          "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "2747033208-import { MyNominal } from '../subProject/index';\nconst variable = {\n    key: 'value' as MyNominal,\n};\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}",
-        "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"
+        "signature": "-29417180885-import { MyNominal } from '../subProject/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -431,6 +464,6 @@ function getVar() {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1740
+  "size": 1854
 }
 
diff --git a/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-used-inferred-type-from-referenced-project.js b/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-used-inferred-type-from-referenced-project.js
index d16f98e9da56b..5d9154ef86fb4 100644
--- a/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-used-inferred-type-from-referenced-project.js
+++ b/tests/baselines/reference/tsbuild/declarationEmit/when-declaration-file-used-inferred-type-from-referenced-project.js
@@ -104,7 +104,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/src/packages/pkg1/lib/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-2072077482-export interface IThing {\n  a: string;\n}\nexport interface IThings {\n  thing1: IThing;\n}","signature":"-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2072077482-export interface IThing {\n  a: string;\n}\nexport interface IThings {\n  thing1: IThing;\n}","signature":"-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/packages/pkg1/lib/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -117,19 +117,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/index.ts": {
         "original": {
           "version": "-2072077482-export interface IThing {\n  a: string;\n}\nexport interface IThings {\n  thing1: IThing;\n}",
-          "signature": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n"
+          "signature": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2072077482-export interface IThing {\n  a: string;\n}\nexport interface IThings {\n  thing1: IThing;\n}",
-        "signature": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n"
+        "signature": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -150,7 +154,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 985
+  "size": 1021
 }
 
 //// [/src/packages/pkg2/lib/src/index.d.ts]
@@ -168,7 +172,7 @@ function fn4() {
 
 
 //// [/src/packages/pkg2/lib/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../pkg1/lib/src/index.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n",{"version":"8515046367-import { IThings } from '@fluentui/pkg1';\nexport function fn4() {\n  const a: IThings = { thing1: { a: 'b' } };\n  return a.thing1;\n}","signature":"-8485768540-export declare function fn4(): import(\"@fluentui/pkg1\").IThing;\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../pkg1/lib/src/index.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n","impliedFormat":1},{"version":"8515046367-import { IThings } from '@fluentui/pkg1';\nexport function fn4() {\n  const a: IThings = { thing1: { a: 'b' } };\n  return a.thing1;\n}","signature":"-8485768540-export declare function fn4(): import(\"@fluentui/pkg1\").IThing;\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/packages/pkg2/lib/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -187,23 +191,32 @@ function fn4() {
       "../../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../pkg1/lib/src/index.d.ts": {
+        "original": {
+          "version": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n",
-        "signature": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n"
+        "signature": "-6291959392-export interface IThing {\n    a: string;\n}\nexport interface IThings {\n    thing1: IThing;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/index.ts": {
         "original": {
           "version": "8515046367-import { IThings } from '@fluentui/pkg1';\nexport function fn4() {\n  const a: IThings = { thing1: { a: 'b' } };\n  return a.thing1;\n}",
-          "signature": "-8485768540-export declare function fn4(): import(\"@fluentui/pkg1\").IThing;\n"
+          "signature": "-8485768540-export declare function fn4(): import(\"@fluentui/pkg1\").IThing;\n",
+          "impliedFormat": 1
         },
         "version": "8515046367-import { IThings } from '@fluentui/pkg1';\nexport function fn4() {\n  const a: IThings = { thing1: { a: 'b' } };\n  return a.thing1;\n}",
-        "signature": "-8485768540-export declare function fn4(): import(\"@fluentui/pkg1\").IThing;\n"
+        "signature": "-8485768540-export declare function fn4(): import(\"@fluentui/pkg1\").IThing;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -229,6 +242,6 @@ function fn4() {
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1168
+  "size": 1234
 }
 
diff --git a/tests/baselines/reference/tsbuild/demo/in-bad-ref-branch-reports-the-error-about-files-not-in-rootDir-at-the-import-location.js b/tests/baselines/reference/tsbuild/demo/in-bad-ref-branch-reports-the-error-about-files-not-in-rootDir-at-the-import-location.js
index cb8c1581fc1f5..87171c86b52d5 100644
--- a/tests/baselines/reference/tsbuild/demo/in-bad-ref-branch-reports-the-error-about-files-not-in-rootDir-at-the-import-location.js
+++ b/tests/baselines/reference/tsbuild/demo/in-bad-ref-branch-reports-the-error-about-files-not-in-rootDir-at-the-import-location.js
@@ -220,7 +220,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/dog.ts","../../animals/index.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n"],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"fileIdsList":[[4,5],[2,3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,2,3,4,[5,[{"file":"../../core/utilities.ts","start":0,"length":32,"messageText":"'A' is declared but its value is never read.","category":1,"code":6133,"reportsUnnecessary":true}]]],"affectedFilesPendingEmit":[2,3,4,5],"emitSignatures":[2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/dog.ts","../../animals/index.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"fileIdsList":[[4,5],[2,3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,2,3,4,[5,[{"file":"../../core/utilities.ts","start":0,"length":32,"messageText":"'A' is declared but its value is never read.","category":1,"code":6133,"reportsUnnecessary":true}]]],"affectedFilesPendingEmit":[2,3,4,5],"emitSignatures":[2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -249,27 +249,49 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
+        "original": {
+          "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n"
+        "signature": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
+        "original": {
+          "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
+        },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
+        "original": {
+          "version": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n"
+        "signature": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -350,6 +372,6 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2200
+  "size": 2338
 }
 
diff --git a/tests/baselines/reference/tsbuild/demo/in-master-branch-with-everything-setup-correctly-and-reports-no-error.js b/tests/baselines/reference/tsbuild/demo/in-master-branch-with-everything-setup-correctly-and-reports-no-error.js
index 62e491858cc7d..549eda6cd89de 100644
--- a/tests/baselines/reference/tsbuild/demo/in-master-branch-with-everything-setup-correctly-and-reports-no-error.js
+++ b/tests/baselines/reference/tsbuild/demo/in-master-branch-with-everything-setup-correctly-and-reports-no-error.js
@@ -217,7 +217,7 @@ Object.defineProperty(exports, "createDog", { enumerable: true, get: function ()
 
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../core/utilities.d.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"},"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../core/utilities.d.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -243,35 +243,51 @@ Object.defineProperty(exports, "createDog", { enumerable: true, get: function ()
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
         "original": {
           "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
         },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../core/utilities.d.ts": {
+        "original": {
+          "version": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
+        },
         "version": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
         "original": {
           "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
         },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -321,11 +337,11 @@ Object.defineProperty(exports, "createDog", { enumerable: true, get: function ()
     "latestChangedDtsFile": "./dog.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2221
+  "size": 2335
 }
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"}],"root":[2],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./utilities.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./utilities.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -338,19 +354,23 @@ Object.defineProperty(exports, "createDog", { enumerable: true, get: function ()
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
         "original": {
           "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
         },
         "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -380,7 +400,7 @@ Object.defineProperty(exports, "createDog", { enumerable: true, get: function ()
     "latestChangedDtsFile": "./utilities.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1324
+  "size": 1360
 }
 
 //// [/user/username/projects/demo/lib/core/utilities.d.ts]
@@ -404,7 +424,7 @@ function lastElementOf(arr) {
 
 
 //// [/user/username/projects/demo/lib/zoo/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../animals/animal.d.ts","../animals/dog.d.ts","../animals/index.d.ts","../../zoo/zoo.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",{"version":"13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n","signature":"10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../zoo","strict":true,"target":1},"fileIdsList":[[4],[2,3]],"referencedMap":[[3,1],[4,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./zoo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../animals/animal.d.ts","../animals/dog.d.ts","../animals/index.d.ts","../../zoo/zoo.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1},{"version":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n","signature":"10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../zoo","strict":true,"target":1},"fileIdsList":[[4],[2,3]],"referencedMap":[[3,1],[4,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./zoo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/zoo/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -429,31 +449,50 @@ function lastElementOf(arr) {
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../animals/animal.d.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../animals/dog.d.ts": {
+        "original": {
+          "version": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
+        },
         "version": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       },
       "../animals/index.d.ts": {
+        "original": {
+          "version": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
+        },
         "version": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../zoo/zoo.ts": {
         "original": {
           "version": "13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n",
-          "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n"
+          "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n",
+          "impliedFormat": 1
         },
         "version": "13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n",
-        "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n"
+        "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -497,7 +536,7 @@ function lastElementOf(arr) {
     "latestChangedDtsFile": "./zoo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1763
+  "size": 1889
 }
 
 //// [/user/username/projects/demo/lib/zoo/zoo.d.ts]
diff --git a/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly-and-declarationMap.js b/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly-and-declarationMap.js
index aa7cc013282d6..321f4fddb998c 100644
--- a/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly-and-declarationMap.js
+++ b/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly-and-declarationMap.js
@@ -118,7 +118,7 @@ export { C } from "./c";
 {"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../src/index.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,CAAC,EAAE,MAAM,KAAK,CAAC;AACxB,OAAO,EAAE,CAAC,EAAE,MAAM,KAAK,CAAC;AACxB,OAAO,EAAE,CAAC,EAAE,MAAM,KAAK,CAAC"}
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"},{"version":"-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n","signature":"-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"},"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n","signature":"-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,39 +150,52 @@ export { C } from "./c";
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n",
-          "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"
+          "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n",
-        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"
+        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -239,7 +252,7 @@ export { C } from "./c";
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1673
+  "size": 1775
 }
 
 
@@ -283,7 +296,7 @@ export interface A {
 //// [/src/lib/c.d.ts.map] file written with same contents
 //// [/src/lib/index.d.ts.map] file written with same contents
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"},{"version":"-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n","signature":"-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"},"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n","signature":"-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -315,39 +328,52 @@ export interface A {
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n",
-          "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+          "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n",
-        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -404,6 +430,6 @@ export interface A {
     "latestChangedDtsFile": "./lib/a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1693
+  "size": 1795
 }
 
diff --git a/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly.js b/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly.js
index f804c8863c301..1e21ec66161af 100644
--- a/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly.js
+++ b/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-circular-import-project-with-emitDeclarationOnly.js
@@ -106,7 +106,7 @@ export { C } from "./c";
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"},{"version":"-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n","signature":"-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"},"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n","signature":"-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -138,39 +138,52 @@ export { C } from "./c";
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n",
-          "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"
+          "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-10415053661-import { B } from \"./b\";\n\nexport interface A {\n    b: B;\n}\n",
-        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"
+        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -226,7 +239,7 @@ export { C } from "./c";
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1651
+  "size": 1753
 }
 
 
@@ -264,7 +277,7 @@ export interface A {
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"},{"version":"-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n","signature":"-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"},"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/c.ts","./src/b.ts","./src/a.ts","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n","signature":"-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5],"latestChangedDtsFile":"./lib/a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -296,39 +309,52 @@ export interface A {
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n",
-          "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+          "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4477156252-import { B } from \"./b\";\n\nexport interface A {\n    b: B; foo: any;\n}\n",
-        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -384,6 +410,6 @@ export interface A {
     "latestChangedDtsFile": "./lib/a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1671
+  "size": 1773
 }
 
diff --git a/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-non-circular-imports-project-with-emitDeclarationOnly.js b/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-non-circular-imports-project-with-emitDeclarationOnly.js
index 2ff6ce1527973..06a05d1645b09 100644
--- a/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-non-circular-imports-project-with-emitDeclarationOnly.js
+++ b/tests/baselines/reference/tsbuild/emitDeclarationOnly/only-dts-output-in-non-circular-imports-project-with-emitDeclarationOnly.js
@@ -105,7 +105,7 @@ export interface C {
 {"version":3,"file":"c.d.ts","sourceRoot":"","sources":["../src/c.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,CAAC,EAAE,MAAM,KAAK,CAAC;AAExB,MAAM,WAAW,CAAC;IACd,CAAC,EAAE,CAAC,CAAC;CACR"}
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/a.ts","./src/c.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"12550013887-export class B { prop = \"hello\"; }\n\nexport interface A {\n    b: B;\n}\n","signature":"-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n"},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"}],"root":[[2,4]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./lib/b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/a.ts","./src/c.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"12550013887-export class B { prop = \"hello\"; }\n\nexport interface A {\n    b: B;\n}\n","signature":"-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n","impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./lib/b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -128,35 +128,43 @@ export interface C {
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "12550013887-export class B { prop = \"hello\"; }\n\nexport interface A {\n    b: B;\n}\n",
-          "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n"
+          "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n",
+          "impliedFormat": 1
         },
         "version": "12550013887-export class B { prop = \"hello\"; }\n\nexport interface A {\n    b: B;\n}\n",
-        "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n"
+        "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -203,7 +211,7 @@ export interface C {
     "latestChangedDtsFile": "./lib/b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1558
+  "size": 1630
 }
 
 
@@ -237,7 +245,7 @@ exitCode:: ExitStatus.Success
 {"version":3,"file":"a.d.ts","sourceRoot":"","sources":["../src/a.ts"],"names":[],"mappings":"AAAA,qBAAa,CAAC;IAAG,IAAI,SAAW;CAAE;AAGlC,MAAM,WAAW,CAAC;IACd,CAAC,EAAE,CAAC,CAAC;CACR"}
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/a.ts","./src/c.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"12921437274-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B;\n}\n","signature":"-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n"},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"}],"root":[[2,4]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./lib/b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/a.ts","./src/c.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"12921437274-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B;\n}\n","signature":"-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n","impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./lib/b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,35 +268,43 @@ exitCode:: ExitStatus.Success
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "12921437274-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B;\n}\n",
-          "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n"
+          "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n",
+          "impliedFormat": 1
         },
         "version": "12921437274-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B;\n}\n",
-        "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n"
+        "signature": "-15427030283-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -335,7 +351,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./lib/b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1571
+  "size": 1643
 }
 
 
@@ -381,7 +397,7 @@ export interface A {
 //// [/src/lib/b.d.ts.map] file written with same contents
 //// [/src/lib/c.d.ts.map] file written with same contents
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/a.ts","./src/c.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"17511804123-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B; foo: any;\n}\n","signature":"-21227085920-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n    foo: any;\n}\n"},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"}],"root":[[2,4]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./lib/a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/a.ts","./src/c.ts","./src/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"17511804123-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B; foo: any;\n}\n","signature":"-21227085920-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n    foo: any;\n}\n","impliedFormat":1},{"version":"3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n","signature":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n","signature":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"alwaysStrict":true,"composite":true,"declaration":true,"declarationMap":true,"emitDeclarationOnly":true,"esModuleInterop":true,"module":1,"outDir":"./lib","rootDir":"./src","sourceMap":true,"strict":true,"target":1},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./lib/a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -404,35 +420,43 @@ export interface A {
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/a.ts": {
         "original": {
           "version": "17511804123-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B; foo: any;\n}\n",
-          "signature": "-21227085920-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+          "signature": "-21227085920-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+          "impliedFormat": 1
         },
         "version": "17511804123-export class B { prop = \"hello\"; }\n\nclass C { }\nexport interface A {\n    b: B; foo: any;\n}\n",
-        "signature": "-21227085920-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+        "signature": "-21227085920-export declare class B {\n    prop: string;\n}\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/c.ts": {
         "original": {
           "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+          "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
         },
         "version": "3086446657-import { A } from \"./a\";\n\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/b.ts": {
         "original": {
           "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+          "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5791025721-import { C } from \"./c\";\n\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -479,6 +503,6 @@ export interface A {
     "latestChangedDtsFile": "./lib/a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1596
+  "size": 1668
 }
 
diff --git a/tests/baselines/reference/tsbuild/emptyFiles/does-not-have-empty-files-diagnostic-when-files-is-empty-and-references-are-provided.js b/tests/baselines/reference/tsbuild/emptyFiles/does-not-have-empty-files-diagnostic-when-files-is-empty-and-references-are-provided.js
index 0c42054b40fb8..a9132ee604bae 100644
--- a/tests/baselines/reference/tsbuild/emptyFiles/does-not-have-empty-files-diagnostic-when-files-is-empty-and-references-are-provided.js
+++ b/tests/baselines/reference/tsbuild/emptyFiles/does-not-have-empty-files-diagnostic-when-files-is-empty-and-references-are-provided.js
@@ -66,7 +66,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/src/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"7987260467-export function multiply(a: number, b: number) { return a * b; }","signature":"-8675294677-export declare function multiply(a: number, b: number): number;\n"}],"root":[2],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"7987260467-export function multiply(a: number, b: number) { return a * b; }","signature":"-8675294677-export declare function multiply(a: number, b: number): number;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -79,19 +79,23 @@ function multiply(a, b) { return a * b; }
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "7987260467-export function multiply(a: number, b: number) { return a * b; }",
-          "signature": "-8675294677-export declare function multiply(a: number, b: number): number;\n"
+          "signature": "-8675294677-export declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "7987260467-export function multiply(a: number, b: number) { return a * b; }",
-        "signature": "-8675294677-export declare function multiply(a: number, b: number): number;\n"
+        "signature": "-8675294677-export declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -114,6 +118,6 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 962
+  "size": 998
 }
 
diff --git a/tests/baselines/reference/tsbuild/extends/resolves-the-symlink-path.js b/tests/baselines/reference/tsbuild/extends/resolves-the-symlink-path.js
index 9ace849f4bd95..95aaf3e0389fa 100644
--- a/tests/baselines/reference/tsbuild/extends/resolves-the-symlink-path.js
+++ b/tests/baselines/reference/tsbuild/extends/resolves-the-symlink-path.js
@@ -56,7 +56,7 @@ export declare const x = 10;
 
 
 //// [/users/user/projects/myproject/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"6873164248-// some comment\nexport const x = 10;\n","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true,"removeComments":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"6873164248-// some comment\nexport const x = 10;\n","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"removeComments":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/users/user/projects/myproject/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -69,19 +69,23 @@ export declare const x = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "6873164248-// some comment\nexport const x = 10;\n",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "6873164248-// some comment\nexport const x = 10;\n",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,7 +106,7 @@ export declare const x = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 787
+  "size": 823
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/fileDelete/deleted-file-with-outFile-without-composite.js b/tests/baselines/reference/tsbuild/fileDelete/deleted-file-with-outFile-without-composite.js
index 0c94d76d37061..5909a10591a5e 100644
--- a/tests/baselines/reference/tsbuild/fileDelete/deleted-file-with-outFile-without-composite.js
+++ b/tests/baselines/reference/tsbuild/fileDelete/deleted-file-with-outFile-without-composite.js
@@ -46,10 +46,18 @@ Output::
 
 [12:00:12 AM] Building project '/src/child/tsconfig.json'...
 
+File '/src/child/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../child/child2' from '/src/child/child.ts'. ========
 Module resolution kind is not specified, using 'Classic'.
 File '/src/child/child2.ts' exists - use it as a name resolution result.
 ======== Module name '../child/child2' was successfully resolved to '/src/child/child2.ts'. ========
+File '/src/child/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/child/child2.ts
diff --git a/tests/baselines/reference/tsbuild/fileDelete/deleted-file-without-composite.js b/tests/baselines/reference/tsbuild/fileDelete/deleted-file-without-composite.js
index 829a1ea0422ad..6ec545528c142 100644
--- a/tests/baselines/reference/tsbuild/fileDelete/deleted-file-without-composite.js
+++ b/tests/baselines/reference/tsbuild/fileDelete/deleted-file-without-composite.js
@@ -43,11 +43,19 @@ Output::
 
 [12:00:12 AM] Building project '/src/child/tsconfig.json'...
 
+File '/src/child/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../child/child2' from '/src/child/child.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/src/child/child2', target file types: TypeScript, Declaration.
 File '/src/child/child2.ts' exists - use it as a name resolution result.
 ======== Module name '../child/child2' was successfully resolved to '/src/child/child2.ts'. ========
+File '/src/child/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/child/child2.ts
diff --git a/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-discrepancies.js b/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-discrepancies.js
index 910a4990c83d4..6c741a3e1f43b 100644
--- a/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-discrepancies.js
+++ b/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-discrepancies.js
@@ -8,10 +8,12 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./child.ts": {
-        "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n"
+        "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -52,10 +54,12 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./child.ts": {
-        "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n"
+        "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-with-outFile.js b/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-with-outFile.js
index 56295d3feb1ae..6e2b870be992f 100644
--- a/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-with-outFile.js
+++ b/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file-with-outFile.js
@@ -69,10 +69,18 @@ Output::
 
 [12:00:15 AM] Building project '/src/child/tsconfig.json'...
 
+File '/src/child/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../child/child2' from '/src/child/child.ts'. ========
 Module resolution kind is not specified, using 'Classic'.
 File '/src/child/child2.ts' exists - use it as a name resolution result.
 ======== Module name '../child/child2' was successfully resolved to '/src/child/child2.ts'. ========
+File '/src/child/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/child/child2.ts
@@ -84,6 +92,11 @@ src/child/child.ts
 
 [12:00:22 AM] Building project '/src/main/tsconfig.json'...
 
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/src/main/package.json' does not exist.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'child' from '/src/main/main.ts'. ========
 Module resolution kind is not specified, using 'Classic'.
 File '/src/main/child.ts' does not exist.
@@ -106,6 +119,8 @@ File '/src/child.jsx' does not exist.
 File '/child.js' does not exist.
 File '/child.jsx' does not exist.
 ======== Module name 'child' was not resolved. ========
+File '/lib/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/childResult.d.ts
@@ -143,7 +158,7 @@ define("child", ["require", "exports", "child2"], function (require, exports, ch
 
 
 //// [/src/childResult.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./child/child2.ts","./child/child.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","6507293504-export function child2() {\n}\n","-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n"],"root":[2,3],"options":{"composite":true,"module":2,"outFile":"./childResult.js"},"outSignature":"2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n","latestChangedDtsFile":"./childResult.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./child/child2.ts","./child/child.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"6507293504-export function child2() {\n}\n","impliedFormat":1},{"version":"-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"module":2,"outFile":"./childResult.js"},"outSignature":"2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n","latestChangedDtsFile":"./childResult.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/childResult.tsbuildinfo.readable.baseline.txt]
 {
@@ -154,9 +169,30 @@ define("child", ["require", "exports", "child2"], function (require, exports, ch
       "./child/child.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./child/child2.ts": "6507293504-export function child2() {\n}\n",
-      "./child/child.ts": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./child/child2.ts": {
+        "original": {
+          "version": "6507293504-export function child2() {\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "6507293504-export function child2() {\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./child/child.ts": {
+        "original": {
+          "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -177,7 +213,7 @@ define("child", ["require", "exports", "child2"], function (require, exports, ch
     "latestChangedDtsFile": "./childResult.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1007
+  "size": 1097
 }
 
 //// [/src/mainResult.d.ts]
@@ -198,7 +234,7 @@ define("main", ["require", "exports", "child"], function (require, exports, chil
 
 
 //// [/src/mainResult.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./childresult.d.ts","./main/main.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n","-8784613407-import { child } from \"child\";\nexport function main() {\n    child();\n}\n"],"root":[3],"options":{"composite":true,"module":2,"outFile":"./mainResult.js"},"outSignature":"7955277823-declare module \"main\" {\n    export function main(): void;\n}\n","latestChangedDtsFile":"./mainResult.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./childresult.d.ts","./main/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n","impliedFormat":1},{"version":"-8784613407-import { child } from \"child\";\nexport function main() {\n    child();\n}\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"module":2,"outFile":"./mainResult.js"},"outSignature":"7955277823-declare module \"main\" {\n    export function main(): void;\n}\n","latestChangedDtsFile":"./mainResult.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/mainResult.tsbuildinfo.readable.baseline.txt]
 {
@@ -209,9 +245,30 @@ define("main", ["require", "exports", "child"], function (require, exports, chil
       "./main/main.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./childresult.d.ts": "2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n",
-      "./main/main.ts": "-8784613407-import { child } from \"child\";\nexport function main() {\n    child();\n}\n"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./childresult.d.ts": {
+        "original": {
+          "version": "2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "2074776633-declare module \"child2\" {\n    export function child2(): void;\n}\ndeclare module \"child\" {\n    export function child(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./main/main.ts": {
+        "original": {
+          "version": "-8784613407-import { child } from \"child\";\nexport function main() {\n    child();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-8784613407-import { child } from \"child\";\nexport function main() {\n    child();\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -228,7 +285,7 @@ define("main", ["require", "exports", "child"], function (require, exports, chil
     "latestChangedDtsFile": "./mainResult.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1112
 }
 
 
@@ -248,6 +305,9 @@ Output::
 
 [12:00:31 AM] Building project '/src/child/tsconfig.json'...
 
+File '/src/child/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../child/child2' from '/src/child/child.ts'. ========
 Module resolution kind is not specified, using 'Classic'.
 File '/src/child/child2.ts' does not exist.
@@ -256,6 +316,8 @@ File '/src/child/child2.d.ts' does not exist.
 File '/src/child/child2.js' does not exist.
 File '/src/child/child2.jsx' does not exist.
 ======== Module name '../child/child2' was not resolved. ========
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 src/child/child.ts:1:24 - error TS2792: Cannot find module '../child/child2'. Did you mean to set the 'moduleResolution' option to 'nodenext', or to add aliases to the 'paths' option?
 
 1 import { child2 } from "../child/child2";
diff --git a/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file.js b/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file.js
index 69439e1df8ad5..040b7ca9fb265 100644
--- a/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file.js
+++ b/tests/baselines/reference/tsbuild/fileDelete/detects-deleted-file.js
@@ -65,11 +65,19 @@ Output::
 
 [12:00:15 AM] Building project '/src/child/tsconfig.json'...
 
+File '/src/child/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../child/child2' from '/src/child/child.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/src/child/child2', target file types: TypeScript, Declaration.
 File '/src/child/child2.ts' exists - use it as a name resolution result.
 ======== Module name '../child/child2' was successfully resolved to '/src/child/child2.ts'. ========
+File '/src/child/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/child/child2.ts
@@ -81,11 +89,19 @@ src/child/child.ts
 
 [12:00:24 AM] Building project '/src/main/tsconfig.json'...
 
+File '/src/main/package.json' does not exist.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../child/child' from '/src/main/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/src/child/child', target file types: TypeScript, Declaration.
 File '/src/child/child.ts' exists - use it as a name resolution result.
 ======== Module name '../child/child' was successfully resolved to '/src/child/child.ts'. ========
+File '/src/child/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/child/child.d.ts
@@ -123,7 +139,7 @@ function child2() {
 
 
 //// [/src/child/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./child2.ts","./child.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"6507293504-export function child2() {\n}\n","signature":"-5501507595-export declare function child2(): void;\n"},{"version":"-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n","signature":"-1814288093-export declare function child(): void;\n"}],"root":[2,3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./child.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./child2.ts","./child.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"6507293504-export function child2() {\n}\n","signature":"-5501507595-export declare function child2(): void;\n","impliedFormat":1},{"version":"-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n","signature":"-1814288093-export declare function child(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./child.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/child/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -142,27 +158,33 @@ function child2() {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./child2.ts": {
         "original": {
           "version": "6507293504-export function child2() {\n}\n",
-          "signature": "-5501507595-export declare function child2(): void;\n"
+          "signature": "-5501507595-export declare function child2(): void;\n",
+          "impliedFormat": 1
         },
         "version": "6507293504-export function child2() {\n}\n",
-        "signature": "-5501507595-export declare function child2(): void;\n"
+        "signature": "-5501507595-export declare function child2(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./child.ts": {
         "original": {
           "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
-          "signature": "-1814288093-export declare function child(): void;\n"
+          "signature": "-1814288093-export declare function child(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
-        "signature": "-1814288093-export declare function child(): void;\n"
+        "signature": "-1814288093-export declare function child(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -191,7 +213,7 @@ function child2() {
     "latestChangedDtsFile": "./child.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1065
+  "size": 1119
 }
 
 //// [/src/main/main.d.ts]
@@ -209,7 +231,7 @@ function main() {
 
 
 //// [/src/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../child/child.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-1814288093-export declare function child(): void;\n",{"version":"-8540107489-import { child } from \"../child/child\";\nexport function main() {\n    child();\n}\n","signature":"-2471343004-export declare function main(): void;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../child/child.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1814288093-export declare function child(): void;\n","impliedFormat":1},{"version":"-8540107489-import { child } from \"../child/child\";\nexport function main() {\n    child();\n}\n","signature":"-2471343004-export declare function main(): void;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -228,23 +250,32 @@ function main() {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../child/child.d.ts": {
+        "original": {
+          "version": "-1814288093-export declare function child(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-1814288093-export declare function child(): void;\n",
-        "signature": "-1814288093-export declare function child(): void;\n"
+        "signature": "-1814288093-export declare function child(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-8540107489-import { child } from \"../child/child\";\nexport function main() {\n    child();\n}\n",
-          "signature": "-2471343004-export declare function main(): void;\n"
+          "signature": "-2471343004-export declare function main(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-8540107489-import { child } from \"../child/child\";\nexport function main() {\n    child();\n}\n",
-        "signature": "-2471343004-export declare function main(): void;\n"
+        "signature": "-2471343004-export declare function main(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -269,7 +300,7 @@ function main() {
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 993
+  "size": 1059
 }
 
 
@@ -291,6 +322,9 @@ Output::
 
 [12:00:35 AM] Building project '/src/child/tsconfig.json'...
 
+File '/src/child/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../child/child2' from '/src/child/child.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/src/child/child2', target file types: TypeScript, Declaration.
@@ -303,6 +337,8 @@ File '/src/child/child2.js' does not exist.
 File '/src/child/child2.jsx' does not exist.
 Directory '/src/child/child2' does not exist, skipping all lookups in it.
 ======== Module name '../child/child2' was not resolved. ========
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 src/child/child.ts:1:24 - error TS2307: Cannot find module '../child/child2' or its corresponding type declarations.
 
 1 import { child2 } from "../child/child2";
@@ -323,7 +359,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/child/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./child.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n","signature":"-1814288093-export declare function child(): void;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./child.ts","start":23,"length":17,"messageText":"Cannot find module '../child/child2' or its corresponding type declarations.","category":1,"code":2307}]]],"affectedFilesPendingEmit":[2],"latestChangedDtsFile":"./child.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./child.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n","signature":"-1814288093-export declare function child(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./child.ts","start":23,"length":17,"messageText":"Cannot find module '../child/child2' or its corresponding type declarations.","category":1,"code":2307}]]],"affectedFilesPendingEmit":[2],"latestChangedDtsFile":"./child.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/child/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -336,19 +372,23 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./child.ts": {
         "original": {
           "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
-          "signature": "-1814288093-export declare function child(): void;\n"
+          "signature": "-1814288093-export declare function child(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-11458139532-import { child2 } from \"../child/child2\";\nexport function child() {\n    child2();\n}\n",
-        "signature": "-1814288093-export declare function child(): void;\n"
+        "signature": "-1814288093-export declare function child(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -386,6 +426,6 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     "latestChangedDtsFile": "./child.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1095
+  "size": 1131
 }
 
diff --git a/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module-with-isolatedModules.js b/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module-with-isolatedModules.js
index 21895d2188838..1fe011eaa836a 100644
--- a/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module-with-isolatedModules.js
+++ b/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module-with-isolatedModules.js
@@ -156,7 +156,7 @@ Object.defineProperty(exports, "bar", { enumerable: true, get: function () { ret
 
 
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"-6956449754-export { default as bar } from './bar';\n",{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,48 +182,63 @@ Object.defineProperty(exports, "bar", { enumerable: true, get: function () { ret
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
+        },
         "version": "-6956449754-export { default as bar } from './bar';\n",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -265,7 +280,7 @@ Object.defineProperty(exports, "bar", { enumerable: true, get: function () { ret
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2514
+  "size": 2634
 }
 
 
@@ -317,7 +332,7 @@ export declare const lazyBar: LazyAction<() => void, typeof import("./lazyIndex"
 
 //// [/src/obj/lazyIndex.d.ts] file written with same contents
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"-6956449754-export { default as bar } from './bar';\n",{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -343,48 +358,63 @@ export declare const lazyBar: LazyAction<() => void, typeof import("./lazyIndex"
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
+        },
         "version": "-6956449754-export { default as bar } from './bar';\n",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -426,7 +456,7 @@ export declare const lazyBar: LazyAction<() => void, typeof import("./lazyIndex"
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2476
+  "size": 2596
 }
 
 
@@ -478,7 +508,7 @@ export declare const lazyBar: LazyAction<(param: string) => void, typeof import(
 
 //// [/src/obj/lazyIndex.d.ts] file written with same contents
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"-6956449754-export { default as bar } from './bar';\n",{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -504,48 +534,63 @@ export declare const lazyBar: LazyAction<(param: string) => void, typeof import(
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
+        },
         "version": "-6956449754-export { default as bar } from './bar';\n",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -587,6 +632,6 @@ export declare const lazyBar: LazyAction<(param: string) => void, typeof import(
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2514
+  "size": 2634
 }
 
diff --git a/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module.js b/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module.js
index 0034b5fe7a36d..b9faed3b53f04 100644
--- a/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module.js
+++ b/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/inferred-type-from-transitive-module.js
@@ -156,7 +156,7 @@ Object.defineProperty(exports, "bar", { enumerable: true, get: function () { ret
 
 
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"-6956449754-export { default as bar } from './bar';\n",{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,48 +182,63 @@ Object.defineProperty(exports, "bar", { enumerable: true, get: function () { ret
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
+        },
         "version": "-6956449754-export { default as bar } from './bar';\n",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -265,7 +280,7 @@ Object.defineProperty(exports, "bar", { enumerable: true, get: function () { ret
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2514
+  "size": 2634
 }
 
 
@@ -318,7 +333,7 @@ export declare const lazyBar: LazyAction<() => void, typeof import("./lazyIndex"
 //// [/src/obj/lazyIndex.d.ts] file written with same contents
 //// [/src/obj/lazyIndex.js] file written with same contents
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"-6956449754-export { default as bar } from './bar';\n",{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -344,48 +359,63 @@ export declare const lazyBar: LazyAction<() => void, typeof import("./lazyIndex"
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
+        },
         "version": "-6956449754-export { default as bar } from './bar';\n",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -427,7 +457,7 @@ export declare const lazyBar: LazyAction<() => void, typeof import("./lazyIndex"
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2476
+  "size": 2596
 }
 
 
@@ -480,7 +510,7 @@ export declare const lazyBar: LazyAction<(param: string) => void, typeof import(
 //// [/src/obj/lazyIndex.d.ts] file written with same contents
 //// [/src/obj/lazyIndex.js] file written with same contents
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"-6956449754-export { default as bar } from './bar';\n",{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -506,48 +536,63 @@ export declare const lazyBar: LazyAction<(param: string) => void, typeof import(
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
+        },
         "version": "-6956449754-export { default as bar } from './bar';\n",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -589,6 +634,6 @@ export declare const lazyBar: LazyAction<(param: string) => void, typeof import(
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2514
+  "size": 2634
 }
 
diff --git a/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/reports-errors-in-files-affected-by-change-in-signature-with-isolatedModules.js b/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/reports-errors-in-files-affected-by-change-in-signature-with-isolatedModules.js
index f8dc27f137af1..1cae761bec806 100644
--- a/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/reports-errors-in-files-affected-by-change-in-signature-with-isolatedModules.js
+++ b/tests/baselines/reference/tsbuild/inferredTypeFromTransitiveModule/reports-errors-in-files-affected-by-change-in-signature-with-isolatedModules.js
@@ -160,7 +160,7 @@ var bar_2 = require("./bar");
 
 
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},{"version":"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","signature":"-6956449754-export { default as bar } from './bar';\n"},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","signature":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -186,52 +186,64 @@ var bar_2 = require("./bar");
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
         "original": {
           "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
-          "signature": "-6956449754-export { default as bar } from './bar';\n"
+          "signature": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
         },
         "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -273,7 +285,7 @@ var bar_2 = require("./bar");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2651
+  "size": 2759
 }
 
 
@@ -315,7 +327,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n"],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,[5,[{"file":"../lazyindex.ts","start":85,"length":7,"messageText":"Expected 0 arguments, but got 1.","category":1,"code":2554}]]],"affectedFilesPendingEmit":[2,[6],[5]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,[5,[{"file":"../lazyindex.ts","start":85,"length":7,"messageText":"Expected 0 arguments, but got 1.","category":1,"code":2554}]]],"affectedFilesPendingEmit":[2,[6],[5]]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -341,44 +353,62 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
+          "impliedFormat": 1
+        },
         "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
-        "signature": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");"
+        "signature": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
+        "original": {
+          "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
+          "impliedFormat": 1
+        },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n"
+        "signature": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -450,7 +480,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2531
+  "size": 2663
 }
 
 
@@ -488,7 +518,7 @@ exitCode:: ExitStatus.Success
 //// [/src/obj/index.d.ts] file written with same contents
 //// [/src/obj/lazyIndex.d.ts] file written with same contents
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},{"version":"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","signature":"-6956449754-export { default as bar } from './bar';\n"},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n","signature":"1630430607-declare const _default: (param: string) => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","signature":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -514,52 +544,64 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+          "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "9420269200-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(param: string): void {\n});\n",
-        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n"
+        "signature": "1630430607-declare const _default: (param: string) => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
         "original": {
           "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
-          "signature": "-6956449754-export { default as bar } from './bar';\n"
+          "signature": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
         },
         "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-13696684486-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<(param: string) => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -601,7 +643,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2651
+  "size": 2759
 }
 
 
@@ -643,7 +685,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n"],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,[5,[{"file":"../lazyindex.ts","start":85,"length":7,"messageText":"Expected 0 arguments, but got 1.","category":1,"code":2554}]]],"affectedFilesPendingEmit":[2,[6],[5]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,[5,[{"file":"../lazyindex.ts","start":85,"length":7,"messageText":"Expected 0 arguments, but got 1.","category":1,"code":2554}]]],"affectedFilesPendingEmit":[2,[6],[5]]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -669,44 +711,62 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
+        "original": {
+          "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
+          "impliedFormat": 1
+        },
         "version": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
-        "signature": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");"
+        "signature": "3017320451-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar(\"hello\");",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
+        "original": {
+          "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
+          "impliedFormat": 1
+        },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n"
+        "signature": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -778,7 +838,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2531
+  "size": 2663
 }
 
 
@@ -834,7 +894,7 @@ var bar_2 = require("./bar");
 
 
 //// [/src/obj/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n"},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true},{"version":"-3721262293-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar();","signature":"-6956449754-export { default as bar } from './bar';\n"},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../bar.ts","../bundling.ts","../global.d.ts","../lazyindex.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n","signature":"-1866892563-declare const _default: () => void;\nexport default _default;\n","impliedFormat":1},{"version":"-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n","signature":"-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n","impliedFormat":1},{"version":"-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3721262293-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar();","signature":"-6956449754-export { default as bar } from './bar';\n","impliedFormat":1},{"version":"6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n","signature":"-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true,"outDir":"./","target":1},"fileIdsList":[[3,5],[2]],"referencedMap":[[6,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,6,5]},"version":"FakeTSVersion"}
 
 //// [/src/obj/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -860,52 +920,64 @@ var bar_2 = require("./bar");
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../bar.ts": {
         "original": {
           "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+          "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "10075719182-interface RawAction {\n    (...args: any[]): Promise<any> | void;\n}\ninterface ActionFactory {\n    <T extends RawAction>(target: T): T;\n}\ndeclare function foo<U extends any[] = any[]>(): ActionFactory;\nexport default foo()(function foobar(): void {\n});\n",
-        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n"
+        "signature": "-1866892563-declare const _default: () => void;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "../bundling.ts": {
         "original": {
           "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+          "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5105594088-export class LazyModule<TModule> {\n    constructor(private importCallback: () => Promise<TModule>) {}\n}\n\nexport class LazyAction<\n    TAction extends (...args: any[]) => any,\n    TModule\n>  {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction) {\n    }\n}\n",
-        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n"
+        "signature": "-23343356903-export declare class LazyModule<TModule> {\n    private importCallback;\n    constructor(importCallback: () => Promise<TModule>);\n}\nexport declare class LazyAction<TAction extends (...args: any[]) => any, TModule> {\n    constructor(_lazyModule: LazyModule<TModule>, _getter: (module: TModule) => TAction);\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../global.d.ts": {
         "original": {
           "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
         "signature": "-20910599262-interface PromiseConstructor {\n    new <T>(): Promise<T>;\n}\ndeclare var Promise: PromiseConstructor;\ninterface Promise<T> {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../lazyindex.ts": {
         "original": {
           "version": "-3721262293-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar();",
-          "signature": "-6956449754-export { default as bar } from './bar';\n"
+          "signature": "-6956449754-export { default as bar } from './bar';\n",
+          "impliedFormat": 1
         },
         "version": "-3721262293-export { default as bar } from './bar';\n\nimport { default as bar } from './bar';\nbar();",
-        "signature": "-6956449754-export { default as bar } from './bar';\n"
+        "signature": "-6956449754-export { default as bar } from './bar';\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-          "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"
+          "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n",
+          "impliedFormat": 1
         },
         "version": "6186344161-import { LazyAction, LazyModule } from './bundling';\nconst lazyModule = new LazyModule(() =>\n    import('./lazyIndex')\n);\nexport const lazyBar = new LazyAction(lazyModule, m => m.bar);\n",
-        "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n"
+        "signature": "-4053129224-import { LazyAction } from './bundling';\nexport declare const lazyBar: LazyAction<() => void, typeof import(\"./lazyIndex\")>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -947,6 +1019,6 @@ var bar_2 = require("./bar");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2605
+  "size": 2713
 }
 
diff --git a/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-and-emits-them-correctly.js b/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-and-emits-them-correctly.js
index 4cc5206de6752..7e6c616f2679f 100644
--- a/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-and-emits-them-correctly.js
+++ b/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-and-emits-them-correctly.js
@@ -142,7 +142,7 @@ module.exports = {};
 
 
 //// [/lib/common/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib.d.ts","../../src/common/nominal.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},{"version":"-9003723607-/**\n * @template T, Name\n * @typedef {T & {[Symbol.species]: Name}} Nominal\n */\nmodule.exports = {};\n","signature":"-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n"}],"root":[2],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./nominal.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib.d.ts","../../src/common/nominal.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9003723607-/**\n * @template T, Name\n * @typedef {T & {[Symbol.species]: Name}} Nominal\n */\nmodule.exports = {};\n","signature":"-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n","impliedFormat":1}],"root":[2],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./nominal.d.ts"},"version":"FakeTSVersion"}
 
 //// [/lib/common/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -155,19 +155,23 @@ module.exports = {};
       "../lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/common/nominal.js": {
         "original": {
           "version": "-9003723607-/**\n * @template T, Name\n * @typedef {T & {[Symbol.species]: Name}} Nominal\n */\nmodule.exports = {};\n",
-          "signature": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n"
+          "signature": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n",
+          "impliedFormat": 1
         },
         "version": "-9003723607-/**\n * @template T, Name\n * @typedef {T & {[Symbol.species]: Name}} Nominal\n */\nmodule.exports = {};\n",
-        "signature": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n"
+        "signature": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -193,11 +197,11 @@ module.exports = {};
     "latestChangedDtsFile": "./nominal.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1308
 }
 
 //// [/lib/sub-project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib.d.ts","../common/nominal.d.ts","../../src/sub-project/index.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n","-23375763082-import { Nominal } from '../common/nominal';\n\n/**\n * @typedef {Nominal<string, 'MyNominal'>} MyNominal\n */\n"],"root":[3],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[2,1,[3,[{"file":"../../src/sub-project/index.js","start":9,"length":7,"messageText":"'Nominal' is a type and cannot be imported in JavaScript files. Use 'import(\"../common/nominal\").Nominal' in a JSDoc type annotation.","category":1,"code":18042}]]],"affectedFilesPendingEmit":[3],"emitSignatures":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib.d.ts","../common/nominal.d.ts","../../src/sub-project/index.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n","impliedFormat":1},{"version":"-23375763082-import { Nominal } from '../common/nominal';\n\n/**\n * @typedef {Nominal<string, 'MyNominal'>} MyNominal\n */\n","impliedFormat":1}],"root":[3],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[2,1,[3,[{"file":"../../src/sub-project/index.js","start":9,"length":7,"messageText":"'Nominal' is a type and cannot be imported in JavaScript files. Use 'import(\"../common/nominal\").Nominal' in a JSDoc type annotation.","category":1,"code":18042}]]],"affectedFilesPendingEmit":[3],"emitSignatures":[3]},"version":"FakeTSVersion"}
 
 //// [/lib/sub-project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -216,19 +220,31 @@ module.exports = {};
       "../lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../common/nominal.d.ts": {
+        "original": {
+          "version": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n",
+          "impliedFormat": 1
+        },
         "version": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n",
-        "signature": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n"
+        "signature": "-13020584488-export type Nominal<T, Name> = T & {\n    [Symbol.species]: Name;\n};\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/sub-project/index.js": {
+        "original": {
+          "version": "-23375763082-import { Nominal } from '../common/nominal';\n\n/**\n * @typedef {Nominal<string, 'MyNominal'>} MyNominal\n */\n",
+          "impliedFormat": 1
+        },
         "version": "-23375763082-import { Nominal } from '../common/nominal';\n\n/**\n * @typedef {Nominal<string, 'MyNominal'>} MyNominal\n */\n",
-        "signature": "-23375763082-import { Nominal } from '../common/nominal';\n\n/**\n * @typedef {Nominal<string, 'MyNominal'>} MyNominal\n */\n"
+        "signature": "-23375763082-import { Nominal } from '../common/nominal';\n\n/**\n * @typedef {Nominal<string, 'MyNominal'>} MyNominal\n */\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -279,6 +295,6 @@ module.exports = {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1567
+  "size": 1645
 }
 
diff --git a/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-with-non-moved-json-files-and-emits-them-correctly.js b/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-with-non-moved-json-files-and-emits-them-correctly.js
index cc685f6d8da58..77f5e8caadec0 100644
--- a/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-with-non-moved-json-files-and-emits-them-correctly.js
+++ b/tests/baselines/reference/tsbuild/javascriptProjectEmit/loads-js-based-projects-with-non-moved-json-files-and-emits-them-correctly.js
@@ -137,7 +137,7 @@ exports.m = common_1.default;
 
 
 //// [/out/sub-project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../../src/common/obj.json","../../src/common/index.d.ts","../../src/sub-project/index.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"2151907832-{\n    \"val\": 42\n}","-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",{"version":"-14684157955-import mod from '../common';\n\nexport const m = mod;\n","signature":"-12566182521-export const m: {\n    val: number;\n};\n"}],"root":[4],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"esModuleInterop":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../../src/common/obj.json","../../src/common/index.d.ts","../../src/sub-project/index.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},"2151907832-{\n    \"val\": 42\n}",{"version":"-5032674136-import x = require(\"./obj.json\");\nexport = x;\n","impliedFormat":1},{"version":"-14684157955-import mod from '../common';\n\nexport const m = mod;\n","signature":"-12566182521-export const m: {\n    val: number;\n};\n","impliedFormat":1}],"root":[4],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"esModuleInterop":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/out/sub-project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -160,27 +160,36 @@ exports.m = common_1.default;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/common/obj.json": {
         "version": "2151907832-{\n    \"val\": 42\n}",
         "signature": "2151907832-{\n    \"val\": 42\n}"
       },
       "../../src/common/index.d.ts": {
+        "original": {
+          "version": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",
+          "impliedFormat": 1
+        },
         "version": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",
-        "signature": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n"
+        "signature": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/sub-project/index.js": {
         "original": {
           "version": "-14684157955-import mod from '../common';\n\nexport const m = mod;\n",
-          "signature": "-12566182521-export const m: {\n    val: number;\n};\n"
+          "signature": "-12566182521-export const m: {\n    val: number;\n};\n",
+          "impliedFormat": 1
         },
         "version": "-14684157955-import mod from '../common';\n\nexport const m = mod;\n",
-        "signature": "-12566182521-export const m: {\n    val: number;\n};\n"
+        "signature": "-12566182521-export const m: {\n    val: number;\n};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +225,7 @@ exports.m = common_1.default;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1420
+  "size": 1486
 }
 
 //// [/out/sub-project-2/index.d.ts]
@@ -241,7 +250,7 @@ function getVar() {
 
 
 //// [/out/sub-project-2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../sub-project/index.d.ts","../../src/sub-project-2/index.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"-12566182521-export const m: {\n    val: number;\n};\n",{"version":"13545386800-import { m } from '../sub-project/index';\n\nconst variable = {\n    key: m,\n};\n\nexport function getVar() {\n    return variable;\n}\n","signature":"2403991005-export function getVar(): {\n    key: {\n        val: number;\n    };\n};\n"}],"root":[3],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"esModuleInterop":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../sub-project/index.d.ts","../../src/sub-project-2/index.js"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12566182521-export const m: {\n    val: number;\n};\n","impliedFormat":1},{"version":"13545386800-import { m } from '../sub-project/index';\n\nconst variable = {\n    key: m,\n};\n\nexport function getVar() {\n    return variable;\n}\n","signature":"2403991005-export function getVar(): {\n    key: {\n        val: number;\n    };\n};\n","impliedFormat":1}],"root":[3],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"esModuleInterop":true,"outDir":"..","rootDir":"../../src","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/out/sub-project-2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,23 +269,32 @@ function getVar() {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../sub-project/index.d.ts": {
+        "original": {
+          "version": "-12566182521-export const m: {\n    val: number;\n};\n",
+          "impliedFormat": 1
+        },
         "version": "-12566182521-export const m: {\n    val: number;\n};\n",
-        "signature": "-12566182521-export const m: {\n    val: number;\n};\n"
+        "signature": "-12566182521-export const m: {\n    val: number;\n};\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/sub-project-2/index.js": {
         "original": {
           "version": "13545386800-import { m } from '../sub-project/index';\n\nconst variable = {\n    key: m,\n};\n\nexport function getVar() {\n    return variable;\n}\n",
-          "signature": "2403991005-export function getVar(): {\n    key: {\n        val: number;\n    };\n};\n"
+          "signature": "2403991005-export function getVar(): {\n    key: {\n        val: number;\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "13545386800-import { m } from '../sub-project/index';\n\nconst variable = {\n    key: m,\n};\n\nexport function getVar() {\n    return variable;\n}\n",
-        "signature": "2403991005-export function getVar(): {\n    key: {\n        val: number;\n    };\n};\n"
+        "signature": "2403991005-export function getVar(): {\n    key: {\n        val: number;\n    };\n};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -308,7 +326,7 @@ function getVar() {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1516
 }
 
 //// [/src/common/index.d.ts]
@@ -323,7 +341,7 @@ module.exports = x;
 
 
 //// [/src/common/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./obj.json","./index.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"2151907832-{\n    \"val\": 42\n}","-5032674136-import x = require(\"./obj.json\");\nexport = x;\n"],"root":[2,3],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"esModuleInterop":true,"outDir":"../..","rootDir":"..","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./obj.json","./index.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},"2151907832-{\n    \"val\": 42\n}",{"version":"-5032674136-import x = require(\"./obj.json\");\nexport = x;\n","impliedFormat":1}],"root":[2,3],"options":{"allowJs":true,"checkJs":true,"composite":true,"declaration":true,"esModuleInterop":true,"outDir":"../..","rootDir":"..","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/common/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -342,19 +360,26 @@ module.exports = x;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./obj.json": {
         "version": "2151907832-{\n    \"val\": 42\n}",
         "signature": "2151907832-{\n    \"val\": 42\n}"
       },
       "./index.ts": {
+        "original": {
+          "version": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",
+          "impliedFormat": 1
+        },
         "version": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",
-        "signature": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n"
+        "signature": "-5032674136-import x = require(\"./obj.json\");\nexport = x;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -390,6 +415,6 @@ module.exports = x;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1189
+  "size": 1237
 }
 
diff --git a/tests/baselines/reference/tsbuild/lateBoundSymbol/interface-is-merged-and-contains-late-bound-member.js b/tests/baselines/reference/tsbuild/lateBoundSymbol/interface-is-merged-and-contains-late-bound-member.js
index 29328022ff2dc..187315d13c078 100644
--- a/tests/baselines/reference/tsbuild/lateBoundSymbol/interface-is-merged-and-contains-late-bound-member.js
+++ b/tests/baselines/reference/tsbuild/lateBoundSymbol/interface-is-merged-and-contains-late-bound-member.js
@@ -74,7 +74,7 @@ var x = 10;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/globals.d.ts","./src/hkt.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n","affectsGlobalScope":true},"675797797-export interface HKT<T> { }","-28636726258-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\nconst x = 10;\ntype A = HKT<number>[typeof sym];\n"],"root":[[2,4]],"options":{"rootDir":"./src"},"fileIdsList":[[3,4]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/globals.d.ts","./src/hkt.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"675797797-export interface HKT<T> { }","impliedFormat":1},{"version":"-28636726258-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\nconst x = 10;\ntype A = HKT<number>[typeof sym];\n","impliedFormat":1}],"root":[[2,4]],"options":{"rootDir":"./src"},"fileIdsList":[[3,4]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -95,28 +95,42 @@ var x = 10;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/globals.d.ts": {
         "original": {
           "version": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
         "signature": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/hkt.ts": {
+        "original": {
+          "version": "675797797-export interface HKT<T> { }",
+          "impliedFormat": 1
+        },
         "version": "675797797-export interface HKT<T> { }",
-        "signature": "675797797-export interface HKT<T> { }"
+        "signature": "675797797-export interface HKT<T> { }",
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
+        "original": {
+          "version": "-28636726258-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\nconst x = 10;\ntype A = HKT<number>[typeof sym];\n",
+          "impliedFormat": 1
+        },
         "version": "-28636726258-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\nconst x = 10;\ntype A = HKT<number>[typeof sym];\n",
-        "signature": "-28636726258-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\nconst x = 10;\ntype A = HKT<number>[typeof sym];\n"
+        "signature": "-28636726258-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\nconst x = 10;\ntype A = HKT<number>[typeof sym];\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -149,7 +163,7 @@ var x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1171
+  "size": 1267
 }
 
 
@@ -191,7 +205,7 @@ var sym = Symbol();
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/globals.d.ts","./src/hkt.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n","affectsGlobalScope":true},"675797797-export interface HKT<T> { }",{"version":"-13476768170-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\n","signature":"-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n"}],"root":[[2,4]],"options":{"rootDir":"./src"},"fileIdsList":[[3,4]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/globals.d.ts","./src/hkt.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"675797797-export interface HKT<T> { }","impliedFormat":1},{"version":"-13476768170-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\n","signature":"-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"rootDir":"./src"},"fileIdsList":[[3,4]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -212,32 +226,43 @@ var sym = Symbol();
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/globals.d.ts": {
         "original": {
           "version": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
         "signature": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/hkt.ts": {
+        "original": {
+          "version": "675797797-export interface HKT<T> { }",
+          "impliedFormat": 1
+        },
         "version": "675797797-export interface HKT<T> { }",
-        "signature": "675797797-export interface HKT<T> { }"
+        "signature": "675797797-export interface HKT<T> { }",
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-13476768170-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\n",
-          "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n"
+          "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "-13476768170-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\n",
-        "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n"
+        "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -270,7 +295,7 @@ var sym = Symbol();
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1356
+  "size": 1440
 }
 
 
@@ -313,7 +338,7 @@ var x = 10;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/globals.d.ts","./src/hkt.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n","affectsGlobalScope":true},"675797797-export interface HKT<T> { }",{"version":"-8082110290-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\nconst x = 10;","signature":"-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n"}],"root":[[2,4]],"options":{"rootDir":"./src"},"fileIdsList":[[3,4]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/globals.d.ts","./src/hkt.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"675797797-export interface HKT<T> { }","impliedFormat":1},{"version":"-8082110290-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\nconst x = 10;","signature":"-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"rootDir":"./src"},"fileIdsList":[[3,4]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -334,32 +359,43 @@ var x = 10;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/globals.d.ts": {
         "original": {
           "version": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
         "signature": "-1383980825-interface SymbolConstructor {\n    (description?: string | number): symbol;\n}\ndeclare var Symbol: SymbolConstructor;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/hkt.ts": {
+        "original": {
+          "version": "675797797-export interface HKT<T> { }",
+          "impliedFormat": 1
+        },
         "version": "675797797-export interface HKT<T> { }",
-        "signature": "675797797-export interface HKT<T> { }"
+        "signature": "675797797-export interface HKT<T> { }",
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-8082110290-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\nconst x = 10;",
-          "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n"
+          "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "-8082110290-import { HKT } from \"./hkt\";\n\nconst sym = Symbol();\n\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: { a: T }\n    }\n}\n\ntype A = HKT<number>[typeof sym];\nconst x = 10;",
-        "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n"
+        "signature": "-13155653598-declare const sym: unique symbol;\ndeclare module \"./hkt\" {\n    interface HKT<T> {\n        [sym]: {\n            a: T;\n        };\n    }\n}\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -392,6 +428,6 @@ var x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1368
+  "size": 1452
 }
 
diff --git a/tests/baselines/reference/tsbuild/libraryResolution/with-config-with-redirection.js b/tests/baselines/reference/tsbuild/libraryResolution/with-config-with-redirection.js
index a4f050dad3044..a44b584429cd6 100644
--- a/tests/baselines/reference/tsbuild/libraryResolution/with-config-with-redirection.js
+++ b/tests/baselines/reference/tsbuild/libraryResolution/with-config-with-redirection.js
@@ -201,6 +201,21 @@ Output::
 
 [12:00:51 AM] Building project '/home/src/projects/project1/tsconfig.json'...
 
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -216,6 +231,13 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -231,6 +253,13 @@ File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -246,10 +275,34 @@ File '/home/src/projects/node_modules/@typescript/lib-es5/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -268,6 +321,13 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-webworker/index.d.ts
   Library referenced via 'webworker' from file 'project1/file2.ts'
 node_modules/@typescript/lib-scripthost/index.d.ts
@@ -294,6 +354,16 @@ project1/typeroot1/sometype/index.d.ts
 
 [12:01:02 AM] Building project '/home/src/projects/project2/tsconfig.json'...
 
+File '/home/src/projects/project2/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project2/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -302,6 +372,13 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -310,6 +387,13 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-es5/index.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 node_modules/@typescript/lib-dom/index.d.ts
@@ -322,6 +406,16 @@ project2/utils.d.ts
 
 [12:01:09 AM] Building project '/home/src/projects/project3/tsconfig.json'...
 
+File '/home/src/projects/project3/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project3/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -330,6 +424,13 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -338,6 +439,13 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-es5/index.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 node_modules/@typescript/lib-dom/index.d.ts
@@ -350,6 +458,16 @@ project3/utils.d.ts
 
 [12:01:16 AM] Building project '/home/src/projects/project4/tsconfig.json'...
 
+File '/home/src/projects/project4/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project4/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-esnext' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -365,6 +483,13 @@ File '/home/src/projects/node_modules/@typescript/lib-esnext/index.tsx' does not
 File '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts'.
 ======== Module name '@typescript/lib-esnext' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-esnext/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -373,6 +498,13 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -381,6 +513,13 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-webworker'
 Resolution for module '@typescript/lib-webworker' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-esnext/index.d.ts
   Library 'lib.esnext.d.ts' specified in compilerOptions
 node_modules/@typescript/lib-dom/index.d.ts
@@ -586,7 +725,7 @@ exports.x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -607,74 +746,103 @@ exports.x = "type1";
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -712,7 +880,7 @@ exports.x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1763
+  "size": 1979
 }
 
 //// [/home/src/projects/project2/index.d.ts]
@@ -727,7 +895,7 @@ exports.y = 10;
 
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -742,32 +910,43 @@ exports.y = 10;
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11999455899-export const y = 10",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11999455899-export const y = 10",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -793,7 +972,7 @@ exports.y = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1029
+  "size": 1113
 }
 
 //// [/home/src/projects/project3/index.d.ts]
@@ -808,7 +987,7 @@ exports.z = 10;
 
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -823,32 +1002,43 @@ exports.z = 10;
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -874,7 +1064,7 @@ exports.z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1029
+  "size": 1113
 }
 
 //// [/home/src/projects/project4/index.d.ts]
@@ -889,7 +1079,7 @@ exports.z = 10;
 
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-esnext/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-esnext/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -905,41 +1095,54 @@ exports.z = 10;
       "../node_modules/@typescript/lib-esnext/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -966,6 +1169,6 @@ exports.z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1174
+  "size": 1276
 }
 
diff --git a/tests/baselines/reference/tsbuild/libraryResolution/with-config.js b/tests/baselines/reference/tsbuild/libraryResolution/with-config.js
index 58345d4fb37bd..37f19ea03002b 100644
--- a/tests/baselines/reference/tsbuild/libraryResolution/with-config.js
+++ b/tests/baselines/reference/tsbuild/libraryResolution/with-config.js
@@ -162,6 +162,21 @@ Output::
 
 [12:00:41 AM] Building project '/home/src/projects/project1/tsconfig.json'...
 
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -188,6 +203,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -214,6 +233,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -240,10 +263,31 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -273,6 +317,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
   Library 'lib.es5.d.ts' specified in compilerOptions
@@ -299,6 +347,16 @@ project1/typeroot1/sometype/index.d.ts
 
 [12:00:52 AM] Building project '/home/src/projects/project2/tsconfig.json'...
 
+File '/home/src/projects/project2/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project2/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -307,6 +365,10 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -315,6 +377,10 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 ../lib/lib.dom.d.ts
@@ -327,6 +393,16 @@ project2/utils.d.ts
 
 [12:00:59 AM] Building project '/home/src/projects/project3/tsconfig.json'...
 
+File '/home/src/projects/project3/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project3/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -335,6 +411,10 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -343,6 +423,10 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 ../lib/lib.dom.d.ts
@@ -355,6 +439,16 @@ project3/utils.d.ts
 
 [12:01:06 AM] Building project '/home/src/projects/project4/tsconfig.json'...
 
+File '/home/src/projects/project4/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project4/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-esnext' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -381,6 +475,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-esnext' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -389,6 +487,10 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -397,6 +499,10 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-webworker'
 Resolution for module '@typescript/lib-webworker' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.esnext.d.ts
   Library 'lib.esnext.d.ts' specified in compilerOptions
 ../lib/lib.dom.d.ts
@@ -602,7 +708,7 @@ exports.x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -623,74 +729,103 @@ exports.x = "type1";
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -728,7 +863,7 @@ exports.x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1667
+  "size": 1883
 }
 
 //// [/home/src/projects/project2/index.d.ts]
@@ -743,7 +878,7 @@ exports.y = 10;
 
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -758,32 +893,43 @@ exports.y = 10;
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11999455899-export const y = 10",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11999455899-export const y = 10",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -809,7 +955,7 @@ exports.y = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 981
+  "size": 1065
 }
 
 //// [/home/src/projects/project3/index.d.ts]
@@ -824,7 +970,7 @@ exports.z = 10;
 
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -839,32 +985,43 @@ exports.z = 10;
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -890,7 +1047,7 @@ exports.z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 981
+  "size": 1065
 }
 
 //// [/home/src/projects/project4/index.d.ts]
@@ -905,7 +1062,7 @@ exports.z = 10;
 
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.esnext.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.esnext.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -921,41 +1078,54 @@ exports.z = 10;
       "../../lib/lib.esnext.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -982,6 +1152,6 @@ exports.z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1102
+  "size": 1204
 }
 
diff --git a/tests/baselines/reference/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js b/tests/baselines/reference/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js
index e3a2bc0a87bd4..c8b66cdc3684e 100644
--- a/tests/baselines/reference/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js
+++ b/tests/baselines/reference/tsbuild/moduleResolution/impliedNodeFormat-differs-between-projects-for-shared-file.js
@@ -78,6 +78,11 @@ Output::
 
 [12:00:24 AM] Building project '/src/projects/a/tsconfig.json'...
 
+File '/src/projects/a/src/package.json' does not exist.
+File '/src/projects/a/package.json' does not exist.
+File '/src/projects/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving type reference directive 'pg', containing file '/src/projects/a/__inferred type names__.ts', root directory '/src/projects/a/node_modules/@types,/src/projects/node_modules/@types,/src/node_modules/@types,/node_modules/@types'. ========
 Resolving with primary search path '/src/projects/a/node_modules/@types, /src/projects/node_modules/@types, /src/node_modules/@types, /node_modules/@types'.
 Directory '/src/projects/a/node_modules/@types' does not exist, skipping all lookups in it.
@@ -88,6 +93,9 @@ Found 'package.json' at '/src/projects/node_modules/@types/pg/package.json'.
 File '/src/projects/node_modules/@types/pg/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/src/projects/node_modules/@types/pg/index.d.ts', result '/src/projects/node_modules/@types/pg/index.d.ts'.
 ======== Type reference directive 'pg' was successfully resolved to '/src/projects/node_modules/@types/pg/index.d.ts', primary: true. ========
+File '/src/projects/node_modules/@types/pg/package.json' exists according to earlier cached lookups.
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.d.ts
   Default library for target 'es5'
 src/projects/a/src/index.ts
@@ -125,8 +133,8 @@ File '/src/projects/node_modules/@types/pg/package.json' exists according to ear
 File '/src/projects/node_modules/@types/pg/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/src/projects/node_modules/@types/pg/index.d.ts', result '/src/projects/node_modules/@types/pg/index.d.ts'.
 ======== Type reference directive 'pg' was successfully resolved to '/src/projects/node_modules/@types/pg/index.d.ts', primary: true. ========
-File '/lib/package.json' does not exist.
-File '/package.json' does not exist.
+File '/lib/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/lib.es2022.full.d.ts
   Default library for target 'es2022'
 src/projects/node_modules/@types/pg/index.d.ts
diff --git a/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly-with-preserveSymlinks.js b/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly-with-preserveSymlinks.js
index f2ae9fae822e1..a0962a1649b46 100644
--- a/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly-with-preserveSymlinks.js
@@ -65,6 +65,8 @@ Output::
 
 [HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'const' from '/user/username/projects/myproject/packages/pkg2/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 'baseUrl' option is set to '/user/username/projects/myproject/packages/pkg2', using this value to resolve non-relative module name 'const'.
@@ -72,10 +74,20 @@ Resolving module name 'const' relative to base url '/user/username/projects/mypr
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const', target file types: TypeScript, Declaration.
 File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
 ======== Module name 'const' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Project 'packages/pkg1/tsconfig.json' is out of date because output file 'packages/pkg1/build/index.js' does not exist
 
 [HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg1/tsconfig.json'...
 
+File '/user/username/projects/myproject/packages/pkg1/package.json' does not exist.
+File '/user/username/projects/myproject/packages/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -96,6 +108,8 @@ File '/user/username/projects/myproject/node_modules/pkg2/build/index.tsx' does
 File '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' exists - use it as a name resolution result.
 'package.json' does not have a 'peerDependencies' field.
 ======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' with Package ID 'pkg2/build/index.d.ts@1.0.0'. ========
+File '/user/username/projects/myproject/node_modules/pkg2/build/package.json' does not exist.
+File '/user/username/projects/myproject/node_modules/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'const' from '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/myproject/packages/pkg2/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
@@ -104,6 +118,11 @@ Resolving module name 'const' relative to base url '/user/username/projects/mypr
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const', target file types: TypeScript, Declaration.
 File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
 ======== Module name 'const' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 
 
 //// [/user/username/projects/myproject/packages/pkg2/build/const.js]
@@ -125,7 +144,7 @@ export type { TheNum } from 'const';
 
 
 //// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../const.ts","../index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-11202312776-export type TheNum = 42;","signature":"-13194036030-export type TheNum = 42;\n"},{"version":"-10837689162-export type { TheNum } from 'const';","signature":"-9751391360-export type { TheNum } from 'const';\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../const.ts","../index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11202312776-export type TheNum = 42;","signature":"-13194036030-export type TheNum = 42;\n","impliedFormat":1},{"version":"-10837689162-export type { TheNum } from 'const';","signature":"-9751391360-export type { TheNum } from 'const';\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -144,27 +163,33 @@ export type { TheNum } from 'const';
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../const.ts": {
         "original": {
           "version": "-11202312776-export type TheNum = 42;",
-          "signature": "-13194036030-export type TheNum = 42;\n"
+          "signature": "-13194036030-export type TheNum = 42;\n",
+          "impliedFormat": 1
         },
         "version": "-11202312776-export type TheNum = 42;",
-        "signature": "-13194036030-export type TheNum = 42;\n"
+        "signature": "-13194036030-export type TheNum = 42;\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "-10837689162-export type { TheNum } from 'const';",
-          "signature": "-9751391360-export type { TheNum } from 'const';\n"
+          "signature": "-9751391360-export type { TheNum } from 'const';\n",
+          "impliedFormat": 1
         },
         "version": "-10837689162-export type { TheNum } from 'const';",
-        "signature": "-9751391360-export type { TheNum } from 'const';\n"
+        "signature": "-9751391360-export type { TheNum } from 'const';\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -194,7 +219,7 @@ export type { TheNum } from 'const';
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 942
+  "size": 996
 }
 
 //// [/user/username/projects/myproject/packages/pkg1/build/index.js]
diff --git a/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly.js b/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly.js
index 717428c5c0466..6981ab4247dcf 100644
--- a/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly.js
+++ b/tests/baselines/reference/tsbuild/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly.js
@@ -63,6 +63,8 @@ Output::
 
 [HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'const' from '/user/username/projects/myproject/packages/pkg2/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 'baseUrl' option is set to '/user/username/projects/myproject/packages/pkg2', using this value to resolve non-relative module name 'const'.
@@ -70,10 +72,20 @@ Resolving module name 'const' relative to base url '/user/username/projects/mypr
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const', target file types: TypeScript, Declaration.
 File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
 ======== Module name 'const' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Project 'packages/pkg1/tsconfig.json' is out of date because output file 'packages/pkg1/build/index.js' does not exist
 
 [HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg1/tsconfig.json'...
 
+File '/user/username/projects/myproject/packages/pkg1/package.json' does not exist.
+File '/user/username/projects/myproject/packages/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -95,6 +107,8 @@ File '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' exis
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'.
 ======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/index.d.ts' with Package ID 'pkg2/build/index.d.ts@1.0.0'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'const' from '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/myproject/packages/pkg2/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
@@ -103,6 +117,11 @@ Resolving module name 'const' relative to base url '/user/username/projects/mypr
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const', target file types: TypeScript, Declaration.
 File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
 ======== Module name 'const' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 
 
 //// [/user/username/projects/myproject/packages/pkg2/build/const.js]
@@ -124,7 +143,7 @@ export type { TheNum } from 'const';
 
 
 //// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../const.ts","../index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-11202312776-export type TheNum = 42;","signature":"-13194036030-export type TheNum = 42;\n"},{"version":"-10837689162-export type { TheNum } from 'const';","signature":"-9751391360-export type { TheNum } from 'const';\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../const.ts","../index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11202312776-export type TheNum = 42;","signature":"-13194036030-export type TheNum = 42;\n","impliedFormat":1},{"version":"-10837689162-export type { TheNum } from 'const';","signature":"-9751391360-export type { TheNum } from 'const';\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -143,27 +162,33 @@ export type { TheNum } from 'const';
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../const.ts": {
         "original": {
           "version": "-11202312776-export type TheNum = 42;",
-          "signature": "-13194036030-export type TheNum = 42;\n"
+          "signature": "-13194036030-export type TheNum = 42;\n",
+          "impliedFormat": 1
         },
         "version": "-11202312776-export type TheNum = 42;",
-        "signature": "-13194036030-export type TheNum = 42;\n"
+        "signature": "-13194036030-export type TheNum = 42;\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "-10837689162-export type { TheNum } from 'const';",
-          "signature": "-9751391360-export type { TheNum } from 'const';\n"
+          "signature": "-9751391360-export type { TheNum } from 'const';\n",
+          "impliedFormat": 1
         },
         "version": "-10837689162-export type { TheNum } from 'const';",
-        "signature": "-9751391360-export type { TheNum } from 'const';\n"
+        "signature": "-9751391360-export type { TheNum } from 'const';\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -193,7 +218,7 @@ export type { TheNum } from 'const';
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 942
+  "size": 996
 }
 
 //// [/user/username/projects/myproject/packages/pkg1/build/index.js]
diff --git a/tests/baselines/reference/tsbuild/moduleResolution/type-reference-resolution-uses-correct-options-for-different-resolution-options-referenced-project.js b/tests/baselines/reference/tsbuild/moduleResolution/type-reference-resolution-uses-correct-options-for-different-resolution-options-referenced-project.js
index 623c41fae86b5..0f589c2192b1e 100644
--- a/tests/baselines/reference/tsbuild/moduleResolution/type-reference-resolution-uses-correct-options-for-different-resolution-options-referenced-project.js
+++ b/tests/baselines/reference/tsbuild/moduleResolution/type-reference-resolution-uses-correct-options-for-different-resolution-options-referenced-project.js
@@ -65,6 +65,9 @@ Output::
 
 [12:00:19 AM] Building project '/src/packages/pkg1.tsconfig.json'...
 
+File '/src/packages/package.json' does not exist.
+File '/src/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving type reference directive 'sometype', containing file '/src/packages/__inferred type names__.ts', root directory '/src/packages/typeroot1'. ========
 Resolving with primary search path '/src/packages/typeroot1'.
 File '/src/packages/typeroot1/sometype.d.ts' does not exist.
@@ -72,10 +75,20 @@ File '/src/packages/typeroot1/sometype/package.json' does not exist.
 File '/src/packages/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/src/packages/typeroot1/sometype/index.d.ts', result '/src/packages/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/src/packages/typeroot1/sometype/index.d.ts', primary: true. ========
+File '/src/packages/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/src/packages/typeroot1/package.json' does not exist.
+File '/src/packages/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 [12:00:25 AM] Project 'src/packages/pkg2.tsconfig.json' is out of date because output file 'src/packages/pkg2.tsconfig.tsbuildinfo' does not exist
 
 [12:00:26 AM] Building project '/src/packages/pkg2.tsconfig.json'...
 
+File '/src/packages/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/src/packages/__inferred type names__.ts', root directory '/src/packages/typeroot2'. ========
 Resolving with primary search path '/src/packages/typeroot2'.
 File '/src/packages/typeroot2/sometype.d.ts' does not exist.
@@ -83,11 +96,18 @@ File '/src/packages/typeroot2/sometype/package.json' does not exist.
 File '/src/packages/typeroot2/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/src/packages/typeroot2/sometype/index.d.ts', result '/src/packages/typeroot2/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/src/packages/typeroot2/sometype/index.d.ts', primary: true. ========
+File '/src/packages/typeroot2/sometype/package.json' does not exist according to earlier cached lookups.
+File '/src/packages/typeroot2/package.json' does not exist.
+File '/src/packages/package.json' does not exist according to earlier cached lookups.
+File '/src/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/lib/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 exitCode:: ExitStatus.Success
 
 
 //// [/src/packages/pkg1.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./pkg1_index.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-9601687719-export const theNum: TheNum = \"type1\";","signature":"-11475605505-export declare const theNum: TheNum;\n"},{"version":"-4557394441-declare type TheNum = \"type1\";","affectsGlobalScope":true}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./pkg1_index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./pkg1_index.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9601687719-export const theNum: TheNum = \"type1\";","signature":"-11475605505-export declare const theNum: TheNum;\n","impliedFormat":1},{"version":"-4557394441-declare type TheNum = \"type1\";","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./pkg1_index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/packages/pkg1.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,28 +121,34 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./pkg1_index.ts": {
         "original": {
           "version": "-9601687719-export const theNum: TheNum = \"type1\";",
-          "signature": "-11475605505-export declare const theNum: TheNum;\n"
+          "signature": "-11475605505-export declare const theNum: TheNum;\n",
+          "impliedFormat": 1
         },
         "version": "-9601687719-export const theNum: TheNum = \"type1\";",
-        "signature": "-11475605505-export declare const theNum: TheNum;\n"
+        "signature": "-11475605505-export declare const theNum: TheNum;\n",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
         "original": {
           "version": "-4557394441-declare type TheNum = \"type1\";",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-4557394441-declare type TheNum = \"type1\";",
         "signature": "-4557394441-declare type TheNum = \"type1\";",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -143,7 +169,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./pkg1_index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 976
+  "size": 1030
 }
 
 //// [/src/packages/pkg1_index.d.ts]
@@ -158,7 +184,7 @@ exports.theNum = "type1";
 
 
 //// [/src/packages/pkg2.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./pkg2_index.ts","./typeroot2/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12823281204-export const theNum: TheNum2 = \"type2\";","signature":"-13622769679-export declare const theNum: TheNum2;\n"},{"version":"-980425686-declare type TheNum2 = \"type2\";","affectsGlobalScope":true}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./pkg2_index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./pkg2_index.ts","./typeroot2/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12823281204-export const theNum: TheNum2 = \"type2\";","signature":"-13622769679-export declare const theNum: TheNum2;\n","impliedFormat":1},{"version":"-980425686-declare type TheNum2 = \"type2\";","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./pkg2_index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/packages/pkg2.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -172,28 +198,34 @@ exports.theNum = "type1";
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./pkg2_index.ts": {
         "original": {
           "version": "-12823281204-export const theNum: TheNum2 = \"type2\";",
-          "signature": "-13622769679-export declare const theNum: TheNum2;\n"
+          "signature": "-13622769679-export declare const theNum: TheNum2;\n",
+          "impliedFormat": 1
         },
         "version": "-12823281204-export const theNum: TheNum2 = \"type2\";",
-        "signature": "-13622769679-export declare const theNum: TheNum2;\n"
+        "signature": "-13622769679-export declare const theNum: TheNum2;\n",
+        "impliedFormat": "commonjs"
       },
       "./typeroot2/sometype/index.d.ts": {
         "original": {
           "version": "-980425686-declare type TheNum2 = \"type2\";",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-980425686-declare type TheNum2 = \"type2\";",
         "signature": "-980425686-declare type TheNum2 = \"type2\";",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -214,7 +246,7 @@ exports.theNum = "type1";
     "latestChangedDtsFile": "./pkg2_index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 979
+  "size": 1033
 }
 
 //// [/src/packages/pkg2_index.d.ts]
diff --git a/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-resolve-correctly.js b/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-resolve-correctly.js
index 2952a162bbbc0..ed82fad16008a 100644
--- a/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-resolve-correctly.js
+++ b/tests/baselines/reference/tsbuild/moduleSpecifiers/synthesized-module-specifiers-resolve-correctly.js
@@ -151,7 +151,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/src/lib/solution/common/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../solution/common/nominal.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n"],"root":[2],"options":{"composite":true,"outDir":"../..","rootDir":"../../..","skipLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./nominal.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../solution/common/nominal.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"../..","rootDir":"../../..","skipLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./nominal.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/solution/common/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -164,15 +164,22 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../../../lib/lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../solution/common/nominal.ts": {
+        "original": {
+          "version": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
+          "impliedFormat": 1
+        },
         "version": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
-        "signature": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n"
+        "signature": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -195,7 +202,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./nominal.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1124
+  "size": 1172
 }
 
 //// [/src/lib/solution/sub-project/index.d.ts]
@@ -209,7 +216,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/src/lib/solution/sub-project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../common/nominal.d.ts","../../../solution/sub-project/index.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",{"version":"-22894055505-import { Nominal } from '../common/nominal';\n\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","signature":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"}],"root":[3],"options":{"composite":true,"outDir":"../..","rootDir":"../../..","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../common/nominal.d.ts","../../../solution/sub-project/index.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n","impliedFormat":1},{"version":"-22894055505-import { Nominal } from '../common/nominal';\n\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","signature":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"outDir":"../..","rootDir":"../../..","skipLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/solution/sub-project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -228,23 +235,32 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../../../lib/lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../common/nominal.d.ts": {
+        "original": {
+          "version": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
+          "impliedFormat": 1
+        },
         "version": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
-        "signature": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n"
+        "signature": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
+        "impliedFormat": "commonjs"
       },
       "../../../solution/sub-project/index.ts": {
         "original": {
           "version": "-22894055505-import { Nominal } from '../common/nominal';\n\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
-          "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+          "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+          "impliedFormat": 1
         },
         "version": "-22894055505-import { Nominal } from '../common/nominal';\n\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
-        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -272,7 +288,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1437
+  "size": 1503
 }
 
 //// [/src/lib/solution/sub-project-2/index.d.ts]
@@ -297,7 +313,7 @@ function getVar() {
 
 
 //// [/src/lib/solution/sub-project-2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../common/nominal.d.ts","../sub-project/index.d.ts","../../../solution/sub-project-2/index.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true},"-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n","-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",{"version":"-13939373533-import { MyNominal } from '../sub-project/index';\n\nconst variable = {\n    key: 'value' as MyNominal,\n};\n\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}\n","signature":"-20490736360-import { MyNominal } from '../sub-project/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"}],"root":[4],"options":{"composite":true,"outDir":"../..","rootDir":"../../..","skipLibCheck":true},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../common/nominal.d.ts","../sub-project/index.d.ts","../../../solution/sub-project-2/index.ts"],"fileInfos":[{"version":"-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n","impliedFormat":1},{"version":"-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n","impliedFormat":1},{"version":"-13939373533-import { MyNominal } from '../sub-project/index';\n\nconst variable = {\n    key: 'value' as MyNominal,\n};\n\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}\n","signature":"-20490736360-import { MyNominal } from '../sub-project/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"../..","rootDir":"../../..","skipLibCheck":true},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/lib/solution/sub-project-2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -320,27 +336,41 @@ function getVar() {
       "../../../../lib/lib.d.ts": {
         "original": {
           "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
         "signature": "-32082413277-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface SymbolConstructor {\n    readonly species: symbol;\n    readonly toStringTag: symbol;\n}\ndeclare var Symbol: SymbolConstructor;\ninterface Symbol {\n    readonly [Symbol.toStringTag]: string;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../common/nominal.d.ts": {
+        "original": {
+          "version": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
+          "impliedFormat": 1
+        },
         "version": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
-        "signature": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n"
+        "signature": "-24498031910-export declare type Nominal<T, Name extends string> = T & {\n    [Symbol.species]: Name;\n};\n",
+        "impliedFormat": "commonjs"
       },
       "../sub-project/index.d.ts": {
+        "original": {
+          "version": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+          "impliedFormat": 1
+        },
         "version": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
-        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n"
+        "signature": "-25703752603-import { Nominal } from '../common/nominal';\nexport type MyNominal = Nominal<string, 'MyNominal'>;\n",
+        "impliedFormat": "commonjs"
       },
       "../../../solution/sub-project-2/index.ts": {
         "original": {
           "version": "-13939373533-import { MyNominal } from '../sub-project/index';\n\nconst variable = {\n    key: 'value' as MyNominal,\n};\n\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}\n",
-          "signature": "-20490736360-import { MyNominal } from '../sub-project/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"
+          "signature": "-20490736360-import { MyNominal } from '../sub-project/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "-13939373533-import { MyNominal } from '../sub-project/index';\n\nconst variable = {\n    key: 'value' as MyNominal,\n};\n\nexport function getVar(): keyof typeof variable {\n    return 'key';\n}\n",
-        "signature": "-20490736360-import { MyNominal } from '../sub-project/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n"
+        "signature": "-20490736360-import { MyNominal } from '../sub-project/index';\ndeclare const variable: {\n    key: MyNominal;\n};\nexport declare function getVar(): keyof typeof variable;\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -372,6 +402,6 @@ function getVar() {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1749
+  "size": 1845
 }
 
diff --git a/tests/baselines/reference/tsbuild/noEmit/semantic-errors-with-incremental.js b/tests/baselines/reference/tsbuild/noEmit/semantic-errors-with-incremental.js
index 1a98d170aef07..42e34149d5157 100644
--- a/tests/baselines/reference/tsbuild/noEmit/semantic-errors-with-incremental.js
+++ b/tests/baselines/reference/tsbuild/noEmit/semantic-errors-with-incremental.js
@@ -68,7 +68,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1311033573-const a: number = \"hello\"","affectsGlobalScope":true}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./a.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'string' is not assignable to type 'number'."}]]],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1311033573-const a: number = \"hello\"","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./a.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'string' is not assignable to type 'number'."}]]],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -81,20 +81,24 @@ Shape signatures in builder refreshed for::
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "1311033573-const a: number = \"hello\"",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "1311033573-const a: number = \"hello\"",
         "signature": "1311033573-const a: number = \"hello\"",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -128,7 +132,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 882
+  "size": 918
 }
 
 
@@ -214,7 +218,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4011451714-const a = \"hello\"","signature":"-5460434953-declare const a = \"hello\";\n","affectsGlobalScope":true}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"4011451714-const a = \"hello\"","signature":"-5460434953-declare const a = \"hello\";\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -227,21 +231,25 @@ Shape signatures in builder refreshed for::
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4011451714-const a = \"hello\"",
           "signature": "-5460434953-declare const a = \"hello\";\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4011451714-const a = \"hello\"",
         "signature": "-5460434953-declare const a = \"hello\";\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -263,7 +271,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 797
+  "size": 833
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/noEmit/syntax-errors-with-incremental.js b/tests/baselines/reference/tsbuild/noEmit/syntax-errors-with-incremental.js
index d8dc60f363d0d..41647268cfb01 100644
--- a/tests/baselines/reference/tsbuild/noEmit/syntax-errors-with-incremental.js
+++ b/tests/baselines/reference/tsbuild/noEmit/syntax-errors-with-incremental.js
@@ -64,7 +64,7 @@ No shapes updated in the builder::
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"2464268576-const a = \"hello","signature":false,"affectsGlobalScope":true}],"root":[2],"referencedMap":[],"changeFileSet":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"2464268576-const a = \"hello","signature":false,"affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"referencedMap":[],"changeFileSet":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -78,19 +78,23 @@ No shapes updated in the builder::
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2464268576-const a = \"hello",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2464268576-const a = \"hello",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -106,7 +110,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 730
+  "size": 766
 }
 
 
@@ -193,7 +197,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4011451714-const a = \"hello\"","signature":"-5460434953-declare const a = \"hello\";\n","affectsGlobalScope":true}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"4011451714-const a = \"hello\"","signature":"-5460434953-declare const a = \"hello\";\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -206,21 +210,25 @@ Shape signatures in builder refreshed for::
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4011451714-const a = \"hello\"",
           "signature": "-5460434953-declare const a = \"hello\";\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4011451714-const a = \"hello\"",
         "signature": "-5460434953-declare const a = \"hello\";\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -242,7 +250,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 797
+  "size": 833
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/noEmitOnError/semantic-errors-with-incremental.js b/tests/baselines/reference/tsbuild/noEmitOnError/semantic-errors-with-incremental.js
index 36022675ebebf..8cee7c9901d21 100644
--- a/tests/baselines/reference/tsbuild/noEmitOnError/semantic-errors-with-incremental.js
+++ b/tests/baselines/reference/tsbuild/noEmitOnError/semantic-errors-with-incremental.js
@@ -83,7 +83,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,23 +103,40 @@ Shape signatures in builder refreshed for::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
+          "impliedFormat": 1
+        },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;"
+        "signature": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -178,7 +195,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1147
+  "size": 1255
 }
 
 
@@ -277,7 +294,7 @@ console.log("hi");
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -297,27 +314,41 @@ console.log("hi");
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -350,7 +381,7 @@ console.log("hi");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1026
+  "size": 1122
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/noEmitOnError/syntax-errors-with-incremental.js b/tests/baselines/reference/tsbuild/noEmitOnError/syntax-errors-with-incremental.js
index b6200d3561abf..948263c96839c 100644
--- a/tests/baselines/reference/tsbuild/noEmitOnError/syntax-errors-with-incremental.js
+++ b/tests/baselines/reference/tsbuild/noEmitOnError/syntax-errors-with-incremental.js
@@ -78,7 +78,7 @@ No shapes updated in the builder::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","signature":false},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","signature":false},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":false}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"changeFileSet":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","signature":false,"impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","signature":false,"impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":false,"impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"changeFileSet":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,31 +99,39 @@ No shapes updated in the builder::
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
         "original": {
           "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -156,7 +164,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1080
+  "size": 1152
 }
 
 
@@ -265,7 +273,7 @@ console.log("hi");
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -285,31 +293,42 @@ console.log("hi");
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -342,7 +361,7 @@ console.log("hi");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1086
+  "size": 1170
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/outFile/baseline-sectioned-sourcemaps.js b/tests/baselines/reference/tsbuild/outFile/baseline-sectioned-sourcemaps.js
index c73edeeab60df..137e1a25afa71 100644
--- a/tests/baselines/reference/tsbuild/outFile/baseline-sectioned-sourcemaps.js
+++ b/tests/baselines/reference/tsbuild/outFile/baseline-sectioned-sourcemaps.js
@@ -572,7 +572,7 @@ sourceFile:../second/second_part2.ts
 >>>//# sourceMappingURL=second-output.js.map
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -583,9 +583,30 @@ sourceFile:../second/second_part2.ts
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -612,7 +633,7 @@ sourceFile:../second/second_part2.ts
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -916,7 +937,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -928,10 +949,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -960,7 +1009,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
@@ -1074,7 +1123,7 @@ sourceFile:../../third_part1.ts
 >>>//# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -1086,10 +1135,38 @@ sourceFile:../../third_part1.ts
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1112,7 +1189,7 @@ sourceFile:../../third_part1.ts
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1385
 }
 
 
@@ -1485,7 +1562,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-21189362626-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-21189362626-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -1497,10 +1574,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-21189362626-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-21189362626-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-21189362626-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1529,7 +1634,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1270
+  "size": 1390
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts.map] file written with same contents
@@ -1538,7 +1643,7 @@ sourceFile:../first_part3.ts
 //// [/src/third/thirdjs/output/third-output.js.map] file written with same contents
 //// [/src/third/thirdjs/output/third-output.js.map.baseline.txt] file written with same contents
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -1550,10 +1655,38 @@ sourceFile:../first_part3.ts
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1576,7 +1709,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1264
+  "size": 1384
 }
 
 
@@ -1824,7 +1957,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-21292400928-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-21292400928-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-14566027737-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hola, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -1836,10 +1969,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-21292400928-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-21292400928-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
+          "impliedFormat": 1
+        },
+        "version": "-21292400928-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hola, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1868,7 +2029,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1285
+  "size": 1405
 }
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/outFile/builds-till-project-specified.js b/tests/baselines/reference/tsbuild/outFile/builds-till-project-specified.js
index e23cb13bf1d94..2b22c60a3654c 100644
--- a/tests/baselines/reference/tsbuild/outFile/builds-till-project-specified.js
+++ b/tests/baselines/reference/tsbuild/outFile/builds-till-project-specified.js
@@ -169,7 +169,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -180,9 +180,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -209,6 +230,6 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
diff --git a/tests/baselines/reference/tsbuild/outFile/clean-projects.js b/tests/baselines/reference/tsbuild/outFile/clean-projects.js
index 37b14ba24cac8..4c3515cccb89c 100644
--- a/tests/baselines/reference/tsbuild/outFile/clean-projects.js
+++ b/tests/baselines/reference/tsbuild/outFile/clean-projects.js
@@ -50,7 +50,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -61,9 +61,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -90,7 +111,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -120,7 +141,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -132,10 +153,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -164,7 +213,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/first/first_PART1.ts]
@@ -265,7 +314,7 @@ c.doSomething();
 {"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -277,10 +326,38 @@ c.doSomething();
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -303,7 +380,7 @@ c.doSomething();
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1385
 }
 
 //// [/src/third/third_part1.ts]
diff --git a/tests/baselines/reference/tsbuild/outFile/cleans-till-project-specified.js b/tests/baselines/reference/tsbuild/outFile/cleans-till-project-specified.js
index 17de0e161b806..43363ac987f3d 100644
--- a/tests/baselines/reference/tsbuild/outFile/cleans-till-project-specified.js
+++ b/tests/baselines/reference/tsbuild/outFile/cleans-till-project-specified.js
@@ -49,7 +49,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -60,9 +60,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -89,7 +110,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -119,7 +140,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -131,10 +152,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -163,7 +212,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/first/first_PART1.ts]
@@ -264,7 +313,7 @@ c.doSomething();
 {"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -276,10 +325,38 @@ c.doSomething();
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -302,7 +379,7 @@ c.doSomething();
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1385
 }
 
 //// [/src/third/third_part1.ts]
diff --git a/tests/baselines/reference/tsbuild/outFile/non-module-projects-without-prepend.js b/tests/baselines/reference/tsbuild/outFile/non-module-projects-without-prepend.js
index 126d05075904b..e2bcaffd9717b 100644
--- a/tests/baselines/reference/tsbuild/outFile/non-module-projects-without-prepend.js
+++ b/tests/baselines/reference/tsbuild/outFile/non-module-projects-without-prepend.js
@@ -203,7 +203,7 @@ function f() {
 {"version":3,"file":"first_part3.js","sourceRoot":"","sources":["first_part3.ts"],"names":[],"mappings":"AAAA,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./first_part1.ts","./first_part2.ts","./first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","signature":"-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n","affectsGlobalScope":true},{"version":"6007494133-console.log(f());\n","signature":"5381-","affectsGlobalScope":true},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","signature":"-6420944280-declare function f(): string;\n","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"module":0,"removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./first_part3.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./first_part1.ts","./first_part2.ts","./first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","signature":"-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"6007494133-console.log(f());\n","signature":"5381-","affectsGlobalScope":true,"impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","signature":"-6420944280-declare function f(): string;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"module":0,"removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./first_part3.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -218,41 +218,49 @@ function f() {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./first_part1.ts": {
         "original": {
           "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
           "signature": "-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
         "signature": "-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./first_part2.ts": {
         "original": {
           "version": "6007494133-console.log(f());\n",
           "signature": "5381-",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "6007494133-console.log(f());\n",
         "signature": "5381-",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./first_part3.ts": {
         "original": {
           "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
           "signature": "-6420944280-declare function f(): string;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
         "signature": "-6420944280-declare function f(): string;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -287,7 +295,7 @@ function f() {
     "latestChangedDtsFile": "./first_part3.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1481
+  "size": 1553
 }
 
 //// [/src/second/second_part1.d.ts]
@@ -337,7 +345,7 @@ var C = (function () {
 {"version":3,"file":"second_part2.js","sourceRoot":"","sources":["second_part2.ts"],"names":[],"mappings":"AAAA;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/second/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./second_part1.ts","./second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","signature":"-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n","affectsGlobalScope":true},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","signature":"-4226833059-declare class C {\n    doSomething(): void;\n}\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":0,"removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./second_part2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./second_part1.ts","./second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","signature":"-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","signature":"-4226833059-declare class C {\n    doSomething(): void;\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":0,"removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./second_part2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/second/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -351,31 +359,37 @@ var C = (function () {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./second_part1.ts": {
         "original": {
           "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
           "signature": "-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
         "signature": "-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./second_part2.ts": {
         "original": {
           "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
           "signature": "-4226833059-declare class C {\n    doSomething(): void;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
         "signature": "-4226833059-declare class C {\n    doSomething(): void;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -407,7 +421,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second_part2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1355
+  "size": 1409
 }
 
 //// [/src/third/third_part1.d.ts]
@@ -426,7 +440,7 @@ c.doSomething();
 {"version":3,"file":"third_part1.js","sourceRoot":"","sources":["third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../first/first_part1.d.ts","../first/first_part2.d.ts","../first/first_part3.d.ts","../second/second_part1.d.ts","../second/second_part2.d.ts","./third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n","affectsGlobalScope":true},"-2054710634-//# sourceMappingURL=first_part2.d.ts.map",{"version":"-6420944280-declare function f(): string;\n","affectsGlobalScope":true},{"version":"-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n","affectsGlobalScope":true},{"version":"-4226833059-declare class C {\n    doSomething(): void;\n}\n","affectsGlobalScope":true},{"version":"7305100057-var c = new C();\nc.doSomething();\n","signature":"1894672131-declare var c: C;\n","affectsGlobalScope":true}],"root":[7],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":0,"removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"semanticDiagnosticsPerFile":[1,2,3,4,5,6,7],"latestChangedDtsFile":"./third_part1.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../first/first_part1.d.ts","../first/first_part2.d.ts","../first/first_part3.d.ts","../second/second_part1.d.ts","../second/second_part2.d.ts","./third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2054710634-//# sourceMappingURL=first_part2.d.ts.map","impliedFormat":1},{"version":"-6420944280-declare function f(): string;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4226833059-declare class C {\n    doSomething(): void;\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","signature":"1894672131-declare var c: C;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[7],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":0,"removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"semanticDiagnosticsPerFile":[1,2,3,4,5,6,7],"latestChangedDtsFile":"./third_part1.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -444,61 +458,78 @@ c.doSomething();
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../first/first_part1.d.ts": {
         "original": {
           "version": "-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n",
         "signature": "-14851202444-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../first/first_part2.d.ts": {
+        "original": {
+          "version": "-2054710634-//# sourceMappingURL=first_part2.d.ts.map",
+          "impliedFormat": 1
+        },
         "version": "-2054710634-//# sourceMappingURL=first_part2.d.ts.map",
-        "signature": "-2054710634-//# sourceMappingURL=first_part2.d.ts.map"
+        "signature": "-2054710634-//# sourceMappingURL=first_part2.d.ts.map",
+        "impliedFormat": "commonjs"
       },
       "../first/first_part3.d.ts": {
         "original": {
           "version": "-6420944280-declare function f(): string;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-6420944280-declare function f(): string;\n",
         "signature": "-6420944280-declare function f(): string;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../second/second_part1.d.ts": {
         "original": {
           "version": "-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n",
         "signature": "-12385043917-declare namespace N {\n}\ndeclare namespace N {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../second/second_part2.d.ts": {
         "original": {
           "version": "-4226833059-declare class C {\n    doSomething(): void;\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-4226833059-declare class C {\n    doSomething(): void;\n}\n",
         "signature": "-4226833059-declare class C {\n    doSomething(): void;\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./third_part1.ts": {
         "original": {
           "version": "7305100057-var c = new C();\nc.doSomething();\n",
           "signature": "1894672131-declare var c: C;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "7305100057-var c = new C();\nc.doSomething();\n",
         "signature": "1894672131-declare var c: C;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -530,6 +561,6 @@ c.doSomething();
     "latestChangedDtsFile": "./third_part1.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1665
+  "size": 1803
 }
 
diff --git a/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-command-line-incremental-flag-changes-between-non-dts-changes.js b/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-command-line-incremental-flag-changes-between-non-dts-changes.js
index 36234a5e967ea..a2aec2714e27b 100644
--- a/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-command-line-incremental-flag-changes-between-non-dts-changes.js
+++ b/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-command-line-incremental-flag-changes-between-non-dts-changes.js
@@ -187,7 +187,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -198,9 +198,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -227,7 +248,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -257,7 +278,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -269,10 +290,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -301,7 +350,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
@@ -320,7 +369,7 @@ c.doSomething();
 {"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1}},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -332,10 +381,38 @@ c.doSomething();
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -355,7 +432,7 @@ c.doSomething();
     }
   },
   "version": "FakeTSVersion",
-  "size": 1155
+  "size": 1275
 }
 
 
@@ -413,7 +490,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACXf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -425,10 +502,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
+          "impliedFormat": 1
+        },
+        "version": "-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -457,7 +562,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1287
+  "size": 1407
 }
 
 
@@ -516,7 +621,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AACf,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AAAA,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACX9B,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22658061710-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);console.log(s);","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22658061710-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);console.log(s);","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -528,10 +633,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22658061710-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);console.log(s);",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22658061710-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);console.log(s);",
+          "impliedFormat": 1
+        },
+        "version": "-22658061710-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);console.log(s);",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -560,7 +693,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1302
+  "size": 1422
 }
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js b/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js
index 05ad3c130c315..d89d424f12347 100644
--- a/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js
+++ b/tests/baselines/reference/tsbuild/outFile/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js
@@ -49,7 +49,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -60,9 +60,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -89,7 +110,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -119,7 +140,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -131,10 +152,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -163,7 +212,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/first/first_PART1.ts]
@@ -264,7 +313,7 @@ c.doSomething();
 {"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -276,10 +325,38 @@ c.doSomething();
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -302,7 +379,7 @@ c.doSomething();
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1385
 }
 
 //// [/src/third/third_part1.ts]
@@ -365,7 +442,7 @@ exitCode:: ExitStatus.Success
 //// [/src/2/second-output.js] file written with same contents
 //// [/src/2/second-output.js.map] file written with same contents
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSCurrentVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSCurrentVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -376,9 +453,30 @@ exitCode:: ExitStatus.Success
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -405,7 +503,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSCurrentVersion",
-  "size": 1223
+  "size": 1313
 }
 
 //// [/src/first/bin/first-output.d.ts] file written with same contents
@@ -413,7 +511,7 @@ exitCode:: ExitStatus.Success
 //// [/src/first/bin/first-output.js] file written with same contents
 //// [/src/first/bin/first-output.js.map] file written with same contents
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSCurrentVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSCurrentVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -425,10 +523,38 @@ exitCode:: ExitStatus.Success
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -457,7 +583,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSCurrentVersion",
-  "size": 1279
+  "size": 1399
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts] file written with same contents
@@ -465,7 +591,7 @@ exitCode:: ExitStatus.Success
 //// [/src/third/thirdjs/output/third-output.js] file written with same contents
 //// [/src/third/thirdjs/output/third-output.js.map] file written with same contents
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSCurrentVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSCurrentVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -477,10 +603,38 @@ exitCode:: ExitStatus.Success
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -503,6 +657,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSCurrentVersion",
-  "size": 1272
+  "size": 1392
 }
 
diff --git a/tests/baselines/reference/tsbuild/outFile/tsbuildinfo-is-not-generated-when-incremental-is-set-to-false.js b/tests/baselines/reference/tsbuild/outFile/tsbuildinfo-is-not-generated-when-incremental-is-set-to-false.js
index d503f5665be21..1e6a71f9a3e18 100644
--- a/tests/baselines/reference/tsbuild/outFile/tsbuildinfo-is-not-generated-when-incremental-is-set-to-false.js
+++ b/tests/baselines/reference/tsbuild/outFile/tsbuildinfo-is-not-generated-when-incremental-is-set-to-false.js
@@ -187,7 +187,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -198,9 +198,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -227,7 +248,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -257,7 +278,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -269,10 +290,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -301,7 +350,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
diff --git a/tests/baselines/reference/tsbuild/outFile/verify-buildInfo-absence-results-in-new-build.js b/tests/baselines/reference/tsbuild/outFile/verify-buildInfo-absence-results-in-new-build.js
index de13deb4e963a..1867427dddd1b 100644
--- a/tests/baselines/reference/tsbuild/outFile/verify-buildInfo-absence-results-in-new-build.js
+++ b/tests/baselines/reference/tsbuild/outFile/verify-buildInfo-absence-results-in-new-build.js
@@ -50,7 +50,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -61,9 +61,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -90,7 +111,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -129,10 +150,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -161,7 +210,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/first/first_PART1.ts]
@@ -262,7 +311,7 @@ c.doSomething();
 {"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -274,10 +323,38 @@ c.doSomething();
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -300,7 +377,7 @@ c.doSomething();
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1385
 }
 
 //// [/src/third/third_part1.ts]
@@ -363,7 +440,7 @@ exitCode:: ExitStatus.Success
 //// [/src/first/bin/first-output.js] file written with same contents
 //// [/src/first/bin/first-output.js.map] file written with same contents
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt] file written with same contents
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-incremental.js b/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-incremental.js
index d1c0e0efa5e8f..53099bc8e868c 100644
--- a/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-incremental.js
+++ b/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-incremental.js
@@ -538,7 +538,7 @@ sourceFile:../second/second_part2.ts
 >>>//# sourceMappingURL=second-output.js.map
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -549,9 +549,30 @@ sourceFile:../second/second_part2.ts
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -578,7 +599,7 @@ sourceFile:../second/second_part2.ts
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -882,7 +903,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -894,10 +915,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -926,7 +975,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
@@ -1040,7 +1089,7 @@ sourceFile:../../third_part1.ts
 >>>//# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1}},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -1052,10 +1101,38 @@ sourceFile:../../third_part1.ts
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1075,6 +1152,6 @@ sourceFile:../../third_part1.ts
     }
   },
   "version": "FakeTSVersion",
-  "size": 1155
+  "size": 1275
 }
 
diff --git a/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-uses-project-references.js b/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-uses-project-references.js
index 01e26e7db1fd8..1e08b857be728 100644
--- a/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-uses-project-references.js
+++ b/tests/baselines/reference/tsbuild/outFile/when-final-project-is-not-composite-but-uses-project-references.js
@@ -538,7 +538,7 @@ sourceFile:../second/second_part2.ts
 >>>//# sourceMappingURL=second-output.js.map
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -549,9 +549,30 @@ sourceFile:../second/second_part2.ts
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -578,7 +599,7 @@ sourceFile:../second/second_part2.ts
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -882,7 +903,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -894,10 +915,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -926,7 +975,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
@@ -1266,7 +1315,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -1278,10 +1327,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
+          "impliedFormat": 1
+        },
+        "version": "-20304251376-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\nconsole.log(s);",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1310,6 +1387,6 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1287
+  "size": 1407
 }
 
diff --git a/tests/baselines/reference/tsbuild/outFile/when-final-project-specifies-tsBuildInfoFile.js b/tests/baselines/reference/tsbuild/outFile/when-final-project-specifies-tsBuildInfoFile.js
index 4a7842b695de1..542b46776a47e 100644
--- a/tests/baselines/reference/tsbuild/outFile/when-final-project-specifies-tsBuildInfoFile.js
+++ b/tests/baselines/reference/tsbuild/outFile/when-final-project-specifies-tsBuildInfoFile.js
@@ -539,7 +539,7 @@ sourceFile:../second/second_part2.ts
 >>>//# sourceMappingURL=second-output.js.map
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -550,9 +550,30 @@ sourceFile:../second/second_part2.ts
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -579,7 +600,7 @@ sourceFile:../second/second_part2.ts
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -883,7 +904,7 @@ sourceFile:../first_part3.ts
 >>>//# sourceMappingURL=first-output.js.map
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -895,10 +916,38 @@ sourceFile:../first_part3.ts
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -927,7 +976,7 @@ sourceFile:../first_part3.ts
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
@@ -1041,7 +1090,7 @@ sourceFile:../../third_part1.ts
 >>>//# sourceMappingURL=third-output.js.map
 
 //// [/src/third/thirdjs/output/third.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1,"tsBuildInfoFile":"./third.tsbuildinfo"},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1,"tsBuildInfoFile":"./third.tsbuildinfo"},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third.tsbuildinfo.readable.baseline.txt]
 {
@@ -1053,10 +1102,38 @@ sourceFile:../../third_part1.ts
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1080,6 +1157,6 @@ sourceFile:../../third_part1.ts
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1305
+  "size": 1425
 }
 
diff --git a/tests/baselines/reference/tsbuild/outFile/when-input-file-text-does-not-change-but-its-modified-time-changes.js b/tests/baselines/reference/tsbuild/outFile/when-input-file-text-does-not-change-but-its-modified-time-changes.js
index 36e58a0608de9..638e6e03683b8 100644
--- a/tests/baselines/reference/tsbuild/outFile/when-input-file-text-does-not-change-but-its-modified-time-changes.js
+++ b/tests/baselines/reference/tsbuild/outFile/when-input-file-text-does-not-change-but-its-modified-time-changes.js
@@ -187,7 +187,7 @@ var C = (function () {
 {"version":3,"file":"second-output.js","sourceRoot":"","sources":["../second/second_part1.ts","../second/second_part2.ts"],"names":[],"mappings":"AAIA,IAAU,CAAC,CAMV;AAND,WAAU,CAAC;IACP,SAAS,CAAC;QACN,OAAO,CAAC,GAAG,CAAC,SAAS,CAAC,CAAC;IAC3B,CAAC;IAED,CAAC,EAAE,CAAC;AACR,CAAC,EANS,CAAC,KAAD,CAAC,QAMV;ACVD;IAAA;IAIA,CAAC;IAHG,uBAAW,GAAX;QACI,OAAO,CAAC,GAAG,CAAC,oBAAoB,CAAC,CAAC;IACtC,CAAC;IACL,QAAC;AAAD,CAAC,AAJD,IAIC"}
 
 //// [/src/2/second-output.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../second/second_part1.ts","../second/second_part2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n","impliedFormat":1},{"version":"3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./second-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","latestChangedDtsFile":"./second-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/2/second-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -198,9 +198,30 @@ var C = (function () {
       "../second/second_part2.ts"
     ],
     "fileInfos": {
-      "../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../second/second_part1.ts": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
-      "../second/second_part2.ts": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n"
+      "../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part1.ts": {
+        "original": {
+          "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-12195290447-namespace N {\n    // Comment text\n}\n\nnamespace N {\n    function f() {\n        console.log('testing');\n    }\n\n    f();\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../second/second_part2.ts": {
+        "original": {
+          "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "3642692259-class C {\n    doSomething() {\n        console.log(\"something got done\");\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -227,7 +248,7 @@ var C = (function () {
     "latestChangedDtsFile": "./second-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1216
+  "size": 1306
 }
 
 //// [/src/first/bin/first-output.d.ts]
@@ -257,7 +278,7 @@ function f() {
 {"version":3,"file":"first-output.js","sourceRoot":"","sources":["../first_PART1.ts","../first_part2.ts","../first_part3.ts"],"names":[],"mappings":"AAIA,IAAM,CAAC,GAAG,cAAc,CAAC;AAMzB,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;ACVf,OAAO,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC;ACAjB,SAAS,CAAC;IACN,OAAO,gBAAgB,CAAC;AAC5B,CAAC"}
 
 //// [/src/first/bin/first-output.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","6007494133-console.log(f());\n","4357625305-function f() {\n    return \"JS does hoists\";\n}\n"],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../first_part1.ts","../first_part2.ts","../first_part3.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n","impliedFormat":1},{"version":"6007494133-console.log(f());\n","impliedFormat":1},{"version":"4357625305-function f() {\n    return \"JS does hoists\";\n}\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outFile":"./first-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","latestChangedDtsFile":"./first-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/first/bin/first-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -269,10 +290,38 @@ function f() {
       "../first_part3.ts"
     ],
     "fileInfos": {
-      "../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../first_part1.ts": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
-      "../first_part2.ts": "6007494133-console.log(f());\n",
-      "../first_part3.ts": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n"
+      "../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part1.ts": {
+        "original": {
+          "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+          "impliedFormat": 1
+        },
+        "version": "-22071182994-interface TheFirst {\n    none: any;\n}\n\nconst s = \"Hello, world\";\n\ninterface NoJsForHereEither {\n    none: any;\n}\n\nconsole.log(s);\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part2.ts": {
+        "original": {
+          "version": "6007494133-console.log(f());\n",
+          "impliedFormat": 1
+        },
+        "version": "6007494133-console.log(f());\n",
+        "impliedFormat": "commonjs"
+      },
+      "../first_part3.ts": {
+        "original": {
+          "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4357625305-function f() {\n    return \"JS does hoists\";\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -301,7 +350,7 @@ function f() {
     "latestChangedDtsFile": "./first-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1272
+  "size": 1392
 }
 
 //// [/src/third/thirdjs/output/third-output.d.ts]
@@ -320,7 +369,7 @@ c.doSomething();
 {"version":3,"file":"third-output.js","sourceRoot":"","sources":["../../third_part1.ts"],"names":[],"mappings":"AAAA,IAAI,CAAC,GAAG,IAAI,CAAC,EAAE,CAAC;AAChB,CAAC,CAAC,WAAW,EAAE,CAAC"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo]
-{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","7305100057-var c = new C();\nc.doSomething();\n"],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../lib/lib.d.ts","../../../first/bin/first-output.d.ts","../../../2/second-output.d.ts","../../third_part1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n","impliedFormat":1},{"version":"-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n","impliedFormat":1},{"version":"7305100057-var c = new C();\nc.doSomething();\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationMap":true,"outFile":"./third-output.js","removeComments":true,"skipDefaultLibCheck":true,"sourceMap":true,"strict":false,"target":1},"outSignature":"1894672131-declare var c: C;\n","latestChangedDtsFile":"./third-output.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/third/thirdjs/output/third-output.tsbuildinfo.readable.baseline.txt]
 {
@@ -332,10 +381,38 @@ c.doSomething();
       "../../third_part1.ts"
     ],
     "fileInfos": {
-      "../../../../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "../../../first/bin/first-output.d.ts": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
-      "../../../2/second-output.d.ts": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
-      "../../third_part1.ts": "7305100057-var c = new C();\nc.doSomething();\n"
+      "../../../../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "../../../first/bin/first-output.d.ts": {
+        "original": {
+          "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+          "impliedFormat": 1
+        },
+        "version": "-15957783529-interface TheFirst {\n    none: any;\n}\ndeclare const s = \"Hello, world\";\ninterface NoJsForHereEither {\n    none: any;\n}\ndeclare function f(): string;\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../../2/second-output.d.ts": {
+        "original": {
+          "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-2513601205-declare namespace N {\n}\ndeclare namespace N {\n}\ndeclare class C {\n    doSomething(): void;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../third_part1.ts": {
+        "original": {
+          "version": "7305100057-var c = new C();\nc.doSomething();\n",
+          "impliedFormat": 1
+        },
+        "version": "7305100057-var c = new C();\nc.doSomething();\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -358,7 +435,7 @@ c.doSomething();
     "latestChangedDtsFile": "./third-output.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1265
+  "size": 1385
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-not-specified-and-is-composite.js b/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-not-specified-and-is-composite.js
index 47f77bb0ebb71..9fbc950430ed6 100644
--- a/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-not-specified-and-is-composite.js
+++ b/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-not-specified-and-is-composite.js
@@ -52,7 +52,7 @@ exports.x = 10;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -65,19 +65,23 @@ exports.x = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/index.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -98,7 +102,7 @@ exports.x = 10;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 840
+  "size": 876
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-specified-but-not-all-files-belong-to-rootDir-and-is-composite.js b/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-specified-but-not-all-files-belong-to-rootDir-and-is-composite.js
index b8581da7adb6a..5f3d305c97351 100644
--- a/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-specified-but-not-all-files-belong-to-rootDir-and-is-composite.js
+++ b/tests/baselines/reference/tsbuild/outputPaths/when-rootDir-is-specified-but-not-all-files-belong-to-rootDir-and-is-composite.js
@@ -52,7 +52,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/index.ts","./types/type.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":false},{"version":"-4885977236-export type t = string;","signature":false}],"root":[2,3],"options":{"composite":true,"outDir":"./dist","rootDir":"./src"},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/index.ts","./types/type.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":false,"impliedFormat":1},{"version":"-4885977236-export type t = string;","signature":false,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./dist","rootDir":"./src"},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -67,24 +67,30 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-10726455937-export const x = 10;"
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./types/type.ts": {
         "original": {
           "version": "-4885977236-export type t = string;",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-4885977236-export type t = string;"
+        "version": "-4885977236-export type t = string;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -110,7 +116,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 872
+  "size": 926
 }
 
 
@@ -168,7 +174,7 @@ exports.x = 10;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/index.ts","./types/type.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-4885977236-export type t = string;","signature":"-6618426122-export type t = string;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./dist","rootDir":"./src"},"referencedMap":[],"latestChangedDtsFile":"./types/type.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/index.ts","./types/type.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-4885977236-export type t = string;","signature":"-6618426122-export type t = string;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./dist","rootDir":"./src"},"referencedMap":[],"latestChangedDtsFile":"./types/type.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,27 +188,33 @@ exports.x = 10;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./types/type.ts": {
         "original": {
           "version": "-4885977236-export type t = string;",
-          "signature": "-6618426122-export type t = string;\n"
+          "signature": "-6618426122-export type t = string;\n",
+          "impliedFormat": 1
         },
         "version": "-4885977236-export type t = string;",
-        "signature": "-6618426122-export type t = string;\n"
+        "signature": "-6618426122-export type t = string;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +236,7 @@ exports.x = 10;
     "latestChangedDtsFile": "./types/type.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 946
+  "size": 1000
 }
 
 //// [/src/types/type.d.ts]
diff --git a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/builds-correctly.js b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/builds-correctly.js
index 88858c9cde72b..5894c946478e9 100644
--- a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/builds-correctly.js
+++ b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/builds-correctly.js
@@ -87,7 +87,7 @@ exports.b = 0;
 
 
 //// [/src/dist/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../../src/main/b.ts","../../src/main/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13368948254-export const b = 0;\n","signature":"-5842658702-export declare const b = 0;\n"},{"version":"-18592354388-import { b } from './b';\nconst a = b;\n","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../../src/main/b.ts","../../src/main/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13368948254-export const b = 0;\n","signature":"-5842658702-export declare const b = 0;\n","impliedFormat":1},{"version":"-18592354388-import { b } from './b';\nconst a = b;\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,27 +106,33 @@ exports.b = 0;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/main/b.ts": {
         "original": {
           "version": "-13368948254-export const b = 0;\n",
-          "signature": "-5842658702-export declare const b = 0;\n"
+          "signature": "-5842658702-export declare const b = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-13368948254-export const b = 0;\n",
-        "signature": "-5842658702-export declare const b = 0;\n"
+        "signature": "-5842658702-export declare const b = 0;\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/main/a.ts": {
         "original": {
           "version": "-18592354388-import { b } from './b';\nconst a = b;\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-18592354388-import { b } from './b';\nconst a = b;\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -159,7 +165,7 @@ exports.b = 0;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1065
+  "size": 1119
 }
 
 //// [/src/dist/other/other.d.ts]
@@ -174,7 +180,7 @@ exports.Other = 0;
 
 
 //// [/src/dist/other/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n"}],"root":[2],"options":{"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"outDir":"..","rootDir":"../../src","skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/other/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -187,19 +193,23 @@ exports.Other = 0;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/other/other.ts": {
         "original": {
           "version": "-4254247902-export const Other = 0;\n",
-          "signature": "-10003600206-export declare const Other = 0;\n"
+          "signature": "-10003600206-export declare const Other = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-4254247902-export const Other = 0;\n",
-        "signature": "-10003600206-export declare const Other = 0;\n"
+        "signature": "-10003600206-export declare const Other = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,6 +233,6 @@ exports.Other = 0;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 924
+  "size": 960
 }
 
diff --git a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file-because-no-rootDir-in-the-base.js b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file-because-no-rootDir-in-the-base.js
index b0b451c0a79fb..c54b697725cec 100644
--- a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file-because-no-rootDir-in-the-base.js
+++ b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file-because-no-rootDir-in-the-base.js
@@ -100,7 +100,7 @@ exports.Other = 0;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n"}],"root":[2],"options":{"composite":true,"declaration":true,"outDir":"./","skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"outDir":"./","skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -113,19 +113,23 @@ exports.Other = 0;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/other/other.ts": {
         "original": {
           "version": "-4254247902-export const Other = 0;\n",
-          "signature": "-10003600206-export declare const Other = 0;\n"
+          "signature": "-10003600206-export declare const Other = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-4254247902-export const Other = 0;\n",
-        "signature": "-10003600206-export declare const Other = 0;\n"
+        "signature": "-10003600206-export declare const Other = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,6 +152,6 @@ exports.Other = 0;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 896
+  "size": 932
 }
 
diff --git a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file.js b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file.js
index d98a5042dd1fa..237677d7499a9 100644
--- a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file.js
+++ b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-error-for-same-tsbuildinfo-file.js
@@ -106,7 +106,7 @@ exports.Other = 0;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -119,19 +119,23 @@ exports.Other = 0;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/other/other.ts": {
         "original": {
           "version": "-4254247902-export const Other = 0;\n",
-          "signature": "-10003600206-export declare const Other = 0;\n"
+          "signature": "-10003600206-export declare const Other = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-4254247902-export const Other = 0;\n",
-        "signature": "-10003600206-export declare const Other = 0;\n"
+        "signature": "-10003600206-export declare const Other = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -152,6 +156,6 @@ exports.Other = 0;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 850
+  "size": 886
 }
 
diff --git a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-no-error-when-tsbuildinfo-differ.js b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-no-error-when-tsbuildinfo-differ.js
index cf3eb521f2f82..abbcacc7733ae 100644
--- a/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-no-error-when-tsbuildinfo-differ.js
+++ b/tests/baselines/reference/tsbuild/projectReferenceWithRootDirInParent/reports-no-error-when-tsbuildinfo-differ.js
@@ -116,7 +116,7 @@ exports.Other = 0;
 
 
 //// [/src/dist/tsconfig.main.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/main/b.ts","../src/main/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-13368948254-export const b = 0;\n","signature":"-5842658702-export declare const b = 0;\n"},{"version":"-18592354388-import { b } from './b';\nconst a = b;\n","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/main/b.ts","../src/main/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13368948254-export const b = 0;\n","signature":"-5842658702-export declare const b = 0;\n","impliedFormat":1},{"version":"-18592354388-import { b } from './b';\nconst a = b;\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.main.tsbuildinfo.readable.baseline.txt]
 {
@@ -135,27 +135,33 @@ exports.Other = 0;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/main/b.ts": {
         "original": {
           "version": "-13368948254-export const b = 0;\n",
-          "signature": "-5842658702-export declare const b = 0;\n"
+          "signature": "-5842658702-export declare const b = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-13368948254-export const b = 0;\n",
-        "signature": "-5842658702-export declare const b = 0;\n"
+        "signature": "-5842658702-export declare const b = 0;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main/a.ts": {
         "original": {
           "version": "-18592354388-import { b } from './b';\nconst a = b;\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-18592354388-import { b } from './b';\nconst a = b;\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -185,11 +191,11 @@ exports.Other = 0;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 988
+  "size": 1042
 }
 
 //// [/src/dist/tsconfig.other.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/other/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4254247902-export const Other = 0;\n","signature":"-10003600206-export declare const Other = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.other.tsbuildinfo.readable.baseline.txt]
 {
@@ -202,19 +208,23 @@ exports.Other = 0;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/other/other.ts": {
         "original": {
           "version": "-4254247902-export const Other = 0;\n",
-          "signature": "-10003600206-export declare const Other = 0;\n"
+          "signature": "-10003600206-export declare const Other = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-4254247902-export const Other = 0;\n",
-        "signature": "-10003600206-export declare const Other = 0;\n"
+        "signature": "-10003600206-export declare const Other = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -235,6 +245,6 @@ exports.Other = 0;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 850
+  "size": 886
 }
 
diff --git a/tests/baselines/reference/tsbuild/publicAPI/build-with-custom-transformers.js b/tests/baselines/reference/tsbuild/publicAPI/build-with-custom-transformers.js
index 4f2c972b79140..131fd08e34009 100644
--- a/tests/baselines/reference/tsbuild/publicAPI/build-with-custom-transformers.js
+++ b/tests/baselines/reference/tsbuild/publicAPI/build-with-custom-transformers.js
@@ -153,7 +153,7 @@ function f2() { } // trailing
 
 
 //// [/src/shared/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing"],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-9393727241-export declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-9393727241-export declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/shared/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -166,15 +166,22 @@ function f2() { } // trailing
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
+          "impliedFormat": 1
+        },
         "version": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
-        "signature": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing"
+        "signature": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -200,7 +207,7 @@ function f2() { } // trailing
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1008
+  "size": 1056
 }
 
 //// [/src/webpack/index.d.ts]
@@ -237,7 +244,7 @@ function f22() { } // trailing
 
 
 //// [/src/webpack/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing"],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-2037002130-export declare function f2(): void;\nexport declare class c2 {\n}\nexport declare enum e2 {\n}\nexport declare function f22(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-2037002130-export declare function f2(): void;\nexport declare class c2 {\n}\nexport declare enum e2 {\n}\nexport declare function f22(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/webpack/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -250,15 +257,22 @@ function f22() { } // trailing
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing",
+          "impliedFormat": 1
+        },
         "version": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing",
-        "signature": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing"
+        "signature": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -284,6 +298,6 @@ function f22() { } // trailing
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1015
+  "size": 1063
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/files-containing-json-file.js b/tests/baselines/reference/tsbuild/resolveJsonModule/files-containing-json-file.js
index d783d0644f04f..d6cbd1296ac72 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/files-containing-json-file.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/files-containing-json-file.js
@@ -90,7 +90,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -109,11 +109,13 @@ exports.default = hello_json_1.default.hello;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -122,10 +124,12 @@ exports.default = hello_json_1.default.hello;
       "../src/index.ts": {
         "original": {
           "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -159,6 +163,6 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1099
+  "size": 1135
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/importing-json-module-from-project-reference.js b/tests/baselines/reference/tsbuild/resolveJsonModule/importing-json-module-from-project-reference.js
index 0f0bfbadea692..1ee03b11fd1b3 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/importing-json-module-from-project-reference.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/importing-json-module-from-project-reference.js
@@ -111,7 +111,7 @@ console.log(foo_json_1.foo);
 
 
 //// [/src/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../strings/foo.json","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-6280880055-{\n  \"foo\": \"bar baz\"\n}",{"version":"-6647471184-import { foo } from '../strings/foo.json';\nconsole.log(foo);\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"esModuleInterop":true,"module":1,"rootDir":"..","strict":true,"target":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../strings/foo.json","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"-6280880055-{\n  \"foo\": \"bar baz\"\n}",{"version":"-6647471184-import { foo } from '../strings/foo.json';\nconsole.log(foo);\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"esModuleInterop":true,"module":1,"rootDir":"..","strict":true,"target":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -130,11 +130,13 @@ console.log(foo_json_1.foo);
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../strings/foo.json": {
         "version": "-6280880055-{\n  \"foo\": \"bar baz\"\n}",
@@ -143,10 +145,12 @@ console.log(foo_json_1.foo);
       "./index.ts": {
         "original": {
           "version": "-6647471184-import { foo } from '../strings/foo.json';\nconsole.log(foo);\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-6647471184-import { foo } from '../strings/foo.json';\nconsole.log(foo);\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -176,11 +180,11 @@ console.log(foo_json_1.foo);
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1007
+  "size": 1043
 }
 
 //// [/src/strings/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./foo.json"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-6280880055-{\n  \"foo\": \"bar baz\"\n}"],"root":[2],"options":{"composite":true,"esModuleInterop":true,"module":1,"rootDir":"..","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./foo.json"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"-6280880055-{\n  \"foo\": \"bar baz\"\n}"],"root":[2],"options":{"composite":true,"esModuleInterop":true,"module":1,"rootDir":"..","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/strings/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -193,11 +197,13 @@ console.log(foo_json_1.foo);
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./foo.json": {
         "version": "-6280880055-{\n  \"foo\": \"bar baz\"\n}",
@@ -225,7 +231,7 @@ console.log(foo_json_1.foo);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 791
+  "size": 809
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-and-files.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-and-files.js
index d9793927908e7..db90ec2a7a5d0 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-and-files.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-and-files.js
@@ -92,7 +92,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -111,11 +111,13 @@ exports.default = hello_json_1.default.hello;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -124,10 +126,12 @@ exports.default = hello_json_1.default.hello;
       "../src/index.ts": {
         "original": {
           "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -161,6 +165,6 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1099
+  "size": 1135
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include-and-file-name-matches-ts-file.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include-and-file-name-matches-ts-file.js
index 5751449846251..fe7bd81531129 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include-and-file-name-matches-ts-file.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include-and-file-name-matches-ts-file.js
@@ -90,7 +90,7 @@ exports.default = index_json_1.default.hello;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/index.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-19435552038-import hello from \"./index.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/index.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-19435552038-import hello from \"./index.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -109,11 +109,13 @@ exports.default = index_json_1.default.hello;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/index.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -122,10 +124,12 @@ exports.default = index_json_1.default.hello;
       "../src/index.ts": {
         "original": {
           "version": "-19435552038-import hello from \"./index.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-19435552038-import hello from \"./index.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -159,6 +163,6 @@ exports.default = index_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1100
+  "size": 1136
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include.js
index bf4de23f4c471..f226aa6096c48 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-of-json-along-with-other-include.js
@@ -90,7 +90,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -109,11 +109,13 @@ exports.default = hello_json_1.default.hello;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -122,10 +124,12 @@ exports.default = hello_json_1.default.hello;
       "../src/index.ts": {
         "original": {
           "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -159,6 +163,6 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1099
+  "size": 1135
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-not-in-rootDir.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-not-in-rootDir.js
index 334b111476564..18b440eafe1a2 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-not-in-rootDir.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-not-in-rootDir.js
@@ -82,7 +82,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./hello.json","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-17927595516-import hello from \"../hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./dist","rootDir":"./src","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./dist/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./hello.json","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-17927595516-import hello from \"../hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./dist","rootDir":"./src","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./dist/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,11 +101,13 @@ exports.default = hello_json_1.default.hello;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -114,10 +116,12 @@ exports.default = hello_json_1.default.hello;
       "./src/index.ts": {
         "original": {
           "version": "-17927595516-import hello from \"../hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-17927595516-import hello from \"../hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,6 +152,6 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./dist/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1113
+  "size": 1149
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-without-rootDir-but-outside-configDirectory.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-without-rootDir-but-outside-configDirectory.js
index 2600f9a6e7c7a..525e65c524148 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-without-rootDir-but-outside-configDirectory.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-with-json-without-rootDir-but-outside-configDirectory.js
@@ -81,7 +81,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../../hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-19695506097-import hello from \"../../hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[2,1,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../../hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-19695506097-import hello from \"../../hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[2,1,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -100,11 +100,13 @@ exports.default = hello_json_1.default.hello;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -113,10 +115,12 @@ exports.default = hello_json_1.default.hello;
       "../src/index.ts": {
         "original": {
           "version": "-19695506097-import hello from \"../../hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-19695506097-import hello from \"../../hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -146,6 +150,6 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1101
+  "size": 1137
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-without-outDir.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-without-outDir.js
index 485eec8a8c5d5..0fdc8392a6ff1 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-without-outDir.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only-without-outDir.js
@@ -80,7 +80,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/hello.json","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/hello.json","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,11 +99,13 @@ exports.default = hello_json_1.default.hello;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -112,10 +114,12 @@ exports.default = hello_json_1.default.hello;
       "./src/index.ts": {
         "original": {
           "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -144,6 +148,6 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1078
+  "size": 1114
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only.js b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only.js
index a640711461146..313cf20a625a5 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/include-only.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/include-only.js
@@ -72,7 +72,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}","-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n"],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","impliedFormat":1}],"root":[3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[3]},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -91,19 +91,26 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
         "signature": "6651571919-{\n  \"hello\": \"world\"\n}"
       },
       "../src/index.ts": {
+        "original": {
+          "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
+          "impliedFormat": 1
+        },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n"
+        "signature": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -145,6 +152,6 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1012
+  "size": 1060
 }
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/sourcemap.js b/tests/baselines/reference/tsbuild/resolveJsonModule/sourcemap.js
index c6b9461300ce1..7e8b3ea402313 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/sourcemap.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/sourcemap.js
@@ -95,7 +95,7 @@ exports.default = hello_json_1.default.hello;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/index.ts"],"names":[],"mappings":";;;;;AAAA,4DAAgC;AAChC,kBAAe,oBAAK,CAAC,KAAK,CAAA"}
 
 //// [/src/dist/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/hello.json","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"outDir":"./","skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/dist/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -114,11 +114,13 @@ exports.default = hello_json_1.default.hello;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -127,10 +129,12 @@ exports.default = hello_json_1.default.hello;
       "../src/index.ts": {
         "original": {
           "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -165,7 +169,7 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1116
+  "size": 1152
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/resolveJsonModule/without-outDir.js b/tests/baselines/reference/tsbuild/resolveJsonModule/without-outDir.js
index 7e62b40a1c3c6..de5c0ef0e4522 100644
--- a/tests/baselines/reference/tsbuild/resolveJsonModule/without-outDir.js
+++ b/tests/baselines/reference/tsbuild/resolveJsonModule/without-outDir.js
@@ -82,7 +82,7 @@ exports.default = hello_json_1.default.hello;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./src/hello.json","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./src/hello.json","./src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},"6651571919-{\n  \"hello\": \"world\"\n}",{"version":"-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n","signature":"6785192742-declare const _default: string;\nexport default _default;\n","impliedFormat":1}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"esModuleInterop":true,"module":1,"skipDefaultLibCheck":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./src/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,11 +101,13 @@ exports.default = hello_json_1.default.hello;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/hello.json": {
         "version": "6651571919-{\n  \"hello\": \"world\"\n}",
@@ -114,10 +116,12 @@ exports.default = hello_json_1.default.hello;
       "./src/index.ts": {
         "original": {
           "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-          "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+          "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-6443385642-import hello from \"./hello.json\"\nexport default hello.hello\n",
-        "signature": "6785192742-declare const _default: string;\nexport default _default;\n"
+        "signature": "6785192742-declare const _default: string;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -150,7 +154,7 @@ exports.default = hello_json_1.default.hello;
     "latestChangedDtsFile": "./src/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1080
+  "size": 1116
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/roots/when-consecutive-and-non-consecutive-are-mixed.js b/tests/baselines/reference/tsbuild/roots/when-consecutive-and-non-consecutive-are-mixed.js
index 57058e144ade9..7dca98e099638 100644
--- a/tests/baselines/reference/tsbuild/roots/when-consecutive-and-non-consecutive-are-mixed.js
+++ b/tests/baselines/reference/tsbuild/roots/when-consecutive-and-non-consecutive-are-mixed.js
@@ -156,7 +156,7 @@ exports.nonConsecutive = "hello";
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./file2.ts","./random.d.ts","./nonconsecutive.ts","./random1.d.ts","./asarray1.ts","./asarray2.ts","./asarray3.ts","./random2.d.ts","./anothernonconsecutive.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"},"-10812219521-export const random = \"hello\";",{"version":"-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n"},"-10812219521-export const random = \"hello\";",{"version":"-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},"-10812219521-export const random = \"hello\";",{"version":"-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n"}],"root":[2,3,5,[7,9],11],"options":{"composite":true},"fileIdsList":[[10],[6],[4]],"referencedMap":[[11,1],[7,2],[5,3]],"semanticDiagnosticsPerFile":[1,11,7,8,9,2,3,5,4,6,10],"latestChangedDtsFile":"./anotherNonConsecutive.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./file2.ts","./random.d.ts","./nonconsecutive.ts","./random1.d.ts","./asarray1.ts","./asarray2.ts","./asarray3.ts","./random2.d.ts","./anothernonconsecutive.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1},{"version":"-10812219521-export const random = \"hello\";","impliedFormat":1},{"version":"-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n","impliedFormat":1},{"version":"-10812219521-export const random = \"hello\";","impliedFormat":1},{"version":"-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-10812219521-export const random = \"hello\";","impliedFormat":1},{"version":"-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n","impliedFormat":1}],"root":[2,3,5,[7,9],11],"options":{"composite":true},"fileIdsList":[[10],[6],[4]],"referencedMap":[[11,1],[7,2],[5,3]],"semanticDiagnosticsPerFile":[1,11,7,8,9,2,3,5,4,6,10],"latestChangedDtsFile":"./anotherNonConsecutive.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -189,79 +189,110 @@ exports.nonConsecutive = "hello";
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random.d.ts": {
+        "original": {
+          "version": "-10812219521-export const random = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10812219521-export const random = \"hello\";",
-        "signature": "-10812219521-export const random = \"hello\";"
+        "signature": "-10812219521-export const random = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./nonconsecutive.ts": {
         "original": {
           "version": "-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n",
-          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n",
-        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random1.d.ts": {
+        "original": {
+          "version": "-10812219521-export const random = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10812219521-export const random = \"hello\";",
-        "signature": "-10812219521-export const random = \"hello\";"
+        "signature": "-10812219521-export const random = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./asarray1.ts": {
         "original": {
           "version": "-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./asarray2.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./asarray3.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random2.d.ts": {
+        "original": {
+          "version": "-10812219521-export const random = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10812219521-export const random = \"hello\";",
-        "signature": "-10812219521-export const random = \"hello\";"
+        "signature": "-10812219521-export const random = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./anothernonconsecutive.ts": {
         "original": {
           "version": "-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n",
-          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n",
-        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -323,7 +354,7 @@ exports.nonConsecutive = "hello";
     "latestChangedDtsFile": "./anotherNonConsecutive.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2117
+  "size": 2351
 }
 
 
@@ -348,7 +379,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file2.ts","./random.d.ts","./nonconsecutive.ts","./random1.d.ts","./asarray1.ts","./asarray2.ts","./asarray3.ts","./random2.d.ts","./anothernonconsecutive.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"},"-10812219521-export const random = \"hello\";",{"version":"-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n"},"-10812219521-export const random = \"hello\";",{"version":"-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},"-10812219521-export const random = \"hello\";",{"version":"-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n"}],"root":[2,4,[6,8],10],"options":{"composite":true},"fileIdsList":[[9],[5],[3]],"referencedMap":[[10,1],[6,2],[4,3]],"semanticDiagnosticsPerFile":[1,10,6,7,8,2,4,3,5,9],"latestChangedDtsFile":"./anotherNonConsecutive.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file2.ts","./random.d.ts","./nonconsecutive.ts","./random1.d.ts","./asarray1.ts","./asarray2.ts","./asarray3.ts","./random2.d.ts","./anothernonconsecutive.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1},{"version":"-10812219521-export const random = \"hello\";","impliedFormat":1},{"version":"-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n","impliedFormat":1},{"version":"-10812219521-export const random = \"hello\";","impliedFormat":1},{"version":"-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-10812219521-export const random = \"hello\";","impliedFormat":1},{"version":"-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n","signature":"-7909998901-export declare const nonConsecutive = \"hello\";\n","impliedFormat":1}],"root":[2,4,[6,8],10],"options":{"composite":true},"fileIdsList":[[9],[5],[3]],"referencedMap":[[10,1],[6,2],[4,3]],"semanticDiagnosticsPerFile":[1,10,6,7,8,2,4,3,5,9],"latestChangedDtsFile":"./anotherNonConsecutive.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -380,71 +411,100 @@ exitCode:: ExitStatus.Success
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random.d.ts": {
+        "original": {
+          "version": "-10812219521-export const random = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10812219521-export const random = \"hello\";",
-        "signature": "-10812219521-export const random = \"hello\";"
+        "signature": "-10812219521-export const random = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./nonconsecutive.ts": {
         "original": {
           "version": "-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n",
-          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-4807644630-import { random } from \"./random\";\nexport const nonConsecutive = \"hello\";\n",
-        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random1.d.ts": {
+        "original": {
+          "version": "-10812219521-export const random = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10812219521-export const random = \"hello\";",
-        "signature": "-10812219521-export const random = \"hello\";"
+        "signature": "-10812219521-export const random = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./asarray1.ts": {
         "original": {
           "version": "-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-21033449408-import { random } from \"./random1\";\nexport const x = \"hello\";\n",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./asarray2.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./asarray3.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random2.d.ts": {
+        "original": {
+          "version": "-10812219521-export const random = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10812219521-export const random = \"hello\";",
-        "signature": "-10812219521-export const random = \"hello\";"
+        "signature": "-10812219521-export const random = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./anothernonconsecutive.ts": {
         "original": {
           "version": "-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n",
-          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+          "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-23429155204-import { random } from \"./random2\";\nexport const nonConsecutive = \"hello\";\n",
-        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n"
+        "signature": "-7909998901-export declare const nonConsecutive = \"hello\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -501,6 +561,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./anotherNonConsecutive.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1979
+  "size": 2195
 }
 
diff --git a/tests/baselines/reference/tsbuild/roots/when-files-are-not-consecutive.js b/tests/baselines/reference/tsbuild/roots/when-files-are-not-consecutive.js
index 62539412a7671..0fdb0c84a01e8 100644
--- a/tests/baselines/reference/tsbuild/roots/when-files-are-not-consecutive.js
+++ b/tests/baselines/reference/tsbuild/roots/when-files-are-not-consecutive.js
@@ -73,7 +73,7 @@ exports.y = "world";
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./random.d.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},"-12516578989-export const random = \"world\";",{"version":"-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n","signature":"-5502661211-export declare const y = \"world\";\n"}],"root":[2,4],"options":{"composite":true},"fileIdsList":[[3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./random.d.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-12516578989-export const random = \"world\";","impliedFormat":1},{"version":"-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1}],"root":[2,4],"options":{"composite":true},"fileIdsList":[[3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,31 +93,42 @@ exports.y = "world";
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./random.d.ts": {
+        "original": {
+          "version": "-12516578989-export const random = \"world\";",
+          "impliedFormat": 1
+        },
         "version": "-12516578989-export const random = \"world\";",
-        "signature": "-12516578989-export const random = \"world\";"
+        "signature": "-12516578989-export const random = \"world\";",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -147,7 +158,7 @@ exports.y = "world";
     "latestChangedDtsFile": "./file2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1095
+  "size": 1179
 }
 
 
@@ -172,7 +183,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./random.d.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-12516578989-export const random = \"world\";",{"version":"-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n","signature":"-5502661211-export declare const y = \"world\";\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./random.d.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12516578989-export const random = \"world\";","impliedFormat":1},{"version":"-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -191,23 +202,32 @@ exitCode:: ExitStatus.Success
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./random.d.ts": {
+        "original": {
+          "version": "-12516578989-export const random = \"world\";",
+          "impliedFormat": 1
+        },
         "version": "-12516578989-export const random = \"world\";",
-        "signature": "-12516578989-export const random = \"world\";"
+        "signature": "-12516578989-export const random = \"world\";",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-12123221340-import { random } from \"./random\";\nexport const y = \"world\";\n",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -232,6 +252,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./file2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 959
+  "size": 1025
 }
 
diff --git a/tests/baselines/reference/tsbuild/roots/when-multiple-root-files-are-consecutive.js b/tests/baselines/reference/tsbuild/roots/when-multiple-root-files-are-consecutive.js
index ab71bc4c7a34e..5ea5372a44ac8 100644
--- a/tests/baselines/reference/tsbuild/roots/when-multiple-root-files-are-consecutive.js
+++ b/tests/baselines/reference/tsbuild/roots/when-multiple-root-files-are-consecutive.js
@@ -96,7 +96,7 @@ exports.y = "world";
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./file2.ts","./file3.ts","./file4.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"}],"root":[[2,5]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./file4.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./file2.ts","./file3.ts","./file4.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./file4.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -112,43 +112,53 @@ exports.y = "world";
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file3.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file4.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -179,7 +189,7 @@ exports.y = "world";
     "latestChangedDtsFile": "./file4.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1234
+  "size": 1324
 }
 
 
@@ -204,7 +214,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file2.ts","./file3.ts","./file4.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"}],"root":[[2,4]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./file4.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file2.ts","./file3.ts","./file4.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./file4.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,35 +229,43 @@ exitCode:: ExitStatus.Success
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file3.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file4.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -276,6 +294,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./file4.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1100
+  "size": 1172
 }
 
diff --git a/tests/baselines/reference/tsbuild/roots/when-two-root-files-are-consecutive.js b/tests/baselines/reference/tsbuild/roots/when-two-root-files-are-consecutive.js
index 6b10885c50293..6a005de25657a 100644
--- a/tests/baselines/reference/tsbuild/roots/when-two-root-files-are-consecutive.js
+++ b/tests/baselines/reference/tsbuild/roots/when-two-root-files-are-consecutive.js
@@ -68,7 +68,7 @@ exports.y = "world";
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n"},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10637577098-export const x = \"hello\";","signature":"-6425002032-export declare const x = \"hello\";\n","impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -82,27 +82,33 @@ exports.y = "world";
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "-10637577098-export const x = \"hello\";",
-          "signature": "-6425002032-export declare const x = \"hello\";\n"
+          "signature": "-6425002032-export declare const x = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-10637577098-export const x = \"hello\";",
-        "signature": "-6425002032-export declare const x = \"hello\";\n"
+        "signature": "-6425002032-export declare const x = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +133,7 @@ exports.y = "world";
     "latestChangedDtsFile": "./file2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 964
+  "size": 1018
 }
 
 
@@ -152,7 +158,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11520681045-export const y = \"world\";","signature":"-5502661211-export declare const y = \"world\";\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -165,19 +171,23 @@ exitCode:: ExitStatus.Success
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11520681045-export const y = \"world\";",
-          "signature": "-5502661211-export declare const y = \"world\";\n"
+          "signature": "-5502661211-export declare const y = \"world\";\n",
+          "impliedFormat": 1
         },
         "version": "-11520681045-export const y = \"world\";",
-        "signature": "-5502661211-export declare const y = \"world\";\n"
+        "signature": "-5502661211-export declare const y = \"world\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -197,6 +207,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./file2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 828
+  "size": 864
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/always-builds-under-with-force-option.js b/tests/baselines/reference/tsbuild/sample1/always-builds-under-with-force-option.js
index af654b1ed89f3..af0dde4c27fda 100644
--- a/tests/baselines/reference/tsbuild/sample1/always-builds-under-with-force-option.js
+++ b/tests/baselines/reference/tsbuild/sample1/always-builds-under-with-force-option.js
@@ -136,7 +136,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -151,36 +151,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -212,7 +220,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -238,7 +246,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,27 +267,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -309,7 +331,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -330,7 +352,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -356,31 +378,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -414,7 +455,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/building-using-buildReferencedProject.js b/tests/baselines/reference/tsbuild/sample1/building-using-buildReferencedProject.js
index e8c441b66f743..597a08d20659a 100644
--- a/tests/baselines/reference/tsbuild/sample1/building-using-buildReferencedProject.js
+++ b/tests/baselines/reference/tsbuild/sample1/building-using-buildReferencedProject.js
@@ -147,7 +147,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -162,36 +162,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +231,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -249,7 +257,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -270,27 +278,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -320,6 +342,6 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/building-using-getNextInvalidatedProject.js b/tests/baselines/reference/tsbuild/sample1/building-using-getNextInvalidatedProject.js
index 091e8e9dd5881..a13b93431c7c7 100644
--- a/tests/baselines/reference/tsbuild/sample1/building-using-getNextInvalidatedProject.js
+++ b/tests/baselines/reference/tsbuild/sample1/building-using-getNextInvalidatedProject.js
@@ -131,7 +131,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -146,36 +146,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -207,7 +215,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 
@@ -238,7 +246,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,27 +267,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -309,7 +331,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 
@@ -335,7 +357,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -361,31 +383,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -419,7 +460,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-declarationDir-is-specified.js b/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-declarationDir-is-specified.js
index 08545f4840575..904045e53964c 100644
--- a/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-declarationDir-is-specified.js
+++ b/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-declarationDir-is-specified.js
@@ -135,7 +135,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,36 +150,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -211,7 +219,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.js]
@@ -237,7 +245,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"declarationDir":"./out/decls","sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./out/decls/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationDir":"./out/decls","sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./out/decls/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -258,27 +266,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -308,7 +330,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./out/decls/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1492
+  "size": 1588
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -329,7 +351,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/out/decls/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/out/decls/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -355,31 +377,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/out/decls/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -413,6 +454,6 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1628
+  "size": 1754
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-outDir-is-specified.js b/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-outDir-is-specified.js
index d97e8ff89d881..ed5063e51d1f6 100644
--- a/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-outDir-is-specified.js
+++ b/tests/baselines/reference/tsbuild/sample1/builds-correctly-when-outDir-is-specified.js
@@ -135,7 +135,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,36 +150,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -211,7 +219,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/outDir/index.d.ts]
@@ -237,7 +245,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["../index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/index.d.ts","../../core/anothermodule.d.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"outDir":"./","sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/index.d.ts","../../core/anothermodule.d.ts","../index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"outDir":"./","sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -258,27 +266,41 @@ exports.m = mod;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -308,7 +330,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1475
+  "size": 1571
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -329,7 +351,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/outdir/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/outdir/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -355,31 +377,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/outdir/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -413,6 +454,6 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1625
+  "size": 1751
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/builds-till-project-specified.js b/tests/baselines/reference/tsbuild/sample1/builds-till-project-specified.js
index e25b6f00cf48a..41c1001498c8a 100644
--- a/tests/baselines/reference/tsbuild/sample1/builds-till-project-specified.js
+++ b/tests/baselines/reference/tsbuild/sample1/builds-till-project-specified.js
@@ -135,7 +135,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,36 +150,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -211,7 +219,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -237,7 +245,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -258,27 +266,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -308,6 +330,6 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/can-detect-when-and-what-to-rebuild.js b/tests/baselines/reference/tsbuild/sample1/can-detect-when-and-what-to-rebuild.js
index 2cfd826c6c969..91e51567e2b2e 100644
--- a/tests/baselines/reference/tsbuild/sample1/can-detect-when-and-what-to-rebuild.js
+++ b/tests/baselines/reference/tsbuild/sample1/can-detect-when-and-what-to-rebuild.js
@@ -72,7 +72,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -87,36 +87,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,7 +156,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -199,7 +207,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -220,27 +228,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -270,7 +292,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -323,7 +345,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,31 +371,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -407,7 +448,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -464,7 +505,7 @@ var m = 10;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"3708260210-const m = 10;","signature":"-357908916-declare const m = 10;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"3708260210-const m = 10;","signature":"-357908916-declare const m = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -477,21 +518,25 @@ var m = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "3708260210-const m = 10;",
           "signature": "-357908916-declare const m = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3708260210-const m = 10;",
         "signature": "-357908916-declare const m = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -513,7 +558,7 @@ var m = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 883
+  "size": 919
 }
 
 
@@ -565,7 +610,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-17153345957-export const someString: string = \"WELCOME PLANET\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-17153345957-export const someString: string = \"WELCOME PLANET\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -580,36 +625,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-17153345957-export const someString: string = \"WELCOME PLANET\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-17153345957-export const someString: string = \"WELCOME PLANET\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -641,7 +694,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1453
+  "size": 1525
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
@@ -711,7 +764,7 @@ const m = 10;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.es2020.full.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"3708260210-const m = 10;","signature":"-357908916-declare const m = 10;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"target":7},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.es2020.full.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"3708260210-const m = 10;","signature":"-357908916-declare const m = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"target":7},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -724,21 +777,25 @@ const m = 10;
       "../../../../../a/lib/lib.es2020.full.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "3708260210-const m = 10;",
           "signature": "-357908916-declare const m = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3708260210-const m = 10;",
         "signature": "-357908916-declare const m = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -761,6 +818,6 @@ const m = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 906
+  "size": 942
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/cleaning-project-in-not-build-order-doesnt-throw-error.js b/tests/baselines/reference/tsbuild/sample1/cleaning-project-in-not-build-order-doesnt-throw-error.js
index d5a8fbb3babc0..e6e00f03eb83a 100644
--- a/tests/baselines/reference/tsbuild/sample1/cleaning-project-in-not-build-order-doesnt-throw-error.js
+++ b/tests/baselines/reference/tsbuild/sample1/cleaning-project-in-not-build-order-doesnt-throw-error.js
@@ -71,7 +71,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -86,36 +86,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -147,7 +155,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -198,7 +206,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,27 +227,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -269,7 +291,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -322,7 +344,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -348,31 +370,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -406,7 +447,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/cleans-till-project-specified.js b/tests/baselines/reference/tsbuild/sample1/cleans-till-project-specified.js
index 3192c84f3739f..a7c9bef568fb6 100644
--- a/tests/baselines/reference/tsbuild/sample1/cleans-till-project-specified.js
+++ b/tests/baselines/reference/tsbuild/sample1/cleans-till-project-specified.js
@@ -71,7 +71,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -86,36 +86,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -147,7 +155,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -198,7 +206,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,27 +227,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -269,7 +291,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -322,7 +344,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -348,31 +370,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -406,7 +447,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/does-not-build-downstream-projects-if-upstream-projects-have-errors.js b/tests/baselines/reference/tsbuild/sample1/does-not-build-downstream-projects-if-upstream-projects-have-errors.js
index 283f81909583e..820b0c201d6d2 100644
--- a/tests/baselines/reference/tsbuild/sample1/does-not-build-downstream-projects-if-upstream-projects-have-errors.js
+++ b/tests/baselines/reference/tsbuild/sample1/does-not-build-downstream-projects-if-upstream-projects-have-errors.js
@@ -161,7 +161,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,36 +176,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -237,11 +245,11 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-11192027815-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.muitply();\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n"],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,[4,[{"file":"./index.ts","start":85,"length":7,"code":2339,"category":1,"messageText":"Property 'muitply' does not exist on type 'typeof import(\"/user/username/projects/sample1/core/index\")'."}]]],"affectedFilesPendingEmit":[4],"emitSignatures":[4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-11192027815-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.muitply();\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,[4,[{"file":"./index.ts","start":85,"length":7,"code":2339,"category":1,"messageText":"Property 'muitply' does not exist on type 'typeof import(\"/user/username/projects/sample1/core/index\")'."}]]],"affectedFilesPendingEmit":[4],"emitSignatures":[4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -262,23 +270,40 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "-11192027815-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.muitply();\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-11192027815-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.muitply();\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-11192027815-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.muitply();\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n"
+        "signature": "-11192027815-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.muitply();\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -328,7 +353,7 @@ function multiply(a, b) { return a * b; }
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1507
+  "size": 1615
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/explainFiles.js b/tests/baselines/reference/tsbuild/sample1/explainFiles.js
index e14fc51eba184..95082bbfa611d 100644
--- a/tests/baselines/reference/tsbuild/sample1/explainFiles.js
+++ b/tests/baselines/reference/tsbuild/sample1/explainFiles.js
@@ -185,7 +185,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -200,36 +200,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -261,7 +269,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -287,7 +295,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -308,27 +316,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -358,7 +380,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -379,7 +401,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -405,31 +427,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -463,7 +504,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -562,7 +603,7 @@ exports.someClass = someClass;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -577,36 +618,44 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -638,13 +687,13 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1587
 }
 
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -665,27 +714,41 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -715,12 +778,12 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1611
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -746,31 +809,50 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -804,7 +886,7 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1655
+  "size": 1781
 }
 
 
@@ -875,7 +957,7 @@ var someClass2 = /** @class */ (function () {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -890,36 +972,44 @@ var someClass2 = /** @class */ (function () {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -951,7 +1041,7 @@ var someClass2 = /** @class */ (function () {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1537
+  "size": 1609
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/sample1/indicates-that-it-would-skip-builds-during-a-dry-build.js b/tests/baselines/reference/tsbuild/sample1/indicates-that-it-would-skip-builds-during-a-dry-build.js
index e468712086c29..d43bdb977ba3a 100644
--- a/tests/baselines/reference/tsbuild/sample1/indicates-that-it-would-skip-builds-during-a-dry-build.js
+++ b/tests/baselines/reference/tsbuild/sample1/indicates-that-it-would-skip-builds-during-a-dry-build.js
@@ -72,7 +72,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -87,36 +87,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,7 +156,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -199,7 +207,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -220,27 +228,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -270,7 +292,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -323,7 +345,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,31 +371,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -407,7 +448,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/invalidates-projects-correctly.js b/tests/baselines/reference/tsbuild/sample1/invalidates-projects-correctly.js
index dee2836924c6d..55660ff8472c0 100644
--- a/tests/baselines/reference/tsbuild/sample1/invalidates-projects-correctly.js
+++ b/tests/baselines/reference/tsbuild/sample1/invalidates-projects-correctly.js
@@ -126,7 +126,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -141,36 +141,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -202,7 +210,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -228,7 +236,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -249,27 +257,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -299,7 +321,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -320,7 +342,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -346,31 +368,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -404,7 +445,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
@@ -437,7 +478,7 @@ function foo() { }
 //# sourceMappingURL=index.js.map
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-6834574773-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-6834574773-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -458,27 +499,41 @@ function foo() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6834574773-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-6834574773-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -508,7 +563,7 @@ function foo() { }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1415
+  "size": 1511
 }
 
 
@@ -557,7 +612,7 @@ export declare class cNew {
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-6419466200-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}export class cNew {}","signature":"-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-6419466200-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}export class cNew {}","signature":"-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -578,27 +633,41 @@ export declare class cNew {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6419466200-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}export class cNew {}",
-          "signature": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n"
+          "signature": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6419466200-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() {}export class cNew {}",
-        "signature": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n"
+        "signature": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -628,14 +697,14 @@ export declare class cNew {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1468
+  "size": 1564
 }
 
 
 Dts change to Logic:: After building next project
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -661,31 +730,50 @@ Dts change to Logic:: After building next project
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n",
-        "signature": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n"
+        "signature": "-10890883855-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare class cNew {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -719,6 +807,6 @@ Dts change to Logic:: After building next project
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1571
+  "size": 1697
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/listEmittedFiles.js b/tests/baselines/reference/tsbuild/sample1/listEmittedFiles.js
index f2c7ced988b8f..f765f1750fed5 100644
--- a/tests/baselines/reference/tsbuild/sample1/listEmittedFiles.js
+++ b/tests/baselines/reference/tsbuild/sample1/listEmittedFiles.js
@@ -150,7 +150,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -165,36 +165,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -226,7 +234,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -252,7 +260,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -273,27 +281,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -323,7 +345,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -344,7 +366,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -370,31 +392,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -428,7 +469,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -487,7 +528,7 @@ exports.someClass = someClass;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -502,36 +543,44 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -563,13 +612,13 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1587
 }
 
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -590,27 +639,41 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -640,12 +703,12 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1611
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -671,31 +734,50 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -729,7 +811,7 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1655
+  "size": 1781
 }
 
 
@@ -778,7 +860,7 @@ var someClass2 = /** @class */ (function () {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -793,36 +875,44 @@ var someClass2 = /** @class */ (function () {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -854,7 +944,7 @@ var someClass2 = /** @class */ (function () {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1537
+  "size": 1609
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/sample1/listFiles.js b/tests/baselines/reference/tsbuild/sample1/listFiles.js
index ca048dc9f5ab3..7fc0eb17c17be 100644
--- a/tests/baselines/reference/tsbuild/sample1/listFiles.js
+++ b/tests/baselines/reference/tsbuild/sample1/listFiles.js
@@ -149,7 +149,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -164,36 +164,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -225,7 +233,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -251,7 +259,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -272,27 +280,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -322,7 +344,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -343,7 +365,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -369,31 +391,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -427,7 +468,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -490,7 +531,7 @@ exports.someClass = someClass;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -505,36 +546,44 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -566,13 +615,13 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1587
 }
 
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -593,27 +642,41 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -643,12 +706,12 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1611
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -674,31 +737,50 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -732,7 +814,7 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1655
+  "size": 1781
 }
 
 
@@ -782,7 +864,7 @@ var someClass2 = /** @class */ (function () {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -797,36 +879,44 @@ var someClass2 = /** @class */ (function () {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -858,7 +948,7 @@ var someClass2 = /** @class */ (function () {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1537
+  "size": 1609
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/sample1/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js b/tests/baselines/reference/tsbuild/sample1/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js
index 126b6af244213..bff9704cbe005 100644
--- a/tests/baselines/reference/tsbuild/sample1/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js
+++ b/tests/baselines/reference/tsbuild/sample1/rebuilds-completely-when-version-in-tsbuildinfo-doesnt-match-ts-version.js
@@ -71,7 +71,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -86,36 +86,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -147,7 +155,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -198,7 +206,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,27 +227,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -269,7 +291,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -322,7 +344,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -348,31 +370,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -406,7 +447,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -440,7 +481,7 @@ exitCode:: ExitStatus.Success
 //// [/user/username/projects/sample1/core/index.d.ts.map] file written with same contents
 //// [/user/username/projects/sample1/core/index.js] file written with same contents
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSCurrentVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSCurrentVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -455,36 +496,44 @@ exitCode:: ExitStatus.Success
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -516,14 +565,14 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSCurrentVersion",
-  "size": 1457
+  "size": 1529
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSCurrentVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSCurrentVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -544,27 +593,41 @@ exitCode:: ExitStatus.Success
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -594,13 +657,13 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSCurrentVersion",
-  "size": 1485
+  "size": 1581
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts] file written with same contents
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSCurrentVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSCurrentVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -626,31 +689,50 @@ exitCode:: ExitStatus.Success
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -684,6 +766,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSCurrentVersion",
-  "size": 1625
+  "size": 1751
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/rebuilds-from-start-if-force-option-is-set.js b/tests/baselines/reference/tsbuild/sample1/rebuilds-from-start-if-force-option-is-set.js
index 6088aee9cf0ac..88ec8676240b7 100644
--- a/tests/baselines/reference/tsbuild/sample1/rebuilds-from-start-if-force-option-is-set.js
+++ b/tests/baselines/reference/tsbuild/sample1/rebuilds-from-start-if-force-option-is-set.js
@@ -72,7 +72,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -87,36 +87,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,7 +156,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -199,7 +207,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -220,27 +228,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -270,7 +292,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -323,7 +345,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,31 +371,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -407,7 +448,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/rebuilds-when-extended-config-file-changes.js b/tests/baselines/reference/tsbuild/sample1/rebuilds-when-extended-config-file-changes.js
index fe06de7e9b205..914612670dea4 100644
--- a/tests/baselines/reference/tsbuild/sample1/rebuilds-when-extended-config-file-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/rebuilds-when-extended-config-file-changes.js
@@ -160,7 +160,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -175,36 +175,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -236,7 +244,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -262,7 +270,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -283,27 +291,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -333,7 +355,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -354,7 +376,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"target":1},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"target":1},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -380,31 +402,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -439,7 +480,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1629
+  "size": 1755
 }
 
 
@@ -473,7 +514,7 @@ exitCode:: ExitStatus.Success
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -499,31 +540,50 @@ exitCode:: ExitStatus.Success
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -557,6 +617,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/removes-all-files-it-built.js b/tests/baselines/reference/tsbuild/sample1/removes-all-files-it-built.js
index 049c07100416a..d7c7282bcea17 100644
--- a/tests/baselines/reference/tsbuild/sample1/removes-all-files-it-built.js
+++ b/tests/baselines/reference/tsbuild/sample1/removes-all-files-it-built.js
@@ -72,7 +72,7 @@ declare const dts: any;
 }
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -87,36 +87,44 @@ declare const dts: any;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,7 +156,7 @@ declare const dts: any;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -199,7 +207,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -220,27 +228,41 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -270,7 +292,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -323,7 +345,7 @@ export const m = mod;
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,31 +371,50 @@ export const m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -407,7 +448,7 @@ export const m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing-with-force.js b/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing-with-force.js
index 82d7e79b56023..8c676a898e513 100644
--- a/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing-with-force.js
+++ b/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing-with-force.js
@@ -130,7 +130,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":false},{"version":"-7959511260-declare const dts: any;","signature":false,"affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":false,"impliedFormat":1},{"version":"-7959511260-declare const dts: any;","signature":false,"affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -145,26 +145,32 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -188,6 +194,6 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1036
+  "size": 1090
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing.js b/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing.js
index 93108709375ca..6aa83ccccb175 100644
--- a/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing.js
+++ b/tests/baselines/reference/tsbuild/sample1/reports-error-if-input-file-is-missing.js
@@ -130,7 +130,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":false},{"version":"-7959511260-declare const dts: any;","signature":false,"affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":false,"impliedFormat":1},{"version":"-7959511260-declare const dts: any;","signature":false,"affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -145,26 +145,32 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -188,6 +194,6 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1036
+  "size": 1090
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/sample.js b/tests/baselines/reference/tsbuild/sample1/sample.js
index 0f697e93d090d..20388d09675d5 100644
--- a/tests/baselines/reference/tsbuild/sample1/sample.js
+++ b/tests/baselines/reference/tsbuild/sample1/sample.js
@@ -315,7 +315,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -330,36 +330,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -391,7 +399,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -542,7 +550,7 @@ sourceFile:index.ts
 >>>//# sourceMappingURL=index.js.map
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -563,27 +571,41 @@ sourceFile:index.ts
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -613,7 +635,7 @@ sourceFile:index.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -634,7 +656,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -660,31 +682,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -718,7 +759,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -935,7 +976,7 @@ exports.someClass = someClass;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -950,36 +991,44 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1011,14 +1060,14 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1587
 }
 
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map.baseline.txt] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1039,27 +1088,41 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1089,12 +1152,12 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1515
+  "size": 1611
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1120,31 +1183,50 @@ exports.someClass = someClass;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1178,7 +1260,7 @@ exports.someClass = someClass;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1655
+  "size": 1781
 }
 
 
@@ -1252,7 +1334,7 @@ var someClass2 = /** @class */ (function () {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1267,36 +1349,44 @@ var someClass2 = /** @class */ (function () {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-18382817761-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nclass someClass2 { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1328,7 +1418,7 @@ var someClass2 = /** @class */ (function () {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1537
+  "size": 1609
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
@@ -1427,7 +1517,7 @@ export declare const m: typeof mod;
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js.map.baseline.txt] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"declarationDir":"./decls","skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./decls/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationDir":"./decls","skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./decls/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1448,27 +1538,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1499,12 +1603,12 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./decls/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1548
+  "size": 1644
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/decls/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/decls/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1530,31 +1634,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/decls/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1588,7 +1711,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1661
+  "size": 1787
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/tsbuildinfo-has-error.js b/tests/baselines/reference/tsbuild/sample1/tsbuildinfo-has-error.js
index 241ba5c90642d..cdc70ceaaa906 100644
--- a/tests/baselines/reference/tsbuild/sample1/tsbuildinfo-has-error.js
+++ b/tests/baselines/reference/tsbuild/sample1/tsbuildinfo-has-error.js
@@ -46,7 +46,7 @@ exports.x = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -59,15 +59,22 @@ exports.x = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -83,7 +90,7 @@ exports.x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 680
+  "size": 728
 }
 
 
@@ -91,7 +98,7 @@ exports.x = 10;
 Change:: tsbuildinfo written has error
 Input::
 //// [/src/project/tsconfig.tsbuildinfo]
-Some random string{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+Some random string{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 
 
@@ -109,6 +116,6 @@ exitCode:: ExitStatus.Success
 
 //// [/src/project/main.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt] file written with same contents
diff --git a/tests/baselines/reference/tsbuild/sample1/when-declaration-option-changes.js b/tests/baselines/reference/tsbuild/sample1/when-declaration-option-changes.js
index 99062f9763e39..58d29cf116fff 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-declaration-option-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-declaration-option-changes.js
@@ -125,7 +125,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-3090574810-export const World = \"hello\";","-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -140,28 +140,42 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
+        "original": {
+          "version": "-3090574810-export const World = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-3090574810-export const World = \"hello\";"
+        "signature": "-3090574810-export const World = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+          "impliedFormat": 1
+        },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -189,7 +203,7 @@ function multiply(a, b) { return a * b; }
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1064
+  "size": 1160
 }
 
 
@@ -229,7 +243,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"declaration":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -244,36 +258,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -302,6 +324,6 @@ export declare function multiply(a: number, b: number): number;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1373
+  "size": 1445
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/when-declarationMap-changes.js b/tests/baselines/reference/tsbuild/sample1/when-declarationMap-changes.js
index 8221aaff3e5b3..7fe8bee10f78e 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-declarationMap-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-declarationMap-changes.js
@@ -153,7 +153,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,36 +168,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -229,7 +237,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -255,7 +263,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -276,27 +284,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -326,7 +348,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -347,7 +369,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -373,31 +395,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -431,7 +472,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
@@ -483,7 +524,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":false,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":false,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -498,36 +539,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -559,7 +608,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1451
+  "size": 1523
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
@@ -615,7 +664,7 @@ export declare function multiply(a: number, b: number): number;
 
 //// [/user/username/projects/sample1/core/index.d.ts.map] file written with same contents
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -630,36 +679,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -691,7 +748,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuild/sample1/when-esModuleInterop-option-changes.js b/tests/baselines/reference/tsbuild/sample1/when-esModuleInterop-option-changes.js
index 73263c44ab85d..9a5563748111f 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-esModuleInterop-option-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-esModuleInterop-option-changes.js
@@ -154,7 +154,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -169,36 +169,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -230,7 +238,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -256,7 +264,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -277,27 +285,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -327,7 +349,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -348,7 +370,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"esModuleInterop":false,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"esModuleInterop":false,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -374,31 +396,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -433,7 +474,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1642
+  "size": 1768
 }
 
 
@@ -518,7 +559,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"esModuleInterop":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"esModuleInterop":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -544,31 +585,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -603,6 +663,6 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1641
+  "size": 1767
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/when-input-file-text-does-not-change-but-its-modified-time-changes.js b/tests/baselines/reference/tsbuild/sample1/when-input-file-text-does-not-change-but-its-modified-time-changes.js
index d6b40556f838b..bba7c6f316b8e 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-input-file-text-does-not-change-but-its-modified-time-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-input-file-text-does-not-change-but-its-modified-time-changes.js
@@ -153,7 +153,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,36 +168,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -229,7 +237,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -255,7 +263,7 @@ exports.m = mod;
 {"version":3,"file":"index.js","sourceRoot":"","sources":["index.ts"],"names":[],"mappings":";;;AACA,0CAEC;AAHD,iCAAmC;AACnC,SAAgB,eAAe;IAC3B,OAAO,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,EAAE,CAAC,CAAC;AAC9B,CAAC;AACD,2CAA6C;AAChC,QAAA,CAAC,GAAG,GAAG,CAAC"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -276,27 +284,41 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -326,7 +348,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1478
+  "size": 1574
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -347,7 +369,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -373,31 +395,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -431,7 +472,7 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
 
diff --git a/tests/baselines/reference/tsbuild/sample1/when-logic-specifies-tsBuildInfoFile.js b/tests/baselines/reference/tsbuild/sample1/when-logic-specifies-tsBuildInfoFile.js
index 760bcd602bace..887c1ca10ed28 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-logic-specifies-tsBuildInfoFile.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-logic-specifies-tsBuildInfoFile.js
@@ -316,7 +316,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -331,36 +331,44 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -392,7 +400,7 @@ function multiply(a, b) { return a * b; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1450
+  "size": 1522
 }
 
 //// [/user/username/projects/sample1/logic/index.d.ts]
@@ -543,7 +551,7 @@ sourceFile:index.ts
 >>>//# sourceMappingURL=index.js.map
 
 //// [/user/username/projects/sample1/logic/ownFile.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true,"tsBuildInfoFile":"./ownFile.tsbuildinfo"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true,"tsBuildInfoFile":"./ownFile.tsbuildinfo"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/ownFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -564,27 +572,41 @@ sourceFile:index.ts
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -615,7 +637,7 @@ sourceFile:index.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1520
+  "size": 1616
 }
 
 //// [/user/username/projects/sample1/tests/index.d.ts]
@@ -636,7 +658,7 @@ exports.m = mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -662,31 +684,50 @@ exports.m = mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -720,6 +761,6 @@ exports.m = mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1618
+  "size": 1744
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/when-module-option-changes.js b/tests/baselines/reference/tsbuild/sample1/when-module-option-changes.js
index b63453e28daed..14af9405bf005 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-module-option-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-module-option-changes.js
@@ -125,7 +125,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-3090574810-export const World = \"hello\";","-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -140,28 +140,42 @@ function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
+        "original": {
+          "version": "-3090574810-export const World = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-3090574810-export const World = \"hello\";"
+        "signature": "-3090574810-export const World = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+          "impliedFormat": 1
+        },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -189,7 +203,7 @@ function multiply(a, b) { return a * b; }
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1048
+  "size": 1144
 }
 
 
@@ -241,7 +255,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-3090574810-export const World = \"hello\";","-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -256,28 +270,42 @@ define(["require", "exports"], function (require, exports) {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
+        "original": {
+          "version": "-3090574810-export const World = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-3090574810-export const World = \"hello\";"
+        "signature": "-3090574810-export const World = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+          "impliedFormat": 1
+        },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -305,6 +333,6 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1048
+  "size": 1144
 }
 
diff --git a/tests/baselines/reference/tsbuild/sample1/when-target-option-changes.js b/tests/baselines/reference/tsbuild/sample1/when-target-option-changes.js
index c98b0ec73bd87..faa0a3fe8a606 100644
--- a/tests/baselines/reference/tsbuild/sample1/when-target-option-changes.js
+++ b/tests/baselines/reference/tsbuild/sample1/when-target-option-changes.js
@@ -135,7 +135,7 @@ export function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.esnext.d.ts","../../../../../a/lib/lib.esnext.full.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />","-3090574810-export const World = \"hello\";","-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[3,5]],"options":{"target":99},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.esnext.d.ts","../../../../../a/lib/lib.esnext.full.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />","impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[3,5]],"options":{"target":99},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -151,32 +151,51 @@ export function multiply(a, b) { return a * b; }
       "../../../../../a/lib/lib.esnext.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../../../a/lib/lib.esnext.full.d.ts": {
+        "original": {
+          "version": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",
+          "impliedFormat": 1
+        },
         "version": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",
-        "signature": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />"
+        "signature": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
+        "original": {
+          "version": "-3090574810-export const World = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-3090574810-export const World = \"hello\";"
+        "signature": "-3090574810-export const World = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+          "impliedFormat": 1
+        },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -205,7 +224,7 @@ export function multiply(a, b) { return a * b; }
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1190
+  "size": 1316
 }
 
 
@@ -263,7 +282,7 @@ function multiply(a, b) { return a * b; }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../../../../../a/lib/lib.esnext.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":["8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-3090574810-export const World = \"hello\";","-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[3,5]],"options":{"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../../../../../a/lib/lib.esnext.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />","impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[3,5]],"options":{"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -277,34 +296,53 @@ function multiply(a, b) { return a * b; }
     ],
     "fileInfos": {
       "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",
+          "impliedFormat": 1
+        },
         "version": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",
-        "signature": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />"
+        "signature": "8926001564-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />",
+        "impliedFormat": "commonjs"
       },
       "../../../../../a/lib/lib.esnext.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
+        "original": {
+          "version": "-3090574810-export const World = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-3090574810-export const World = \"hello\";"
+        "signature": "-3090574810-export const World = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+          "impliedFormat": 1
+        },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n"
+        "signature": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -333,6 +371,6 @@ function multiply(a, b) { return a * b; }
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1177
+  "size": 1303
 }
 
diff --git a/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly-when-the-referenced-project-uses-different-module-resolution.js b/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly-when-the-referenced-project-uses-different-module-resolution.js
index 95e11f3096e79..f60ca70705f57 100644
--- a/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly-when-the-referenced-project-uses-different-module-resolution.js
+++ b/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly-when-the-referenced-project-uses-different-module-resolution.js
@@ -138,7 +138,7 @@ a_1.X;
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo.readable.baseline.txt]
 {
@@ -151,19 +151,23 @@ a_1.X;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-7808316224-export class A {}\n",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7808316224-export class A {}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -183,11 +187,11 @@ a_1.X;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 814
+  "size": 850
 }
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-17186364832-import {A} from 'a';\nexport const b = new A();","signature":"6078874460-import { A } from 'a';\nexport declare const b: A;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-17186364832-import {A} from 'a';\nexport const b = new A();","signature":"6078874460-import { A } from 'a';\nexport declare const b: A;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo.readable.baseline.txt]
 {
@@ -206,23 +210,32 @@ a_1.X;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-17186364832-import {A} from 'a';\nexport const b = new A();",
-          "signature": "6078874460-import { A } from 'a';\nexport declare const b: A;\n"
+          "signature": "6078874460-import { A } from 'a';\nexport declare const b: A;\n",
+          "impliedFormat": 1
         },
         "version": "-17186364832-import {A} from 'a';\nexport const b = new A();",
-        "signature": "6078874460-import { A } from 'a';\nexport declare const b: A;\n"
+        "signature": "6078874460-import { A } from 'a';\nexport declare const b: A;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -247,6 +260,6 @@ a_1.X;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 947
+  "size": 1013
 }
 
diff --git a/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly.js b/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly.js
index 8658ccf4b6204..70c009ffacffe 100644
--- a/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly.js
+++ b/tests/baselines/reference/tsbuild/transitiveReferences/builds-correctly.js
@@ -144,7 +144,7 @@ a_1.X;
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo.readable.baseline.txt]
 {
@@ -157,19 +157,23 @@ a_1.X;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-7808316224-export class A {}\n",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7808316224-export class A {}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -189,11 +193,11 @@ a_1.X;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 814
+  "size": 850
 }
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo.readable.baseline.txt]
 {
@@ -212,23 +216,32 @@ a_1.X;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n",
-          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+          "impliedFormat": 1
         },
         "version": "-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n",
-        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -253,6 +266,6 @@ a_1.X;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 959
+  "size": 1025
 }
 
diff --git a/tests/baselines/reference/tsbuild/transitiveReferences/reports-error-about-module-not-found-with-node-resolution-with-external-module-name.js b/tests/baselines/reference/tsbuild/transitiveReferences/reports-error-about-module-not-found-with-node-resolution-with-external-module-name.js
index e1075c2a7c4a7..abf3272062eb6 100644
--- a/tests/baselines/reference/tsbuild/transitiveReferences/reports-error-about-module-not-found-with-node-resolution-with-external-module-name.js
+++ b/tests/baselines/reference/tsbuild/transitiveReferences/reports-error-about-module-not-found-with-node-resolution-with-external-module-name.js
@@ -118,7 +118,7 @@ exports.A = A;
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo.readable.baseline.txt]
 {
@@ -131,19 +131,23 @@ exports.A = A;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-7808316224-export class A {}\n",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7808316224-export class A {}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -163,11 +167,11 @@ exports.A = A;
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 814
+  "size": 850
 }
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-17186364832-import {A} from 'a';\nexport const b = new A();"],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./b.ts","start":16,"length":3,"messageText":"Cannot find module 'a' or its corresponding type declarations.","category":1,"code":2307}]]],"affectedFilesPendingEmit":[2],"emitSignatures":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17186364832-import {A} from 'a';\nexport const b = new A();","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./b.ts","start":16,"length":3,"messageText":"Cannot find module 'a' or its corresponding type declarations.","category":1,"code":2307}]]],"affectedFilesPendingEmit":[2],"emitSignatures":[2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo.readable.baseline.txt]
 {
@@ -180,15 +184,22 @@ exports.A = A;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-17186364832-import {A} from 'a';\nexport const b = new A();",
+          "impliedFormat": 1
+        },
         "version": "-17186364832-import {A} from 'a';\nexport const b = new A();",
-        "signature": "-17186364832-import {A} from 'a';\nexport const b = new A();"
+        "signature": "-17186364832-import {A} from 'a';\nexport const b = new A();",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -228,6 +239,6 @@ exports.A = A;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 941
+  "size": 989
 }
 
diff --git a/tests/baselines/reference/tsbuildWatch/configFileErrors/reports-syntax-errors-in-config-file.js b/tests/baselines/reference/tsbuildWatch/configFileErrors/reports-syntax-errors-in-config-file.js
index 2338f060eecf4..47eab5e2a1130 100644
--- a/tests/baselines/reference/tsbuildWatch/configFileErrors/reports-syntax-errors-in-config-file.js
+++ b/tests/baselines/reference/tsbuildWatch/configFileErrors/reports-syntax-errors-in-config-file.js
@@ -46,7 +46,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","signature":false,"affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":false},{"version":"1045484683-export function bar() { }","signature":false}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":false,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":false,"impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -61,24 +61,30 @@ Output::
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "4646078106-export function foo() { }"
+        "version": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "1045484683-export function bar() { }"
+        "version": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,10 +108,26 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 754
+  "size": 808
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/a.ts: *new*
   {}
@@ -223,7 +245,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","signature":false,"affectsGlobalScope":true},{"version":"-3260843409-export function fooBar() { }","signature":false},{"version":"1045484683-export function bar() { }","signature":false}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-3260843409-export function fooBar() { }","signature":false,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":false,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"changeFileSet":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -238,24 +260,30 @@ Output::
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-3260843409-export function fooBar() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-3260843409-export function fooBar() { }"
+        "version": "-3260843409-export function fooBar() { }",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "1045484683-export function bar() { }"
+        "version": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -280,7 +308,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 777
+  "size": 831
 }
 
 
@@ -388,7 +416,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3260843409-export function fooBar() { }","signature":"-6611919720-export declare function fooBar(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3260843409-export function fooBar() { }","signature":"-6611919720-export declare function fooBar(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -402,27 +430,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-3260843409-export function fooBar() { }",
-          "signature": "-6611919720-export declare function fooBar(): void;\n"
+          "signature": "-6611919720-export declare function fooBar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-3260843409-export function fooBar() { }",
-        "signature": "-6611919720-export declare function fooBar(): void;\n"
+        "signature": "-6611919720-export declare function fooBar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -448,7 +482,7 @@ Output::
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 903
+  "size": 957
 }
 
 //// [/user/username/projects/myproject/a.js]
diff --git a/tests/baselines/reference/tsbuildWatch/demo/updates-with-bad-reference.js b/tests/baselines/reference/tsbuildWatch/demo/updates-with-bad-reference.js
index 0d548918b8e29..42f6c2e900831 100644
--- a/tests/baselines/reference/tsbuildWatch/demo/updates-with-bad-reference.js
+++ b/tests/baselines/reference/tsbuildWatch/demo/updates-with-bad-reference.js
@@ -220,7 +220,7 @@ Output::
 
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/dog.ts","../../animals/index.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n"],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"fileIdsList":[[4,5],[2,3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,2,3,4,[5,[{"file":"../../core/utilities.ts","start":0,"length":32,"messageText":"'A' is declared but its value is never read.","category":1,"code":6133,"reportsUnnecessary":true}]]],"affectedFilesPendingEmit":[2,3,4,5],"emitSignatures":[2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/dog.ts","../../animals/index.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"fileIdsList":[[4,5],[2,3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,2,3,4,[5,[{"file":"../../core/utilities.ts","start":0,"length":32,"messageText":"'A' is declared but its value is never read.","category":1,"code":6133,"reportsUnnecessary":true}]]],"affectedFilesPendingEmit":[2,3,4,5],"emitSignatures":[2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -249,27 +249,49 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
+        "original": {
+          "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n"
+        "signature": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
+        "original": {
+          "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
+        },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
+        "original": {
+          "version": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n"
+        "signature": "-22163106409-import * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -350,13 +372,29 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2200
+  "size": 2338
 }
 
 
 PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/demo/animals/package.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/demo/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/demo/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/demo/animals/animal.ts: *new*
@@ -518,7 +556,7 @@ Output::
 
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/dog.ts","../../animals/index.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"},{"version":"-11321611519-\nimport * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"fileIdsList":[[4,5],[2,3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,2,3,4,[5,[{"file":"../../core/utilities.ts","start":1,"length":32,"messageText":"'A' is declared but its value is never read.","category":1,"code":6133,"reportsUnnecessary":true}]]],"affectedFilesPendingEmit":[2,3,4,5],"emitSignatures":[2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/dog.ts","../../animals/index.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-11321611519-\nimport * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"fileIdsList":[[4,5],[2,3],[4]],"referencedMap":[[3,1],[4,2],[5,3]],"semanticDiagnosticsPerFile":[1,2,3,4,[5,[{"file":"../../core/utilities.ts","start":1,"length":32,"messageText":"'A' is declared but its value is never read.","category":1,"code":6133,"reportsUnnecessary":true}]]],"affectedFilesPendingEmit":[2,3,4,5],"emitSignatures":[2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -547,39 +585,52 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
         "original": {
           "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
         },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
         "original": {
           "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
         },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
         "original": {
           "version": "-11321611519-\nimport * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
         },
         "version": "-11321611519-\nimport * as A from '../animals';\nexport function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -660,7 +711,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2710
+  "size": 2812
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/demo/updates-with-circular-reference.js b/tests/baselines/reference/tsbuildWatch/demo/updates-with-circular-reference.js
index 6c516a69f550f..cf3a942792691 100644
--- a/tests/baselines/reference/tsbuildWatch/demo/updates-with-circular-reference.js
+++ b/tests/baselines/reference/tsbuildWatch/demo/updates-with-circular-reference.js
@@ -249,7 +249,7 @@ export declare function lastElementOf<T>(arr: T[]): T | undefined;
 
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"}],"root":[2],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./utilities.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./utilities.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -262,19 +262,23 @@ export declare function lastElementOf<T>(arr: T[]): T | undefined;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
         "original": {
           "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
         },
         "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -304,7 +308,7 @@ export declare function lastElementOf<T>(arr: T[]): T | undefined;
     "latestChangedDtsFile": "./utilities.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1324
+  "size": 1360
 }
 
 
@@ -381,7 +385,7 @@ export declare function createDog(): Dog;
 
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../core/utilities.d.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"},"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../core/utilities.d.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -407,35 +411,51 @@ export declare function createDog(): Dog;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
         "original": {
           "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
         },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../core/utilities.d.ts": {
+        "original": {
+          "version": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
+        },
         "version": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
         "original": {
           "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
         },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -485,7 +505,7 @@ export declare function createDog(): Dog;
     "latestChangedDtsFile": "./dog.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2221
+  "size": 2335
 }
 
 //// [/user/username/projects/demo/lib/zoo/zoo.js]
@@ -506,7 +526,7 @@ export declare function createZoo(): Array<Dog>;
 
 
 //// [/user/username/projects/demo/lib/zoo/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../animals/animal.d.ts","../animals/dog.d.ts","../animals/index.d.ts","../../zoo/zoo.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",{"version":"13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n","signature":"10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../zoo","strict":true,"target":1},"fileIdsList":[[4],[2,3]],"referencedMap":[[3,1],[4,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./zoo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../animals/animal.d.ts","../animals/dog.d.ts","../animals/index.d.ts","../../zoo/zoo.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1},{"version":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n","signature":"10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../zoo","strict":true,"target":1},"fileIdsList":[[4],[2,3]],"referencedMap":[[3,1],[4,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./zoo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/zoo/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -531,31 +551,50 @@ export declare function createZoo(): Array<Dog>;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../animals/animal.d.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../animals/dog.d.ts": {
+        "original": {
+          "version": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
+        },
         "version": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       },
       "../animals/index.d.ts": {
+        "original": {
+          "version": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
+        },
         "version": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../zoo/zoo.ts": {
         "original": {
           "version": "13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n",
-          "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n"
+          "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n",
+          "impliedFormat": 1
         },
         "version": "13034796418-import { Dog, createDog } from '../animals/index';\n\nexport function createZoo(): Array<Dog> {\n    return [\n        createDog()\n    ];\n}\n",
-        "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n"
+        "signature": "10305066551-import { Dog } from '../animals/index';\nexport declare function createZoo(): Array<Dog>;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -599,7 +638,7 @@ export declare function createZoo(): Array<Dog>;
     "latestChangedDtsFile": "./zoo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1763
+  "size": 1889
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config-with-redirection.js b/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config-with-redirection.js
index 78926e3d79168..79ba8f93656cf 100644
--- a/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config-with-redirection.js
+++ b/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config-with-redirection.js
@@ -187,6 +187,21 @@ Output::
 
 [HH:MM:SS AM] Building project '/home/src/projects/project1/tsconfig.json'...
 
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -202,6 +217,13 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -217,6 +239,13 @@ File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -232,10 +261,34 @@ File '/home/src/projects/node_modules/@typescript/lib-es5/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -254,6 +307,13 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-webworker/index.d.ts
   Library referenced via 'webworker' from file 'project1/file2.ts'
 node_modules/@typescript/lib-scripthost/index.d.ts
@@ -280,6 +340,16 @@ project1/typeroot1/sometype/index.d.ts
 
 [HH:MM:SS AM] Building project '/home/src/projects/project2/tsconfig.json'...
 
+File '/home/src/projects/project2/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project2/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -288,6 +358,13 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -296,6 +373,13 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-es5/index.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 node_modules/@typescript/lib-dom/index.d.ts
@@ -308,6 +392,16 @@ project2/utils.d.ts
 
 [HH:MM:SS AM] Building project '/home/src/projects/project3/tsconfig.json'...
 
+File '/home/src/projects/project3/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project3/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -316,6 +410,13 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -324,6 +425,13 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-es5/index.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 node_modules/@typescript/lib-dom/index.d.ts
@@ -336,6 +444,16 @@ project3/utils.d.ts
 
 [HH:MM:SS AM] Building project '/home/src/projects/project4/tsconfig.json'...
 
+File '/home/src/projects/project4/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project4/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-esnext' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -351,6 +469,13 @@ File '/home/src/projects/node_modules/@typescript/lib-esnext/index.tsx' does not
 File '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts'.
 ======== Module name '@typescript/lib-esnext' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-esnext/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-esnext/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -359,6 +484,13 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -367,6 +499,13 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-webworker'
 Resolution for module '@typescript/lib-webworker' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-esnext/index.d.ts
   Library 'lib.esnext.d.ts' specified in compilerOptions
 node_modules/@typescript/lib-dom/index.d.ts
@@ -388,26 +527,37 @@ FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/file2.ts 250 undefi
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/index.ts 250 undefined Source file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/utils.d.ts 250 undefined Source file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/index.d.ts 250 undefined Source file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-scripthost/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-es5/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/tsconfig.json 2000 undefined Config file /home/src/projects/project2/tsconfig.json
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project2 1 undefined Wild card directory /home/src/projects/project2/tsconfig.json
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project2 1 undefined Wild card directory /home/src/projects/project2/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/index.ts 250 undefined Source file /home/src/projects/project2/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/utils.d.ts 250 undefined Source file /home/src/projects/project2/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/package.json 2000 undefined package.json file /home/src/projects/project2/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/tsconfig.json 2000 undefined Config file /home/src/projects/project3/tsconfig.json
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project3 1 undefined Wild card directory /home/src/projects/project3/tsconfig.json
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project3 1 undefined Wild card directory /home/src/projects/project3/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/index.ts 250 undefined Source file /home/src/projects/project3/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/utils.d.ts 250 undefined Source file /home/src/projects/project3/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/package.json 2000 undefined package.json file /home/src/projects/project3/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/tsconfig.json 2000 undefined Config file /home/src/projects/project4/tsconfig.json
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project4 1 undefined Wild card directory /home/src/projects/project4/tsconfig.json
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project4 1 undefined Wild card directory /home/src/projects/project4/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/index.ts 250 undefined Source file /home/src/projects/project4/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/utils.d.ts 250 undefined Source file /home/src/projects/project4/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/package.json 2000 undefined package.json file /home/src/projects/project4/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-esnext/package.json 2000 undefined package.json file /home/src/projects/project4/tsconfig.json
 
 
@@ -443,7 +593,7 @@ export declare const x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -464,74 +614,103 @@ export declare const x = "type1";
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -569,7 +748,7 @@ export declare const x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1763
+  "size": 1979
 }
 
 //// [/home/src/projects/project2/index.js]
@@ -584,7 +763,7 @@ export declare const y = 10;
 
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -599,32 +778,43 @@ export declare const y = 10;
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11999455899-export const y = 10",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11999455899-export const y = 10",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -650,7 +840,7 @@ export declare const y = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1029
+  "size": 1113
 }
 
 //// [/home/src/projects/project3/index.js]
@@ -665,7 +855,7 @@ export declare const z = 10;
 
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -680,32 +870,43 @@ export declare const z = 10;
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -731,7 +932,7 @@ export declare const z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1029
+  "size": 1113
 }
 
 //// [/home/src/projects/project4/index.js]
@@ -746,7 +947,7 @@ export declare const z = 10;
 
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-esnext/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-esnext/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -762,41 +963,54 @@ export declare const z = 10;
       "../node_modules/@typescript/lib-esnext/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -823,11 +1037,15 @@ export declare const z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1174
+  "size": 1276
 }
 
 
 PolledWatches::
+/home/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/node_modules/@typescript/lib-dom/package.json: *new*
   {"pollingInterval":2000}
 /home/src/projects/node_modules/@typescript/lib-es5/package.json: *new*
@@ -838,8 +1056,26 @@ PolledWatches::
   {"pollingInterval":2000}
 /home/src/projects/node_modules/@typescript/lib-webworker/package.json: *new*
   {"pollingInterval":2000}
+/home/src/projects/node_modules/@typescript/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project1/typeroot1/sometype/package.json: *new*
   {"pollingInterval":2000}
+/home/src/projects/project2/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project3/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project4/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/project1/core.d.ts: *new*
diff --git a/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config.js b/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config.js
index 7a00208642df9..62b70c54ccc74 100644
--- a/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config.js
+++ b/tests/baselines/reference/tsbuildWatch/libraryResolution/with-config.js
@@ -148,6 +148,21 @@ Output::
 
 [HH:MM:SS AM] Building project '/home/src/projects/project1/tsconfig.json'...
 
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -174,6 +189,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -200,6 +219,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -226,10 +249,31 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -259,6 +303,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
   Library 'lib.es5.d.ts' specified in compilerOptions
@@ -285,6 +333,16 @@ project1/typeroot1/sometype/index.d.ts
 
 [HH:MM:SS AM] Building project '/home/src/projects/project2/tsconfig.json'...
 
+File '/home/src/projects/project2/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project2/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -293,6 +351,10 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project2/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -301,6 +363,10 @@ Directory '/home/src/projects/project2/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 ../lib/lib.dom.d.ts
@@ -313,6 +379,16 @@ project2/utils.d.ts
 
 [HH:MM:SS AM] Building project '/home/src/projects/project3/tsconfig.json'...
 
+File '/home/src/projects/project3/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project3/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -321,6 +397,10 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-es5'
 Resolution for module '@typescript/lib-es5' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project3/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -329,6 +409,10 @@ Directory '/home/src/projects/project3/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 ../lib/lib.dom.d.ts
@@ -341,6 +425,16 @@ project3/utils.d.ts
 
 [HH:MM:SS AM] Building project '/home/src/projects/project4/tsconfig.json'...
 
+File '/home/src/projects/project4/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project4/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-esnext' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -367,6 +461,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-esnext' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -375,6 +473,10 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-dom'
 Resolution for module '@typescript/lib-dom' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project4/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -383,6 +485,10 @@ Directory '/home/src/projects/project4/node_modules' does not exist, skipping al
 Scoped package detected, looking in 'typescript__lib-webworker'
 Resolution for module '@typescript/lib-webworker' was found in cache from location '/home/src/projects'.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.esnext.d.ts
   Library 'lib.esnext.d.ts' specified in compilerOptions
 ../lib/lib.dom.d.ts
@@ -404,26 +510,36 @@ FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/file2.ts 250 undefi
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/index.ts 250 undefined Source file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/utils.d.ts 250 undefined Source file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/index.d.ts 250 undefined Source file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/lib/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-scripthost/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-es5/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/package.json 2000 undefined package.json file /home/src/projects/project1/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/tsconfig.json 2000 undefined Config file /home/src/projects/project2/tsconfig.json
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project2 1 undefined Wild card directory /home/src/projects/project2/tsconfig.json
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project2 1 undefined Wild card directory /home/src/projects/project2/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/index.ts 250 undefined Source file /home/src/projects/project2/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/utils.d.ts 250 undefined Source file /home/src/projects/project2/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project2/package.json 2000 undefined package.json file /home/src/projects/project2/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/tsconfig.json 2000 undefined Config file /home/src/projects/project3/tsconfig.json
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project3 1 undefined Wild card directory /home/src/projects/project3/tsconfig.json
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project3 1 undefined Wild card directory /home/src/projects/project3/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/index.ts 250 undefined Source file /home/src/projects/project3/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/utils.d.ts 250 undefined Source file /home/src/projects/project3/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project3/package.json 2000 undefined package.json file /home/src/projects/project3/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/tsconfig.json 2000 undefined Config file /home/src/projects/project4/tsconfig.json
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project4 1 undefined Wild card directory /home/src/projects/project4/tsconfig.json
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project4 1 undefined Wild card directory /home/src/projects/project4/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/index.ts 250 undefined Source file /home/src/projects/project4/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/utils.d.ts 250 undefined Source file /home/src/projects/project4/tsconfig.json
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project4/package.json 2000 undefined package.json file /home/src/projects/project4/tsconfig.json
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-esnext/package.json 2000 undefined package.json file /home/src/projects/project4/tsconfig.json
 
 
@@ -459,7 +575,7 @@ export declare const x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -480,74 +596,103 @@ export declare const x = "type1";
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -585,7 +730,7 @@ export declare const x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1667
+  "size": 1883
 }
 
 //// [/home/src/projects/project2/index.js]
@@ -600,7 +745,7 @@ export declare const y = 10;
 
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11999455899-export const y = 10","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -615,32 +760,43 @@ export declare const y = 10;
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11999455899-export const y = 10",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11999455899-export const y = 10",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -666,7 +822,7 @@ export declare const y = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 981
+  "size": 1065
 }
 
 //// [/home/src/projects/project3/index.js]
@@ -681,7 +837,7 @@ export declare const z = 10;
 
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[3,4],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -696,32 +852,43 @@ export declare const z = 10;
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -747,7 +914,7 @@ export declare const z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 981
+  "size": 1065
 }
 
 //// [/home/src/projects/project4/index.js]
@@ -762,7 +929,7 @@ export declare const z = 10;
 
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.esnext.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n"},"-13729955264-export const y = 10;"],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.esnext.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","./index.ts","./utils.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320506-export const z = 10","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[4,5],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,3,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -778,41 +945,54 @@ export declare const z = 10;
       "../../lib/lib.esnext.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11960320506-export const z = 10",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320506-export const z = 10",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -839,11 +1019,17 @@ export declare const z = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1102
+  "size": 1204
 }
 
 
 PolledWatches::
+/home/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/lib/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/node_modules/@typescript/lib-dom/package.json: *new*
   {"pollingInterval":2000}
 /home/src/projects/node_modules/@typescript/lib-es5/package.json: *new*
@@ -854,8 +1040,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /home/src/projects/node_modules/@typescript/lib-webworker/package.json: *new*
   {"pollingInterval":2000}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project1/typeroot1/sometype/package.json: *new*
   {"pollingInterval":2000}
+/home/src/projects/project2/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project3/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project4/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/project1/core.d.ts: *new*
diff --git a/tests/baselines/reference/tsbuildWatch/moduleResolution/build-mode-watches-for-changes-to-package-json-main-fields.js b/tests/baselines/reference/tsbuildWatch/moduleResolution/build-mode-watches-for-changes-to-package-json-main-fields.js
index 9fb4741b4bd1b..de337b8e63eee 100644
--- a/tests/baselines/reference/tsbuildWatch/moduleResolution/build-mode-watches-for-changes-to-package-json-main-fields.js
+++ b/tests/baselines/reference/tsbuildWatch/moduleResolution/build-mode-watches-for-changes-to-package-json-main-fields.js
@@ -76,16 +76,23 @@ Output::
 
 [HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const.js', target file types: TypeScript, Declaration.
 File name '/user/username/projects/myproject/packages/pkg2/const.js' has a '.js' extension - stripping it.
 File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
 ======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Project 'packages/pkg1/tsconfig.json' is out of date because output file 'packages/pkg1/build/index.js' does not exist
 
 [HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg1/tsconfig.json'...
 
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg1/package.json'.
 ======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -107,6 +114,8 @@ File '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' exis
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'.
 ======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/index.d.ts' with Package ID 'pkg2/build/index.d.ts@1.0.0'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/myproject/packages/pkg2/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
@@ -116,6 +125,11 @@ File '/user/username/projects/myproject/packages/pkg2/build/const.ts' does not e
 File '/user/username/projects/myproject/packages/pkg2/build/const.tsx' does not exist.
 File '/user/username/projects/myproject/packages/pkg2/build/const.d.ts' exists - use it as a name resolution result.
 ======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/const.d.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -148,7 +162,7 @@ export type TheStr = string;
 
 
 //// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../const.ts","../index.ts","../other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-11202312776-export type TheNum = 42;","signature":"-13194036030-export type TheNum = 42;\n"},{"version":"-11225381282-export type { TheNum } from './const.js';","signature":"-9660329432-export type { TheNum } from './const.js';\n"},{"version":"-4609154030-export type TheStr = string;","signature":"-6073194916-export type TheStr = string;\n"}],"root":[[2,4]],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../const.ts","../index.ts","../other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11202312776-export type TheNum = 42;","signature":"-13194036030-export type TheNum = 42;\n","impliedFormat":1},{"version":"-11225381282-export type { TheNum } from './const.js';","signature":"-9660329432-export type { TheNum } from './const.js';\n","impliedFormat":1},{"version":"-4609154030-export type TheStr = string;","signature":"-6073194916-export type TheStr = string;\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,35 +182,43 @@ export type TheStr = string;
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../const.ts": {
         "original": {
           "version": "-11202312776-export type TheNum = 42;",
-          "signature": "-13194036030-export type TheNum = 42;\n"
+          "signature": "-13194036030-export type TheNum = 42;\n",
+          "impliedFormat": 1
         },
         "version": "-11202312776-export type TheNum = 42;",
-        "signature": "-13194036030-export type TheNum = 42;\n"
+        "signature": "-13194036030-export type TheNum = 42;\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "-11225381282-export type { TheNum } from './const.js';",
-          "signature": "-9660329432-export type { TheNum } from './const.js';\n"
+          "signature": "-9660329432-export type { TheNum } from './const.js';\n",
+          "impliedFormat": 1
         },
         "version": "-11225381282-export type { TheNum } from './const.js';",
-        "signature": "-9660329432-export type { TheNum } from './const.js';\n"
+        "signature": "-9660329432-export type { TheNum } from './const.js';\n",
+        "impliedFormat": "commonjs"
       },
       "../other.ts": {
         "original": {
           "version": "-4609154030-export type TheStr = string;",
-          "signature": "-6073194916-export type TheStr = string;\n"
+          "signature": "-6073194916-export type TheStr = string;\n",
+          "impliedFormat": 1
         },
         "version": "-4609154030-export type TheStr = string;",
-        "signature": "-6073194916-export type TheStr = string;\n"
+        "signature": "-6073194916-export type TheStr = string;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -230,7 +252,7 @@ export type TheStr = string;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1082
+  "size": 1154
 }
 
 //// [/user/username/projects/myproject/packages/pkg1/build/index.js]
@@ -241,9 +263,21 @@ exports.theNum = 42;
 
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/pkg2/build/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/packages/pkg1/index.ts: *new*
   {}
+/user/username/projects/myproject/packages/pkg1/package.json: *new*
+  {}
 /user/username/projects/myproject/packages/pkg1/tsconfig.json: *new*
   {}
 /user/username/projects/myproject/packages/pkg2/const.ts: *new*
@@ -337,74 +371,65 @@ Input::
 
 
 Timeout callback:: count: 1
-1: timerToBuildInvalidatedProject *new*
+2: timerToBuildInvalidatedProject *new*
 
 Before running Timeout callback:: count: 1
-1: timerToBuildInvalidatedProject
+2: timerToBuildInvalidatedProject
 
-After running Timeout callback:: count: 0
+After running Timeout callback:: count: 1
 Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
-[HH:MM:SS AM] Project 'packages/pkg1/tsconfig.json' is out of date because output 'packages/pkg1/build/index.js' is older than input 'packages/pkg2/package.json'
+[HH:MM:SS AM] Project 'packages/pkg2/tsconfig.json' is out of date because output 'packages/pkg2/build/tsconfig.tsbuildinfo' is older than input 'packages/pkg2/package.json'
 
-[HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg1/tsconfig.json'...
+[HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
-======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
-Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
-Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
-Directory '/user/username/projects/myproject/packages/pkg1/node_modules' does not exist, skipping all lookups in it.
-Directory '/user/username/projects/myproject/packages/node_modules' does not exist, skipping all lookups in it.
-Found 'package.json' at '/user/username/projects/myproject/node_modules/pkg2/package.json'.
-File '/user/username/projects/myproject/node_modules/pkg2.ts' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2.tsx' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2.d.ts' does not exist.
-'package.json' does not have a 'typesVersions' field.
-'package.json' does not have a 'typings' field.
-'package.json' does not have a 'types' field.
-'package.json' has 'main' field 'build/other.js' that references '/user/username/projects/myproject/node_modules/pkg2/build/other.js'.
-File name '/user/username/projects/myproject/node_modules/pkg2/build/other.js' has a '.js' extension - stripping it.
-File '/user/username/projects/myproject/node_modules/pkg2/build/other.ts' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2/build/other.tsx' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2/build/other.d.ts' exists - use it as a name resolution result.
-'package.json' does not have a 'peerDependencies' field.
-Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/other.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/other.d.ts'.
-======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/other.d.ts' with Package ID 'pkg2/build/other.d.ts@1.0.0'. ========
-packages/pkg1/index.ts:1:15 - error TS2305: Module '"pkg2"' has no exported member 'TheNum'.
-
-1 import type { TheNum } from 'pkg2'
-                ~~~~~~
-
-[HH:MM:SS AM] Found 1 error. Watching for file changes.
+Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const.js', target file types: TypeScript, Declaration.
+File name '/user/username/projects/myproject/packages/pkg2/const.js' has a '.js' extension - stripping it.
+File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
+======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+[HH:MM:SS AM] Updating unchanged output timestamps of project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
 
 
+//// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo] file changed its modified time
+
+Timeout callback:: count: 1
+3: timerToBuildInvalidatedProject *new*
 
 
 Program root files: [
-  "/user/username/projects/myproject/packages/pkg1/index.ts"
+  "/user/username/projects/myproject/packages/pkg2/const.ts",
+  "/user/username/projects/myproject/packages/pkg2/index.ts",
+  "/user/username/projects/myproject/packages/pkg2/other.ts"
 ]
 Program options: {
-  "outDir": "/user/username/projects/myproject/packages/pkg1/build",
+  "composite": true,
+  "outDir": "/user/username/projects/myproject/packages/pkg2/build",
+  "baseUrl": "/user/username/projects/myproject/packages/pkg2",
   "watch": true,
   "traceResolution": true,
-  "configFilePath": "/user/username/projects/myproject/packages/pkg1/tsconfig.json"
+  "configFilePath": "/user/username/projects/myproject/packages/pkg2/tsconfig.json"
 }
 Program structureReused: Not
 Program files::
 /a/lib/lib.d.ts
-/user/username/projects/myproject/packages/pkg2/build/other.d.ts
-/user/username/projects/myproject/packages/pkg1/index.ts
+/user/username/projects/myproject/packages/pkg2/const.ts
+/user/username/projects/myproject/packages/pkg2/index.ts
+/user/username/projects/myproject/packages/pkg2/other.ts
 
 Semantic diagnostics in builder refreshed for::
-/user/username/projects/myproject/packages/pkg2/build/other.d.ts
-/user/username/projects/myproject/packages/pkg1/index.ts
 
-Shape signatures in builder refreshed for::
-/user/username/projects/myproject/packages/pkg2/build/other.d.ts (used version)
-/user/username/projects/myproject/packages/pkg1/index.ts (computed .d.ts)
+No shapes updated in the builder::
 
 exitCode:: ExitStatus.undefined
 
@@ -420,81 +445,65 @@ Input::
 
 
 Timeout callback:: count: 1
-2: timerToBuildInvalidatedProject *new*
+3: timerToBuildInvalidatedProject *deleted*
+5: timerToBuildInvalidatedProject *new*
 
 Before running Timeout callback:: count: 1
-2: timerToBuildInvalidatedProject
+5: timerToBuildInvalidatedProject
 
-After running Timeout callback:: count: 0
+After running Timeout callback:: count: 1
 Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
-[HH:MM:SS AM] Project 'packages/pkg1/tsconfig.json' is out of date because output 'packages/pkg1/build/index.js' is older than input 'packages/pkg2/package.json'
+[HH:MM:SS AM] Project 'packages/pkg2/tsconfig.json' is out of date because output 'packages/pkg2/build/tsconfig.tsbuildinfo' is older than input 'packages/pkg2/package.json'
 
-[HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg1/tsconfig.json'...
+[HH:MM:SS AM] Building project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
-======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
-Module resolution kind is not specified, using 'Node10'.
-Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
-Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
-Directory '/user/username/projects/myproject/packages/pkg1/node_modules' does not exist, skipping all lookups in it.
-Directory '/user/username/projects/myproject/packages/node_modules' does not exist, skipping all lookups in it.
-Found 'package.json' at '/user/username/projects/myproject/node_modules/pkg2/package.json'.
-File '/user/username/projects/myproject/node_modules/pkg2.ts' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2.tsx' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2.d.ts' does not exist.
-'package.json' does not have a 'typesVersions' field.
-'package.json' does not have a 'typings' field.
-'package.json' does not have a 'types' field.
-'package.json' has 'main' field 'build/index.js' that references '/user/username/projects/myproject/node_modules/pkg2/build/index.js'.
-File name '/user/username/projects/myproject/node_modules/pkg2/build/index.js' has a '.js' extension - stripping it.
-File '/user/username/projects/myproject/node_modules/pkg2/build/index.ts' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2/build/index.tsx' does not exist.
-File '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' exists - use it as a name resolution result.
-'package.json' does not have a 'peerDependencies' field.
-Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'.
-======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/index.d.ts' with Package ID 'pkg2/build/index.d.ts@1.0.0'. ========
-======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'. ========
-Using compiler options of project reference redirect '/user/username/projects/myproject/packages/pkg2/tsconfig.json'.
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
-Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/build/const.js', target file types: TypeScript, Declaration.
-File name '/user/username/projects/myproject/packages/pkg2/build/const.js' has a '.js' extension - stripping it.
-File '/user/username/projects/myproject/packages/pkg2/build/const.ts' does not exist.
-File '/user/username/projects/myproject/packages/pkg2/build/const.tsx' does not exist.
-File '/user/username/projects/myproject/packages/pkg2/build/const.d.ts' exists - use it as a name resolution result.
-======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/const.d.ts'. ========
-[HH:MM:SS AM] Found 0 errors. Watching for file changes.
+Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/const.js', target file types: TypeScript, Declaration.
+File name '/user/username/projects/myproject/packages/pkg2/const.js' has a '.js' extension - stripping it.
+File '/user/username/projects/myproject/packages/pkg2/const.ts' exists - use it as a name resolution result.
+======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/const.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+[HH:MM:SS AM] Updating unchanged output timestamps of project '/user/username/projects/myproject/packages/pkg2/tsconfig.json'...
 
 
 
-//// [/user/username/projects/myproject/packages/pkg1/build/index.js] file written with same contents
+//// [/user/username/projects/myproject/packages/pkg2/build/tsconfig.tsbuildinfo] file changed its modified time
+
+Timeout callback:: count: 1
+6: timerToBuildInvalidatedProject *new*
 
 
 Program root files: [
-  "/user/username/projects/myproject/packages/pkg1/index.ts"
+  "/user/username/projects/myproject/packages/pkg2/const.ts",
+  "/user/username/projects/myproject/packages/pkg2/index.ts",
+  "/user/username/projects/myproject/packages/pkg2/other.ts"
 ]
 Program options: {
-  "outDir": "/user/username/projects/myproject/packages/pkg1/build",
+  "composite": true,
+  "outDir": "/user/username/projects/myproject/packages/pkg2/build",
+  "baseUrl": "/user/username/projects/myproject/packages/pkg2",
   "watch": true,
   "traceResolution": true,
-  "configFilePath": "/user/username/projects/myproject/packages/pkg1/tsconfig.json"
+  "configFilePath": "/user/username/projects/myproject/packages/pkg2/tsconfig.json"
 }
 Program structureReused: Not
 Program files::
 /a/lib/lib.d.ts
-/user/username/projects/myproject/packages/pkg2/build/const.d.ts
-/user/username/projects/myproject/packages/pkg2/build/index.d.ts
-/user/username/projects/myproject/packages/pkg1/index.ts
+/user/username/projects/myproject/packages/pkg2/const.ts
+/user/username/projects/myproject/packages/pkg2/index.ts
+/user/username/projects/myproject/packages/pkg2/other.ts
 
 Semantic diagnostics in builder refreshed for::
-/user/username/projects/myproject/packages/pkg2/build/const.d.ts
-/user/username/projects/myproject/packages/pkg2/build/index.d.ts
-/user/username/projects/myproject/packages/pkg1/index.ts
 
-Shape signatures in builder refreshed for::
-/user/username/projects/myproject/packages/pkg2/build/const.d.ts (used version)
-/user/username/projects/myproject/packages/pkg2/build/index.d.ts (used version)
-/user/username/projects/myproject/packages/pkg1/index.ts (computed .d.ts)
+No shapes updated in the builder::
 
 exitCode:: ExitStatus.undefined
diff --git a/tests/baselines/reference/tsbuildWatch/moduleResolutionCache/handles-the-cache-correctly-when-two-projects-use-different-module-resolution-settings.js b/tests/baselines/reference/tsbuildWatch/moduleResolutionCache/handles-the-cache-correctly-when-two-projects-use-different-module-resolution-settings.js
index 75075ecd7a8dc..56c113d274c88 100644
--- a/tests/baselines/reference/tsbuildWatch/moduleResolutionCache/handles-the-cache-correctly-when-two-projects-use-different-module-resolution-settings.js
+++ b/tests/baselines/reference/tsbuildWatch/moduleResolutionCache/handles-the-cache-correctly-when-two-projects-use-different-module-resolution-settings.js
@@ -105,7 +105,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./node_modules/file/index.d.ts","./index.ts","../node_modules/@types/foo/index.d.ts","../node_modules/@types/bar/index.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-12737086933-export const foo = 10;",{"version":"-4708082513-import { foo } from \"file\";","signature":"-3531856636-export {};\n"},"-12737086933-export const foo = 10;","-12042713060-export const bar = 10;"],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,5,4,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./node_modules/file/index.d.ts","./index.ts","../node_modules/@types/foo/index.d.ts","../node_modules/@types/bar/index.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12737086933-export const foo = 10;","impliedFormat":1},{"version":"-4708082513-import { foo } from \"file\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-12737086933-export const foo = 10;","impliedFormat":1},{"version":"-12042713060-export const bar = 10;","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,5,4,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -126,31 +126,50 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/file/index.d.ts": {
+        "original": {
+          "version": "-12737086933-export const foo = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12737086933-export const foo = 10;",
-        "signature": "-12737086933-export const foo = 10;"
+        "signature": "-12737086933-export const foo = 10;",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-4708082513-import { foo } from \"file\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-4708082513-import { foo } from \"file\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@types/foo/index.d.ts": {
+        "original": {
+          "version": "-12737086933-export const foo = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12737086933-export const foo = 10;",
-        "signature": "-12737086933-export const foo = 10;"
+        "signature": "-12737086933-export const foo = 10;",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@types/bar/index.d.ts": {
+        "original": {
+          "version": "-12042713060-export const bar = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12042713060-export const bar = 10;",
-        "signature": "-12042713060-export const bar = 10;"
+        "signature": "-12042713060-export const bar = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -177,7 +196,7 @@ export {};
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 996
+  "size": 1122
 }
 
 //// [/user/username/projects/myproject/project2/index.js]
@@ -190,7 +209,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./file.d.ts","./index.ts","../node_modules/@types/foo/index.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-12737086933-export const foo = 10;",{"version":"-4708082513-import { foo } from \"file\";","signature":"-3531856636-export {};\n"},"-12737086933-export const foo = 10;"],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,4,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./file.d.ts","./index.ts","../node_modules/@types/foo/index.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12737086933-export const foo = 10;","impliedFormat":1},{"version":"-4708082513-import { foo } from \"file\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-12737086933-export const foo = 10;","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,4,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -210,27 +229,41 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.d.ts": {
+        "original": {
+          "version": "-12737086933-export const foo = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12737086933-export const foo = 10;",
-        "signature": "-12737086933-export const foo = 10;"
+        "signature": "-12737086933-export const foo = 10;",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-4708082513-import { foo } from \"file\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-4708082513-import { foo } from \"file\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@types/foo/index.d.ts": {
+        "original": {
+          "version": "-12737086933-export const foo = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12737086933-export const foo = 10;",
-        "signature": "-12737086933-export const foo = 10;"
+        "signature": "-12737086933-export const foo = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -256,17 +289,41 @@ export {};
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 897
+  "size": 993
 }
 
 
 PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types/bar/package.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types/foo/package.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/project1/node_modules/file/package.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/project1/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/project1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/project2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/project1/index.ts: *new*
@@ -380,7 +437,7 @@ var bar = 10;
 
 
 //// [/user/username/projects/myproject/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./node_modules/file/index.d.ts","./index.ts","../node_modules/@types/foo/index.d.ts","../node_modules/@types/bar/index.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-12737086933-export const foo = 10;",{"version":"-7561100220-import { foo } from \"file\";const bar = 10;","signature":"-3531856636-export {};\n"},"-12737086933-export const foo = 10;","-12042713060-export const bar = 10;"],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,5,4,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./node_modules/file/index.d.ts","./index.ts","../node_modules/@types/foo/index.d.ts","../node_modules/@types/bar/index.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12737086933-export const foo = 10;","impliedFormat":1},{"version":"-7561100220-import { foo } from \"file\";const bar = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-12737086933-export const foo = 10;","impliedFormat":1},{"version":"-12042713060-export const bar = 10;","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,5,4,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -401,31 +458,50 @@ var bar = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/file/index.d.ts": {
+        "original": {
+          "version": "-12737086933-export const foo = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12737086933-export const foo = 10;",
-        "signature": "-12737086933-export const foo = 10;"
+        "signature": "-12737086933-export const foo = 10;",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7561100220-import { foo } from \"file\";const bar = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-7561100220-import { foo } from \"file\";const bar = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@types/foo/index.d.ts": {
+        "original": {
+          "version": "-12737086933-export const foo = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12737086933-export const foo = 10;",
-        "signature": "-12737086933-export const foo = 10;"
+        "signature": "-12737086933-export const foo = 10;",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@types/bar/index.d.ts": {
+        "original": {
+          "version": "-12042713060-export const bar = 10;",
+          "impliedFormat": 1
+        },
         "version": "-12042713060-export const bar = 10;",
-        "signature": "-12042713060-export const bar = 10;"
+        "signature": "-12042713060-export const bar = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -452,7 +528,7 @@ var bar = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1011
+  "size": 1137
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted-with-incremental.js b/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted-with-incremental.js
index 4a3d1d976a6cc..57b1fee34b6e7 100644
--- a/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted-with-incremental.js
+++ b/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted-with-incremental.js
@@ -47,7 +47,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.js","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"5381-","5381-"],"root":[2,3],"options":{"allowJs":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.js","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5381-","impliedFormat":1},{"version":"5381-","impliedFormat":1}],"root":[2,3],"options":{"allowJs":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -61,19 +61,31 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.js": {
+        "original": {
+          "version": "5381-",
+          "impliedFormat": 1
+        },
         "version": "5381-",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "5381-",
+          "impliedFormat": 1
+        },
         "version": "5381-",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -107,10 +119,26 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 738
+  "size": 816
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/a.js: *new*
   {}
@@ -205,7 +233,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.js","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-3042032780-declare const x: 10;\n","affectsGlobalScope":true},"5381-"],"root":[2,3],"options":{"allowJs":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.js","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-3042032780-declare const x: 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"5381-","impliedFormat":1}],"root":[2,3],"options":{"allowJs":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,25 +247,34 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.js": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-3042032780-declare const x: 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-3042032780-declare const x: 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "5381-",
+          "impliedFormat": 1
+        },
         "version": "5381-",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -271,7 +308,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 844
+  "size": 910
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted.js b/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted.js
index 8c73c6f51cd96..2c71e60666cf8 100644
--- a/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted.js
+++ b/tests/baselines/reference/tsbuildWatch/noEmit/does-not-go-in-loop-when-watching-when-no-files-are-emitted.js
@@ -47,6 +47,22 @@ Output::
 
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/a.js: *new*
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error-with-incremental.js b/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error-with-incremental.js
index af24a7ee6958b..15ef43f85351a 100644
--- a/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error-with-incremental.js
+++ b/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error-with-incremental.js
@@ -64,7 +64,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","signature":false},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","signature":false},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":false}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"changeFileSet":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","signature":false,"affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","signature":false,"impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","signature":false,"impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":false,"impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"changeFileSet":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -85,31 +85,39 @@ Output::
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
           "signature": false,
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
         "original": {
           "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": false
+          "signature": false,
+          "impliedFormat": 1
         },
-        "version": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -142,10 +150,32 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1080
+  "size": 1152
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/noEmitOnError/shared/types/db.ts: *new*
   {}
@@ -271,7 +301,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -291,31 +321,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -348,7 +389,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1086
+  "size": 1170
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -438,7 +479,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -458,31 +499,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -533,7 +585,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1245
+  "size": 1329
 }
 
 
@@ -649,7 +701,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -669,31 +721,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -726,7 +789,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1161
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error.js b/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error.js
index ee2be6d9cf1b8..9866d09e9331d 100644
--- a/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error.js
+++ b/tests/baselines/reference/tsbuildWatch/noEmitOnError/does-not-emit-any-files-on-error.js
@@ -64,6 +64,28 @@ Output::
 
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/noEmitOnError/shared/types/db.ts: *new*
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/creates-solution-in-watch-mode.js b/tests/baselines/reference/tsbuildWatch/programUpdates/creates-solution-in-watch-mode.js
index 4c3393458512a..6a7baa2ad17fa 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/creates-solution-in-watch-mode.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/creates-solution-in-watch-mode.js
@@ -137,7 +137,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,36 +152,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +221,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -239,7 +247,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,27 +268,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -310,7 +332,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -331,7 +353,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -357,31 +379,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -415,10 +456,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/incremental-updates-in-verbose-mode.js b/tests/baselines/reference/tsbuildWatch/programUpdates/incremental-updates-in-verbose-mode.js
index 01053f2dac4f9..eb27b223790cc 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/incremental-updates-in-verbose-mode.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/incremental-updates-in-verbose-mode.js
@@ -154,7 +154,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -169,36 +169,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -230,7 +238,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -256,7 +264,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -277,27 +285,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -327,7 +349,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -348,7 +370,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -374,31 +396,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -432,10 +473,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -613,7 +676,7 @@ function someFn() { }
 //# sourceMappingURL=index.js.map
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-12844299335-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nfunction someFn() { }","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-12844299335-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nfunction someFn() { }","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -634,27 +697,41 @@ function someFn() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-12844299335-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nfunction someFn() { }",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-12844299335-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nfunction someFn() { }",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -684,7 +761,7 @@ function someFn() { }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1422
+  "size": 1518
 }
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo] file changed its modified time
@@ -774,7 +851,7 @@ export declare function someFn(): void;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-5790226213-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nexport function someFn() { }","signature":"-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-5790226213-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nexport function someFn() { }","signature":"-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -795,27 +872,41 @@ export declare function someFn(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-5790226213-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nexport function someFn() { }",
-          "signature": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n"
+          "signature": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-5790226213-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nexport function someFn() { }",
-        "signature": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n"
+        "signature": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -845,7 +936,7 @@ export declare function someFn(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1469
+  "size": 1565
 }
 
 
@@ -867,7 +958,7 @@ Output::
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -893,31 +984,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n",
-        "signature": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n"
+        "signature": "-8742548750-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function someFn(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -951,7 +1061,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1579
+  "size": 1705
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-file-with-no-error-changes.js b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-file-with-no-error-changes.js
index 8b473b642659c..c2c3e69b1f9fd 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-file-with-no-error-changes.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-file-with-no-error-changes.js
@@ -77,7 +77,7 @@ export declare class myClass {
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -91,27 +91,33 @@ export declare class myClass {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,10 +142,28 @@ export declare class myClass {
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1076
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/solution/app/fileWithError.ts: *new*
   {}
@@ -210,7 +234,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","signature":"7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"emitSignatures":[[2,"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"]],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","signature":"7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"emitSignatures":[[2,"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"]],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -224,27 +248,33 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-          "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."
+          "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.",
+          "impliedFormat": 1
         },
         "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-        "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."
+        "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -281,7 +311,7 @@ Output::
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1306
+  "size": 1360
 }
 
 
@@ -337,7 +367,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","signature":"7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."},{"version":"-10959532701-export class myClass2 { }","signature":"-8459626297-export declare class myClass2 {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[[2,"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"],[3,"-7432826827-export declare class myClass {\n}\n"]],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","signature":"7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.","impliedFormat":1},{"version":"-10959532701-export class myClass2 { }","signature":"-8459626297-export declare class myClass2 {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[[2,"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"],[3,"-7432826827-export declare class myClass {\n}\n"]],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -351,27 +381,33 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-          "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."
+          "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.",
+          "impliedFormat": 1
         },
         "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-        "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."
+        "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-10959532701-export class myClass2 { }",
-          "signature": "-8459626297-export declare class myClass2 {\n}\n"
+          "signature": "-8459626297-export declare class myClass2 {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-10959532701-export class myClass2 { }",
-        "signature": "-8459626297-export declare class myClass2 {\n}\n"
+        "signature": "-8459626297-export declare class myClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -416,7 +452,7 @@ Output::
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1364
+  "size": 1418
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-fixing-errors-only-changed-file-is-emitted.js b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-fixing-errors-only-changed-file-is-emitted.js
index c4407f2c9b9cf..9b86f3d932b52 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-fixing-errors-only-changed-file-is-emitted.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/introduceError/when-fixing-errors-only-changed-file-is-emitted.js
@@ -77,7 +77,7 @@ export declare class myClass {
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -91,27 +91,33 @@ export declare class myClass {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,10 +142,28 @@ export declare class myClass {
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1076
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/solution/app/fileWithError.ts: *new*
   {}
@@ -210,7 +234,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","signature":"7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"emitSignatures":[[2,"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"]],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","signature":"7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"emitSignatures":[[2,"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"]],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -224,27 +248,33 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-          "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."
+          "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.",
+          "impliedFormat": 1
         },
         "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-        "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected."
+        "signature": "7927555551-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n        p: number;\n    };\n};\n(11,16)Error4094: Property 'p' of exported class expression may not be private or protected.",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -281,7 +311,7 @@ Output::
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1306
+  "size": 1360
 }
 
 
@@ -336,7 +366,7 @@ Output::
 
 //// [/user/username/projects/solution/app/fileWithError.js] file written with same contents
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -350,27 +380,33 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -395,7 +431,7 @@ Output::
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1076
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-file-with-no-error-changes.js b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-file-with-no-error-changes.js
index bb388ef368e0a..62b97c9b87ca3 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-file-with-no-error-changes.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-file-with-no-error-changes.js
@@ -45,7 +45,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -59,23 +59,32 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
+        "original": {
+          "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
+          "impliedFormat": 1
+        },
         "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-        "signature": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };"
+        "signature": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -113,10 +122,28 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 915
+  "size": 981
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/solution/app/fileWithError.ts: *new*
   {}
@@ -184,7 +211,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",{"version":"-10959532701-export class myClass2 { }","signature":"-8459626297-export declare class myClass2 {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","impliedFormat":1},{"version":"-10959532701-export class myClass2 { }","signature":"-8459626297-export declare class myClass2 {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -198,23 +225,32 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
+        "original": {
+          "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
+          "impliedFormat": 1
+        },
         "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-        "signature": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };"
+        "signature": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-10959532701-export class myClass2 { }",
-          "signature": "-8459626297-export declare class myClass2 {\n}\n"
+          "signature": "-8459626297-export declare class myClass2 {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-10959532701-export class myClass2 { }",
-        "signature": "-8459626297-export declare class myClass2 {\n}\n"
+        "signature": "-8459626297-export declare class myClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -252,7 +288,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 917
+  "size": 983
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-fixing-error-files-all-files-are-emitted.js b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-fixing-error-files-all-files-are-emitted.js
index 906391bb58477..a88334957ab31 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-fixing-error-files-all-files-are-emitted.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/declarationEmitErrors/when-fixing-error-files-all-files-are-emitted.js
@@ -45,7 +45,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -59,23 +59,32 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
+        "original": {
+          "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
+          "impliedFormat": 1
+        },
         "version": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
-        "signature": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };"
+        "signature": "-8103865863-export var myClassWithError = class {\n        tags() { }\n        private p = 12\n    };",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -113,10 +122,28 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 915
+  "size": 981
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/solution/app/fileWithError.ts: *new*
   {}
@@ -182,7 +209,7 @@ Output::
 
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./filewitherror.ts","./filewithouterror.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };","signature":"6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n","impliedFormat":1},{"version":"-11785903855-export class myClass { }","signature":"-7432826827-export declare class myClass {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./fileWithoutError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/solution/app/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -196,27 +223,33 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./filewitherror.ts": {
         "original": {
           "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+          "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "-8106435186-export var myClassWithError = class {\n        tags() { }\n        \n    };",
-        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n"
+        "signature": "6892461904-export declare var myClassWithError: {\n    new (): {\n        tags(): void;\n    };\n};\n",
+        "impliedFormat": "commonjs"
       },
       "./filewithouterror.ts": {
         "original": {
           "version": "-11785903855-export class myClass { }",
-          "signature": "-7432826827-export declare class myClass {\n}\n"
+          "signature": "-7432826827-export declare class myClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11785903855-export class myClass { }",
-        "signature": "-7432826827-export declare class myClass {\n}\n"
+        "signature": "-7432826827-export declare class myClass {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -241,7 +274,7 @@ Output::
     "latestChangedDtsFile": "./fileWithoutError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1076
 }
 
 //// [/user/username/projects/solution/app/fileWithError.js]
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-not-used.js b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-not-used.js
index d84e8199fe81d..b5a7ee179fdf9 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-not-used.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-not-used.js
@@ -137,7 +137,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,36 +152,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +221,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -239,7 +247,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,27 +268,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -310,7 +332,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -331,7 +353,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -357,31 +379,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -415,10 +456,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -576,7 +639,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,[4,[{"file":"./index.ts","start":178,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]],"affectedFilesPendingEmit":[4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,[4,[{"file":"./index.ts","start":178,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]],"affectedFilesPendingEmit":[4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -597,27 +660,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -665,7 +742,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1590
+  "size": 1686
 }
 
 
@@ -734,7 +811,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./index.ts","start":183,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./index.ts","start":183,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -749,36 +826,44 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -828,7 +913,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1562
+  "size": 1634
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-passed-on-command-line.js b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-passed-on-command-line.js
index eebed1ccad7ef..f7cc70d551070 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-passed-on-command-line.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/reportErrors/when-preserveWatchOutput-is-passed-on-command-line.js
@@ -136,7 +136,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -151,36 +151,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -212,7 +220,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -238,7 +246,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,27 +267,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -309,7 +331,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -330,7 +352,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -356,31 +378,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -414,10 +455,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -577,7 +640,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,[4,[{"file":"./index.ts","start":178,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]],"affectedFilesPendingEmit":[4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,[4,[{"file":"./index.ts","start":178,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]],"affectedFilesPendingEmit":[4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -598,27 +661,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-5319769398-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n\nlet y: string = 10;",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -666,7 +743,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1590
+  "size": 1686
 }
 
 
@@ -735,7 +812,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./index.ts","start":183,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./index.ts","start":183,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -750,36 +827,44 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15390729096-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nlet x: string = 10;",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -829,7 +914,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1562
+  "size": 1634
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit-with-outDir-specified.js b/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit-with-outDir-specified.js
index 627abdad6ae25..7436a9681aee0 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit-with-outDir-specified.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit-with-outDir-specified.js
@@ -136,7 +136,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../anothermodule.ts","../index.ts","../some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../anothermodule.ts","../index.ts","../some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -151,36 +151,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,10 +218,28 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1322
+  "size": 1394
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -294,7 +320,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../anothermodule.ts","../file3.ts","../index.ts","../some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./file3.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../anothermodule.ts","../file3.ts","../index.ts","../some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./file3.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -310,44 +336,54 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../file3.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "../index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -379,7 +415,7 @@ Output::
     "latestChangedDtsFile": "./file3.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1443
+  "size": 1533
 }
 
 //// [/user/username/projects/sample1/core/outDir/file3.js]
@@ -394,6 +430,24 @@ export declare const y = 10;
 
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts:
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit.js b/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit.js
index 7a325732088f4..1109980a2f202 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit.js
@@ -144,7 +144,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -159,36 +159,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,10 +228,28 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -306,7 +332,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./file3.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./file3.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./file3.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./file3.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -322,44 +348,54 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./file3.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -393,7 +429,7 @@ Output::
     "latestChangedDtsFile": "./file3.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1490
+  "size": 1580
 }
 
 //// [/user/username/projects/sample1/core/file3.js]
@@ -411,6 +447,24 @@ export declare const y = 10;
 //# sourceMappingURL=file3.d.ts.map
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts:
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/tsbuildinfo-has-error.js b/tests/baselines/reference/tsbuildWatch/programUpdates/tsbuildinfo-has-error.js
index eb6ac0896daf4..6850357961eda 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/tsbuildinfo-has-error.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/tsbuildinfo-has-error.js
@@ -33,7 +33,7 @@ Output::
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../a/lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../a/lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/main.js]
 "use strict";
@@ -53,15 +53,22 @@ exports.x = 10;
       "../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -77,10 +84,22 @@ exports.x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 602
+  "size": 650
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/src/package.json: *new*
+  {"pollingInterval":2000}
+/src/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /src/project/main.ts: *new*
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/verify-building-references-watches-only-those-projects.js b/tests/baselines/reference/tsbuildWatch/programUpdates/verify-building-references-watches-only-those-projects.js
index 8437d79427d98..73cd08708aebe 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/verify-building-references-watches-only-those-projects.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/verify-building-references-watches-only-those-projects.js
@@ -137,7 +137,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,36 +152,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +221,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -239,7 +247,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,27 +268,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -310,10 +332,30 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/watches-config-files-that-are-not-present.js b/tests/baselines/reference/tsbuildWatch/programUpdates/watches-config-files-that-are-not-present.js
index 754b6f6305b0e..08946c16b1308 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/watches-config-files-that-are-not-present.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/watches-config-files-that-are-not-present.js
@@ -123,7 +123,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -138,36 +138,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -199,13 +207,29 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 
 PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/logic/tsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
@@ -283,6 +307,24 @@ Output::
 sysLog:: /user/username/projects/sample1/logic/tsconfig.json:: Changing watcher to PresentFileSystemEntryWatcher
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
+
 PolledWatches *deleted*::
 /user/username/projects/sample1/logic/tsconfig.json:
   {"pollingInterval":2000}
@@ -343,7 +385,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -364,27 +406,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -414,10 +470,28 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts:
   {}
@@ -510,7 +584,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -536,31 +610,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -594,7 +687,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/when-referenced-project-change-introduces-error-in-the-down-stream-project-and-then-fixes-it.js b/tests/baselines/reference/tsbuildWatch/programUpdates/when-referenced-project-change-introduces-error-in-the-down-stream-project-and-then-fixes-it.js
index 245854b6d6adb..b350a56b81034 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/when-referenced-project-change-introduces-error-in-the-down-stream-project-and-then-fixes-it.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/when-referenced-project-change-introduces-error-in-the-down-stream-project-and-then-fixes-it.js
@@ -77,7 +77,7 @@ export {};
 
 
 //// [/user/username/projects/sample1/Library/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./library.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}","signature":"-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./library.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./library.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}","signature":"-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./library.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/Library/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -90,19 +90,23 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./library.ts": {
         "original": {
           "version": "5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}",
-          "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"
+          "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}",
-        "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"
+        "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -122,7 +126,7 @@ export {};
     "latestChangedDtsFile": "./library.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 980
+  "size": 1016
 }
 
 //// [/user/username/projects/sample1/App/app.js]
@@ -133,6 +137,26 @@ var library_1 = require("../Library/library");
 
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/App/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/Library/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/App/app.ts: *new*
   {}
@@ -246,7 +270,7 @@ export {};
 
 
 //// [/user/username/projects/sample1/Library/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./library.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-9741349880-\ninterface SomeObject\n{\n    message2: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message2: \"new Object\"\n    };\n}","signature":"1956297931-interface SomeObject {\n    message2: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./library.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./library.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9741349880-\ninterface SomeObject\n{\n    message2: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message2: \"new Object\"\n    };\n}","signature":"1956297931-interface SomeObject {\n    message2: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./library.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/Library/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,19 +283,23 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./library.ts": {
         "original": {
           "version": "-9741349880-\ninterface SomeObject\n{\n    message2: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message2: \"new Object\"\n    };\n}",
-          "signature": "1956297931-interface SomeObject {\n    message2: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"
+          "signature": "1956297931-interface SomeObject {\n    message2: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "-9741349880-\ninterface SomeObject\n{\n    message2: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message2: \"new Object\"\n    };\n}",
-        "signature": "1956297931-interface SomeObject {\n    message2: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"
+        "signature": "1956297931-interface SomeObject {\n    message2: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -291,7 +319,7 @@ export {};
     "latestChangedDtsFile": "./library.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 982
+  "size": 1018
 }
 
 
@@ -412,7 +440,7 @@ export {};
 
 
 //// [/user/username/projects/sample1/Library/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./library.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}","signature":"-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./library.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./library.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}","signature":"-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./library.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/Library/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -425,19 +453,23 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./library.ts": {
         "original": {
           "version": "5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}",
-          "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"
+          "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n",
+          "impliedFormat": 1
         },
         "version": "5256469508-\ninterface SomeObject\n{\n    message: string;\n}\n\nexport function createSomeObject(): SomeObject\n{\n    return {\n        message: \"new Object\"\n    };\n}",
-        "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n"
+        "signature": "-18933614215-interface SomeObject {\n    message: string;\n}\nexport declare function createSomeObject(): SomeObject;\nexport {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -457,7 +489,7 @@ export {};
     "latestChangedDtsFile": "./library.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 980
+  "size": 1016
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/builds-when-new-file-is-added,-and-its-subsequent-updates.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/builds-when-new-file-is-added,-and-its-subsequent-updates.js
index bbc7495a1cc68..fcd6fb6f8d94d 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/builds-when-new-file-is-added,-and-its-subsequent-updates.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/builds-when-new-file-is-added,-and-its-subsequent-updates.js
@@ -135,7 +135,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,36 +150,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -209,7 +217,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1321
+  "size": 1393
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -235,7 +243,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -256,27 +264,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -306,7 +328,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -327,7 +349,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -353,31 +375,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -411,10 +452,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -556,7 +619,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-16320201030-export const newFileConst = 30;","signature":"-22941483372-export declare const newFileConst = 30;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-16320201030-export const newFileConst = 30;","signature":"-22941483372-export declare const newFileConst = 30;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -572,44 +635,54 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./newfile.ts": {
         "original": {
           "version": "-16320201030-export const newFileConst = 30;",
-          "signature": "-22941483372-export declare const newFileConst = 30;\n"
+          "signature": "-22941483372-export declare const newFileConst = 30;\n",
+          "impliedFormat": 1
         },
         "version": "-16320201030-export const newFileConst = 30;",
-        "signature": "-22941483372-export declare const newFileConst = 30;\n"
+        "signature": "-22941483372-export declare const newFileConst = 30;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -641,7 +714,7 @@ Output::
     "latestChangedDtsFile": "./newfile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1468
+  "size": 1558
 }
 
 //// [/user/username/projects/sample1/core/newfile.js]
@@ -656,6 +729,28 @@ export declare const newFileConst = 30;
 
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts:
   {}
@@ -801,7 +896,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-9703836816-export const newFileConst = 30;\nexport class someClass2 { }","signature":"-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9703836816-export const newFileConst = 30;\nexport class someClass2 { }","signature":"-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -817,44 +912,54 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./newfile.ts": {
         "original": {
           "version": "-9703836816-export const newFileConst = 30;\nexport class someClass2 { }",
-          "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n"
+          "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-9703836816-export const newFileConst = 30;\nexport class someClass2 { }",
-        "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n"
+        "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -886,7 +991,7 @@ Output::
     "latestChangedDtsFile": "./newfile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1534
+  "size": 1624
 }
 
 //// [/user/username/projects/sample1/core/newfile.js]
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/change-builds-changes-and-reports-found-errors-message.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/change-builds-changes-and-reports-found-errors-message.js
index 56730c3ac0199..bfd8fb05dacfe 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/change-builds-changes-and-reports-found-errors-message.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/change-builds-changes-and-reports-found-errors-message.js
@@ -135,7 +135,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,36 +150,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -209,7 +217,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1321
+  "size": 1393
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -235,7 +243,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -256,27 +264,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -306,7 +328,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -327,7 +349,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -353,31 +375,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -411,10 +452,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -585,7 +648,7 @@ export declare class someClass {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -600,36 +663,44 @@ export declare class someClass {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -659,7 +730,7 @@ export declare class someClass {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1386
+  "size": 1458
 }
 
 
@@ -709,7 +780,7 @@ Output::
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -730,27 +801,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -780,12 +865,12 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1435
+  "size": 1531
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -811,31 +896,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -869,7 +973,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1575
+  "size": 1701
 }
 
 
@@ -971,7 +1075,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -986,36 +1090,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1045,7 +1157,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1321
+  "size": 1393
 }
 
 
@@ -1095,7 +1207,7 @@ Output::
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1116,27 +1228,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1166,12 +1292,12 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1197,31 +1323,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1255,7 +1400,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
@@ -1375,7 +1520,7 @@ export declare class someClass2 {
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }","signature":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }","signature":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1390,36 +1535,44 @@ export declare class someClass2 {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }",
-          "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+          "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }",
-        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1449,7 +1602,7 @@ export declare class someClass2 {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1453
+  "size": 1525
 }
 
 
@@ -1499,7 +1652,7 @@ Output::
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1520,27 +1673,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
-        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1570,12 +1737,12 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1473
+  "size": 1569
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1601,31 +1768,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
-        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1659,7 +1845,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1613
+  "size": 1739
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/non-local-change-does-not-start-build-of-referencing-projects.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/non-local-change-does-not-start-build-of-referencing-projects.js
index 5ef3851993dac..4ac84b88930c7 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/non-local-change-does-not-start-build-of-referencing-projects.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-circular-project-reference/non-local-change-does-not-start-build-of-referencing-projects.js
@@ -135,7 +135,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,36 +150,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -209,7 +217,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1321
+  "size": 1393
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -235,7 +243,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -256,27 +264,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -306,7 +328,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -327,7 +349,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -353,31 +375,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -411,10 +452,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -574,7 +637,7 @@ function foo() { }
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -589,36 +652,44 @@ function foo() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -648,7 +719,7 @@ function foo() { }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1340
+  "size": 1412
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-outFile-and-non-local-change.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-outFile-and-non-local-change.js
index af91f719d2a62..21f26ce8f1f7e 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-outFile-and-non-local-change.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-outFile-and-non-local-change.js
@@ -61,7 +61,7 @@ declare function foo(): number;
 
 
 //// [/user/username/projects/sample1/core/index.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","5450201652-function foo() { return 10; }"],"root":[2],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"517738360-declare function foo(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"5450201652-function foo() { return 10; }","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"517738360-declare function foo(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/index.tsbuildinfo.readable.baseline.txt]
 {
@@ -71,8 +71,22 @@ declare function foo(): number;
       "./index.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./index.ts": "5450201652-function foo() { return 10; }"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./index.ts": {
+        "original": {
+          "version": "5450201652-function foo() { return 10; }",
+          "impliedFormat": 1
+        },
+        "version": "5450201652-function foo() { return 10; }",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -89,7 +103,7 @@ declare function foo(): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 697
+  "size": 757
 }
 
 //// [/user/username/projects/sample1/logic/index.js]
@@ -102,7 +116,7 @@ declare function bar(): number;
 
 
 //// [/user/username/projects/sample1/logic/index.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","./index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","517738360-declare function foo(): number;\n","5542925109-function bar() { return foo() + 1 };"],"root":[3],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"1113083433-declare function bar(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"517738360-declare function foo(): number;\n","impliedFormat":1},{"version":"5542925109-function bar() { return foo() + 1 };","impliedFormat":1}],"root":[3],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"1113083433-declare function bar(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/index.tsbuildinfo.readable.baseline.txt]
 {
@@ -113,9 +127,30 @@ declare function bar(): number;
       "./index.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "../core/index.d.ts": "517738360-declare function foo(): number;\n",
-      "./index.ts": "5542925109-function bar() { return foo() + 1 };"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "../core/index.d.ts": {
+        "original": {
+          "version": "517738360-declare function foo(): number;\n",
+          "impliedFormat": 1
+        },
+        "version": "517738360-declare function foo(): number;\n",
+        "impliedFormat": "commonjs"
+      },
+      "./index.ts": {
+        "original": {
+          "version": "5542925109-function bar() { return foo() + 1 };",
+          "impliedFormat": 1
+        },
+        "version": "5542925109-function bar() { return foo() + 1 };",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -132,10 +167,30 @@ declare function bar(): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 772
+  "size": 862
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/index.ts: *new*
   {}
@@ -225,7 +280,7 @@ declare function myFunc(): number;
 
 
 //// [/user/username/projects/sample1/core/index.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-3957203077-function foo() { return 10; }\nfunction myFunc() { return 10; }"],"root":[2],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-3957203077-function foo() { return 10; }\nfunction myFunc() { return 10; }","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/index.tsbuildinfo.readable.baseline.txt]
 {
@@ -235,8 +290,22 @@ declare function myFunc(): number;
       "./index.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./index.ts": "-3957203077-function foo() { return 10; }\nfunction myFunc() { return 10; }"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./index.ts": {
+        "original": {
+          "version": "-3957203077-function foo() { return 10; }\nfunction myFunc() { return 10; }",
+          "impliedFormat": 1
+        },
+        "version": "-3957203077-function foo() { return 10; }\nfunction myFunc() { return 10; }",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -253,7 +322,7 @@ declare function myFunc(): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 769
+  "size": 829
 }
 
 
@@ -297,7 +366,7 @@ Output::
 
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/index.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","./index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n","5542925109-function bar() { return foo() + 1 };"],"root":[3],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"1113083433-declare function bar(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n","impliedFormat":1},{"version":"5542925109-function bar() { return foo() + 1 };","impliedFormat":1}],"root":[3],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"1113083433-declare function bar(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/index.tsbuildinfo.readable.baseline.txt]
 {
@@ -308,9 +377,30 @@ Output::
       "./index.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "../core/index.d.ts": "2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n",
-      "./index.ts": "5542925109-function bar() { return foo() + 1 };"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "../core/index.d.ts": {
+        "original": {
+          "version": "2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n",
+          "impliedFormat": 1
+        },
+        "version": "2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n",
+        "impliedFormat": "commonjs"
+      },
+      "./index.ts": {
+        "original": {
+          "version": "5542925109-function bar() { return foo() + 1 };",
+          "impliedFormat": 1
+        },
+        "version": "5542925109-function bar() { return foo() + 1 };",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -327,7 +417,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 809
+  "size": 899
 }
 
 
@@ -383,7 +473,7 @@ function myFunc() { return 100; }
 
 
 //// [/user/username/projects/sample1/core/index.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-6034018805-function foo() { return 10; }\nfunction myFunc() { return 100; }"],"root":[2],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-6034018805-function foo() { return 10; }\nfunction myFunc() { return 100; }","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"outFile":"./index.js"},"outSignature":"2172043225-declare function foo(): number;\ndeclare function myFunc(): number;\n","latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/index.tsbuildinfo.readable.baseline.txt]
 {
@@ -393,8 +483,22 @@ function myFunc() { return 100; }
       "./index.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./index.ts": "-6034018805-function foo() { return 10; }\nfunction myFunc() { return 100; }"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./index.ts": {
+        "original": {
+          "version": "-6034018805-function foo() { return 10; }\nfunction myFunc() { return 100; }",
+          "impliedFormat": 1
+        },
+        "version": "-6034018805-function foo() { return 10; }\nfunction myFunc() { return 100; }",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -411,7 +515,7 @@ function myFunc() { return 100; }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 770
+  "size": 830
 }
 
 //// [/user/username/projects/sample1/logic/index.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/builds-when-new-file-is-added,-and-its-subsequent-updates.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/builds-when-new-file-is-added,-and-its-subsequent-updates.js
index 147cb14a9b0e2..9abca4e60468b 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/builds-when-new-file-is-added,-and-its-subsequent-updates.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/builds-when-new-file-is-added,-and-its-subsequent-updates.js
@@ -137,7 +137,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,36 +152,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +221,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -239,7 +247,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,27 +268,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -310,7 +332,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -331,7 +353,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -357,31 +379,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -415,10 +456,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -562,7 +625,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-16320201030-export const newFileConst = 30;","signature":"-22941483372-export declare const newFileConst = 30;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-16320201030-export const newFileConst = 30;","signature":"-22941483372-export declare const newFileConst = 30;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -578,44 +641,54 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./newfile.ts": {
         "original": {
           "version": "-16320201030-export const newFileConst = 30;",
-          "signature": "-22941483372-export declare const newFileConst = 30;\n"
+          "signature": "-22941483372-export declare const newFileConst = 30;\n",
+          "impliedFormat": 1
         },
         "version": "-16320201030-export const newFileConst = 30;",
-        "signature": "-22941483372-export declare const newFileConst = 30;\n"
+        "signature": "-22941483372-export declare const newFileConst = 30;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -649,7 +722,7 @@ Output::
     "latestChangedDtsFile": "./newfile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1517
+  "size": 1607
 }
 
 //// [/user/username/projects/sample1/core/newfile.js]
@@ -667,6 +740,28 @@ export declare const newFileConst = 30;
 //# sourceMappingURL=newfile.d.ts.map
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts:
   {}
@@ -814,7 +909,7 @@ Output::
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-9703836816-export const newFileConst = 30;\nexport class someClass2 { }","signature":"-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./newfile.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9703836816-export const newFileConst = 30;\nexport class someClass2 { }","signature":"-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./newfile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -830,44 +925,54 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./newfile.ts": {
         "original": {
           "version": "-9703836816-export const newFileConst = 30;\nexport class someClass2 { }",
-          "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n"
+          "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-9703836816-export const newFileConst = 30;\nexport class someClass2 { }",
-        "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n"
+        "signature": "-12384508924-export declare const newFileConst = 30;\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -901,7 +1006,7 @@ Output::
     "latestChangedDtsFile": "./newfile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1583
+  "size": 1673
 }
 
 //// [/user/username/projects/sample1/core/newfile.js]
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/change-builds-changes-and-reports-found-errors-message.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/change-builds-changes-and-reports-found-errors-message.js
index 3e5bbdd5bdb14..f3eb8a23fe9a0 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/change-builds-changes-and-reports-found-errors-message.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/change-builds-changes-and-reports-found-errors-message.js
@@ -137,7 +137,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,36 +152,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +221,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -239,7 +247,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,27 +268,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -310,7 +332,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -331,7 +353,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -357,31 +379,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -415,10 +456,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -594,7 +657,7 @@ export declare class someClass {
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }","signature":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -609,36 +672,44 @@ export declare class someClass {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+          "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14927048853-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -670,7 +741,7 @@ export declare class someClass {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1435
+  "size": 1507
 }
 
 
@@ -722,7 +793,7 @@ Output::
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -743,27 +814,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -793,12 +878,12 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1435
+  "size": 1531
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -824,31 +909,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
-        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n"
+        "signature": "-2489663677-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -882,7 +986,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1575
+  "size": 1701
 }
 
 
@@ -987,7 +1091,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1002,36 +1106,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1063,7 +1175,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 
@@ -1115,7 +1227,7 @@ Output::
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1136,27 +1248,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1186,12 +1312,12 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1217,31 +1343,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1275,7 +1420,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
@@ -1398,7 +1543,7 @@ export declare class someClass2 {
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }","signature":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }","signature":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1413,36 +1558,44 @@ export declare class someClass2 {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }",
-          "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+          "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-10455689311-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nexport class someClass { }\nexport class someClass2 { }",
-        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1474,7 +1627,7 @@ export declare class someClass2 {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1502
+  "size": 1574
 }
 
 
@@ -1526,7 +1679,7 @@ Output::
 //// [/user/username/projects/sample1/logic/index.js.map] file written with same contents
 //// [/user/username/projects/sample1/logic/index.js] file written with same contents
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1547,27 +1700,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
-        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1597,12 +1764,12 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1473
+  "size": 1569
 }
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1628,31 +1795,50 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
-        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n"
+        "signature": "-1938481101-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\nexport declare class someClass {\n}\nexport declare class someClass2 {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1686,7 +1872,7 @@ Output::
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1613
+  "size": 1739
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/non-local-change-does-not-start-build-of-referencing-projects.js b/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/non-local-change-does-not-start-build-of-referencing-projects.js
index 8b136a7848033..e591136e6db0c 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/non-local-change-does-not-start-build-of-referencing-projects.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/with-simple-project-reference-graph/non-local-change-does-not-start-build-of-referencing-projects.js
@@ -137,7 +137,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -152,36 +152,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +221,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -239,7 +247,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -260,27 +268,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -310,7 +332,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -331,7 +353,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -357,31 +379,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -415,10 +456,32 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/sample1/core/anotherModule.ts: *new*
   {}
@@ -581,7 +644,7 @@ function foo() { }
 
 //// [/user/username/projects/sample1/core/index.d.ts.map] file written with same contents
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -596,36 +659,44 @@ function foo() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-9422301372-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n\nfunction foo() { }",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -657,7 +728,7 @@ function foo() { }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1389
+  "size": 1461
 }
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/works-correctly-when-project-with-extended-config-is-removed.js b/tests/baselines/reference/tsbuildWatch/programUpdates/works-correctly-when-project-with-extended-config-is-removed.js
index 504b7f36cc9eb..ed0734daae4da 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/works-correctly-when-project-with-extended-config-is-removed.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/works-correctly-when-project-with-extended-config-is-removed.js
@@ -114,7 +114,7 @@ declare let y: number;
 
 
 //// [/a/b/project1.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project1.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -128,31 +128,37 @@ declare let y: number;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile1.ts": {
         "original": {
           "version": "2167136208-let x = 1",
           "signature": "2842409786-declare let x: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2167136208-let x = 1",
         "signature": "2842409786-declare let x: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile2.ts": {
         "original": {
           "version": "2168322129-let y = 1",
           "signature": "784887931-declare let y: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2168322129-let y = 1",
         "signature": "784887931-declare let y: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -178,7 +184,7 @@ declare let y: number;
     "latestChangedDtsFile": "./commonFile2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 899
+  "size": 953
 }
 
 //// [/a/b/other.js]
@@ -191,7 +197,7 @@ declare let z: number;
 
 
 //// [/a/b/project2.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project2.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -204,21 +210,25 @@ declare let z: number;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "2874288940-let z = 0;",
           "signature": "-1272633924-declare let z: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2874288940-let z = 0;",
         "signature": "-1272633924-declare let z: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -239,10 +249,20 @@ declare let z: number;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 
+PolledWatches::
+/a/b/package.json: *new*
+  {"pollingInterval":2000}
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/alpha.tsconfig.json: *new*
   {}
@@ -341,6 +361,16 @@ Output::
 
 
 
+PolledWatches::
+/a/b/package.json:
+  {"pollingInterval":2000}
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/alpha.tsconfig.json:
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/works-when-noUnusedParameters-changes-to-false.js b/tests/baselines/reference/tsbuildWatch/programUpdates/works-when-noUnusedParameters-changes-to-false.js
index 7713fe330d889..069b194e28f33 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/works-when-noUnusedParameters-changes-to-false.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/works-when-noUnusedParameters-changes-to-false.js
@@ -39,6 +39,22 @@ Output::
 
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/index.ts: *new*
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/programUpdates/works-with-extended-source-files.js b/tests/baselines/reference/tsbuildWatch/programUpdates/works-with-extended-source-files.js
index ecf15535878fd..3fbe56ab35b3d 100644
--- a/tests/baselines/reference/tsbuildWatch/programUpdates/works-with-extended-source-files.js
+++ b/tests/baselines/reference/tsbuildWatch/programUpdates/works-with-extended-source-files.js
@@ -136,7 +136,7 @@ declare let y: number;
 
 
 //// [/a/b/project1.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project1.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -150,31 +150,37 @@ declare let y: number;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile1.ts": {
         "original": {
           "version": "2167136208-let x = 1",
           "signature": "2842409786-declare let x: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2167136208-let x = 1",
         "signature": "2842409786-declare let x: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile2.ts": {
         "original": {
           "version": "2168322129-let y = 1",
           "signature": "784887931-declare let y: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2168322129-let y = 1",
         "signature": "784887931-declare let y: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -199,7 +205,7 @@ declare let y: number;
     "latestChangedDtsFile": "./commonFile2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 885
+  "size": 939
 }
 
 //// [/a/b/other.js]
@@ -211,7 +217,7 @@ declare let z: number;
 
 
 //// [/a/b/project2.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project2.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -224,21 +230,25 @@ declare let z: number;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "2874288940-let z = 0;",
           "signature": "-1272633924-declare let z: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2874288940-let z = 0;",
         "signature": "-1272633924-declare let z: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -258,7 +268,7 @@ declare let z: number;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 742
+  "size": 778
 }
 
 //// [/a/b/other2.js]
@@ -266,6 +276,16 @@ var k = 0;
 
 
 
+PolledWatches::
+/a/b/package.json: *new*
+  {"pollingInterval":2000}
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/alpha.tsconfig.json: *new*
   {}
@@ -402,7 +422,7 @@ var y = 1;
 
 
 //// [/a/b/project1.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project1.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -416,31 +436,37 @@ var y = 1;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile1.ts": {
         "original": {
           "version": "2167136208-let x = 1",
           "signature": "2842409786-declare let x: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2167136208-let x = 1",
         "signature": "2842409786-declare let x: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile2.ts": {
         "original": {
           "version": "2168322129-let y = 1",
           "signature": "784887931-declare let y: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2168322129-let y = 1",
         "signature": "784887931-declare let y: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -466,7 +492,7 @@ var y = 1;
     "latestChangedDtsFile": "./commonFile2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 899
+  "size": 953
 }
 
 
@@ -522,7 +548,7 @@ var z = 0;
 
 
 //// [/a/b/project2.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project2.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -535,21 +561,25 @@ var z = 0;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "2874288940-let z = 0;",
           "signature": "-1272633924-declare let z: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2874288940-let z = 0;",
         "signature": "-1272633924-declare let z: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -570,7 +600,7 @@ var z = 0;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 
@@ -633,7 +663,7 @@ var z = 0;
 
 
 //// [/a/b/project2.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"strict":false},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2874288940-let z = 0;","signature":"-1272633924-declare let z: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"strict":false},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project2.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -646,21 +676,25 @@ var z = 0;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "2874288940-let z = 0;",
           "signature": "-1272633924-declare let z: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2874288940-let z = 0;",
         "signature": "-1272633924-declare let z: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -681,7 +715,7 @@ var z = 0;
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 757
+  "size": 793
 }
 
 
@@ -749,6 +783,16 @@ var k = 0;
 
 
 
+PolledWatches::
+/a/b/package.json:
+  {"pollingInterval":2000}
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/alpha.tsconfig.json:
   {}
@@ -849,7 +893,7 @@ var y = 1;
 
 
 //// [/a/b/project1.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./commonfile1.ts","./commonfile2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2167136208-let x = 1","signature":"2842409786-declare let x: number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2168322129-let y = 1","signature":"784887931-declare let y: number;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,3,1],"latestChangedDtsFile":"./commonFile2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/a/b/project1.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -863,31 +907,37 @@ var y = 1;
       "../lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile1.ts": {
         "original": {
           "version": "2167136208-let x = 1",
           "signature": "2842409786-declare let x: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2167136208-let x = 1",
         "signature": "2842409786-declare let x: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./commonfile2.ts": {
         "original": {
           "version": "2168322129-let y = 1",
           "signature": "784887931-declare let y: number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2168322129-let y = 1",
         "signature": "784887931-declare let y: number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -912,7 +962,7 @@ var y = 1;
     "latestChangedDtsFile": "./commonFile2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 885
+  "size": 939
 }
 
 
@@ -1101,6 +1151,16 @@ Output::
 
 //// [/a/b/other2.js] file changed its modified time
 
+PolledWatches::
+/a/b/package.json:
+  {"pollingInterval":2000}
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/alpha.tsconfig.json:
   {}
diff --git a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-23-projects-in-a-solution.js b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-23-projects-in-a-solution.js
index c95037d17d3b3..dbce9a742ad36 100644
--- a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-23-projects-in-a-solution.js
+++ b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-23-projects-in-a-solution.js
@@ -569,7 +569,7 @@ export declare const pkg0 = 0;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -582,19 +582,23 @@ export declare const pkg0 = 0;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10197922616-export const pkg0 = 0;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-10197922616-export const pkg0 = 0;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -614,7 +618,7 @@ export declare const pkg0 = 0;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg1/index.js]
@@ -629,7 +633,7 @@ export declare const pkg1 = 1;
 
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -642,19 +646,23 @@ export declare const pkg1 = 1;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10158787190-export const pkg1 = 1;",
-          "signature": "-3530363548-export declare const pkg1 = 1;\n"
+          "signature": "-3530363548-export declare const pkg1 = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10158787190-export const pkg1 = 1;",
-        "signature": "-3530363548-export declare const pkg1 = 1;\n"
+        "signature": "-3530363548-export declare const pkg1 = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -674,7 +682,7 @@ export declare const pkg1 = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg2/index.js]
@@ -689,7 +697,7 @@ export declare const pkg2 = 2;
 
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -702,19 +710,23 @@ export declare const pkg2 = 2;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14414619060-export const pkg2 = 2;",
-          "signature": "-6533861786-export declare const pkg2 = 2;\n"
+          "signature": "-6533861786-export declare const pkg2 = 2;\n",
+          "impliedFormat": 1
         },
         "version": "-14414619060-export const pkg2 = 2;",
-        "signature": "-6533861786-export declare const pkg2 = 2;\n"
+        "signature": "-6533861786-export declare const pkg2 = 2;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -734,7 +746,7 @@ export declare const pkg2 = 2;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg3/index.js]
@@ -749,7 +761,7 @@ export declare const pkg3 = 3;
 
 
 //// [/user/username/projects/myproject/pkg3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14375483634-export const pkg3 = 3;","signature":"-5242392728-export declare const pkg3 = 3;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14375483634-export const pkg3 = 3;","signature":"-5242392728-export declare const pkg3 = 3;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -762,19 +774,23 @@ export declare const pkg3 = 3;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14375483634-export const pkg3 = 3;",
-          "signature": "-5242392728-export declare const pkg3 = 3;\n"
+          "signature": "-5242392728-export declare const pkg3 = 3;\n",
+          "impliedFormat": 1
         },
         "version": "-14375483634-export const pkg3 = 3;",
-        "signature": "-5242392728-export declare const pkg3 = 3;\n"
+        "signature": "-5242392728-export declare const pkg3 = 3;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -794,7 +810,7 @@ export declare const pkg3 = 3;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg4/index.js]
@@ -809,7 +825,7 @@ export declare const pkg4 = 4;
 
 
 //// [/user/username/projects/myproject/pkg4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14336348208-export const pkg4 = 4;","signature":"-3950923670-export declare const pkg4 = 4;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14336348208-export const pkg4 = 4;","signature":"-3950923670-export declare const pkg4 = 4;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -822,19 +838,23 @@ export declare const pkg4 = 4;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14336348208-export const pkg4 = 4;",
-          "signature": "-3950923670-export declare const pkg4 = 4;\n"
+          "signature": "-3950923670-export declare const pkg4 = 4;\n",
+          "impliedFormat": 1
         },
         "version": "-14336348208-export const pkg4 = 4;",
-        "signature": "-3950923670-export declare const pkg4 = 4;\n"
+        "signature": "-3950923670-export declare const pkg4 = 4;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -854,7 +874,7 @@ export declare const pkg4 = 4;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg5/index.js]
@@ -869,7 +889,7 @@ export declare const pkg5 = 5;
 
 
 //// [/user/username/projects/myproject/pkg5/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14297212782-export const pkg5 = 5;","signature":"-2659454612-export declare const pkg5 = 5;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14297212782-export const pkg5 = 5;","signature":"-2659454612-export declare const pkg5 = 5;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg5/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -882,19 +902,23 @@ export declare const pkg5 = 5;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14297212782-export const pkg5 = 5;",
-          "signature": "-2659454612-export declare const pkg5 = 5;\n"
+          "signature": "-2659454612-export declare const pkg5 = 5;\n",
+          "impliedFormat": 1
         },
         "version": "-14297212782-export const pkg5 = 5;",
-        "signature": "-2659454612-export declare const pkg5 = 5;\n"
+        "signature": "-2659454612-export declare const pkg5 = 5;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -914,7 +938,7 @@ export declare const pkg5 = 5;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg6/index.js]
@@ -929,7 +953,7 @@ export declare const pkg6 = 6;
 
 
 //// [/user/username/projects/myproject/pkg6/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14258077356-export const pkg6 = 6;","signature":"-5662952850-export declare const pkg6 = 6;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14258077356-export const pkg6 = 6;","signature":"-5662952850-export declare const pkg6 = 6;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg6/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -942,19 +966,23 @@ export declare const pkg6 = 6;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14258077356-export const pkg6 = 6;",
-          "signature": "-5662952850-export declare const pkg6 = 6;\n"
+          "signature": "-5662952850-export declare const pkg6 = 6;\n",
+          "impliedFormat": 1
         },
         "version": "-14258077356-export const pkg6 = 6;",
-        "signature": "-5662952850-export declare const pkg6 = 6;\n"
+        "signature": "-5662952850-export declare const pkg6 = 6;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -974,7 +1002,7 @@ export declare const pkg6 = 6;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg7/index.js]
@@ -989,7 +1017,7 @@ export declare const pkg7 = 7;
 
 
 //// [/user/username/projects/myproject/pkg7/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14218941930-export const pkg7 = 7;","signature":"-4371483792-export declare const pkg7 = 7;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14218941930-export const pkg7 = 7;","signature":"-4371483792-export declare const pkg7 = 7;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg7/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1002,19 +1030,23 @@ export declare const pkg7 = 7;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14218941930-export const pkg7 = 7;",
-          "signature": "-4371483792-export declare const pkg7 = 7;\n"
+          "signature": "-4371483792-export declare const pkg7 = 7;\n",
+          "impliedFormat": 1
         },
         "version": "-14218941930-export const pkg7 = 7;",
-        "signature": "-4371483792-export declare const pkg7 = 7;\n"
+        "signature": "-4371483792-export declare const pkg7 = 7;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1034,7 +1066,7 @@ export declare const pkg7 = 7;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg8/index.js]
@@ -1049,7 +1081,7 @@ export declare const pkg8 = 8;
 
 
 //// [/user/username/projects/myproject/pkg8/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14179806504-export const pkg8 = 8;","signature":"-3080014734-export declare const pkg8 = 8;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14179806504-export const pkg8 = 8;","signature":"-3080014734-export declare const pkg8 = 8;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg8/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1062,19 +1094,23 @@ export declare const pkg8 = 8;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14179806504-export const pkg8 = 8;",
-          "signature": "-3080014734-export declare const pkg8 = 8;\n"
+          "signature": "-3080014734-export declare const pkg8 = 8;\n",
+          "impliedFormat": 1
         },
         "version": "-14179806504-export const pkg8 = 8;",
-        "signature": "-3080014734-export declare const pkg8 = 8;\n"
+        "signature": "-3080014734-export declare const pkg8 = 8;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1094,7 +1130,7 @@ export declare const pkg8 = 8;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg9/index.js]
@@ -1109,7 +1145,7 @@ export declare const pkg9 = 9;
 
 
 //// [/user/username/projects/myproject/pkg9/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14140671078-export const pkg9 = 9;","signature":"-6083512972-export declare const pkg9 = 9;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14140671078-export const pkg9 = 9;","signature":"-6083512972-export declare const pkg9 = 9;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg9/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1122,19 +1158,23 @@ export declare const pkg9 = 9;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14140671078-export const pkg9 = 9;",
-          "signature": "-6083512972-export declare const pkg9 = 9;\n"
+          "signature": "-6083512972-export declare const pkg9 = 9;\n",
+          "impliedFormat": 1
         },
         "version": "-14140671078-export const pkg9 = 9;",
-        "signature": "-6083512972-export declare const pkg9 = 9;\n"
+        "signature": "-6083512972-export declare const pkg9 = 9;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1154,7 +1194,7 @@ export declare const pkg9 = 9;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg10/index.js]
@@ -1169,7 +1209,7 @@ export declare const pkg10 = 10;
 
 
 //// [/user/username/projects/myproject/pkg10/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-9585933846-export const pkg10 = 10;","signature":"-3553269308-export declare const pkg10 = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9585933846-export const pkg10 = 10;","signature":"-3553269308-export declare const pkg10 = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg10/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1182,19 +1222,23 @@ export declare const pkg10 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9585933846-export const pkg10 = 10;",
-          "signature": "-3553269308-export declare const pkg10 = 10;\n"
+          "signature": "-3553269308-export declare const pkg10 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-9585933846-export const pkg10 = 10;",
-        "signature": "-3553269308-export declare const pkg10 = 10;\n"
+        "signature": "-3553269308-export declare const pkg10 = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1214,7 +1258,7 @@ export declare const pkg10 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 755
+  "size": 791
 }
 
 //// [/user/username/projects/myproject/pkg11/index.js]
@@ -1229,7 +1273,7 @@ export declare const pkg11 = 11;
 
 
 //// [/user/username/projects/myproject/pkg11/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8294465844-export const pkg11 = 11;","signature":"410469094-export declare const pkg11 = 11;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8294465844-export const pkg11 = 11;","signature":"410469094-export declare const pkg11 = 11;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg11/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1242,19 +1286,23 @@ export declare const pkg11 = 11;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-8294465844-export const pkg11 = 11;",
-          "signature": "410469094-export declare const pkg11 = 11;\n"
+          "signature": "410469094-export declare const pkg11 = 11;\n",
+          "impliedFormat": 1
         },
         "version": "-8294465844-export const pkg11 = 11;",
-        "signature": "410469094-export declare const pkg11 = 11;\n"
+        "signature": "410469094-export declare const pkg11 = 11;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1274,7 +1322,7 @@ export declare const pkg11 = 11;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 753
+  "size": 789
 }
 
 //// [/user/username/projects/myproject/pkg12/index.js]
@@ -1289,7 +1337,7 @@ export declare const pkg12 = 12;
 
 
 //// [/user/username/projects/myproject/pkg12/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7002997842-export const pkg12 = 12;","signature":"-4215727096-export declare const pkg12 = 12;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7002997842-export const pkg12 = 12;","signature":"-4215727096-export declare const pkg12 = 12;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg12/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1302,19 +1350,23 @@ export declare const pkg12 = 12;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7002997842-export const pkg12 = 12;",
-          "signature": "-4215727096-export declare const pkg12 = 12;\n"
+          "signature": "-4215727096-export declare const pkg12 = 12;\n",
+          "impliedFormat": 1
         },
         "version": "-7002997842-export const pkg12 = 12;",
-        "signature": "-4215727096-export declare const pkg12 = 12;\n"
+        "signature": "-4215727096-export declare const pkg12 = 12;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1334,7 +1386,7 @@ export declare const pkg12 = 12;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 755
+  "size": 791
 }
 
 //// [/user/username/projects/myproject/pkg13/index.js]
@@ -1349,7 +1401,7 @@ export declare const pkg13 = 13;
 
 
 //// [/user/username/projects/myproject/pkg13/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10006497136-export const pkg13 = 13;","signature":"-4546955990-export declare const pkg13 = 13;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10006497136-export const pkg13 = 13;","signature":"-4546955990-export declare const pkg13 = 13;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg13/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1362,19 +1414,23 @@ export declare const pkg13 = 13;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10006497136-export const pkg13 = 13;",
-          "signature": "-4546955990-export declare const pkg13 = 13;\n"
+          "signature": "-4546955990-export declare const pkg13 = 13;\n",
+          "impliedFormat": 1
         },
         "version": "-10006497136-export const pkg13 = 13;",
-        "signature": "-4546955990-export declare const pkg13 = 13;\n"
+        "signature": "-4546955990-export declare const pkg13 = 13;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1394,7 +1450,7 @@ export declare const pkg13 = 13;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 //// [/user/username/projects/myproject/pkg14/index.js]
@@ -1409,7 +1465,7 @@ export declare const pkg14 = 14;
 
 
 //// [/user/username/projects/myproject/pkg14/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-8715029134-export const pkg14 = 14;","signature":"-583217588-export declare const pkg14 = 14;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8715029134-export const pkg14 = 14;","signature":"-583217588-export declare const pkg14 = 14;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg14/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1422,19 +1478,23 @@ export declare const pkg14 = 14;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-8715029134-export const pkg14 = 14;",
-          "signature": "-583217588-export declare const pkg14 = 14;\n"
+          "signature": "-583217588-export declare const pkg14 = 14;\n",
+          "impliedFormat": 1
         },
         "version": "-8715029134-export const pkg14 = 14;",
-        "signature": "-583217588-export declare const pkg14 = 14;\n"
+        "signature": "-583217588-export declare const pkg14 = 14;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1454,7 +1514,7 @@ export declare const pkg14 = 14;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 754
+  "size": 790
 }
 
 //// [/user/username/projects/myproject/pkg15/index.js]
@@ -1469,7 +1529,7 @@ export declare const pkg15 = 15;
 
 
 //// [/user/username/projects/myproject/pkg15/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7423561132-export const pkg15 = 15;","signature":"-5209413778-export declare const pkg15 = 15;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7423561132-export const pkg15 = 15;","signature":"-5209413778-export declare const pkg15 = 15;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg15/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1482,19 +1542,23 @@ export declare const pkg15 = 15;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7423561132-export const pkg15 = 15;",
-          "signature": "-5209413778-export declare const pkg15 = 15;\n"
+          "signature": "-5209413778-export declare const pkg15 = 15;\n",
+          "impliedFormat": 1
         },
         "version": "-7423561132-export const pkg15 = 15;",
-        "signature": "-5209413778-export declare const pkg15 = 15;\n"
+        "signature": "-5209413778-export declare const pkg15 = 15;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1514,7 +1578,7 @@ export declare const pkg15 = 15;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 755
+  "size": 791
 }
 
 //// [/user/username/projects/myproject/pkg16/index.js]
@@ -1529,7 +1593,7 @@ export declare const pkg16 = 16;
 
 
 //// [/user/username/projects/myproject/pkg16/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-6132093130-export const pkg16 = 16;","signature":"-1245675376-export declare const pkg16 = 16;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6132093130-export const pkg16 = 16;","signature":"-1245675376-export declare const pkg16 = 16;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg16/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1542,19 +1606,23 @@ export declare const pkg16 = 16;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6132093130-export const pkg16 = 16;",
-          "signature": "-1245675376-export declare const pkg16 = 16;\n"
+          "signature": "-1245675376-export declare const pkg16 = 16;\n",
+          "impliedFormat": 1
         },
         "version": "-6132093130-export const pkg16 = 16;",
-        "signature": "-1245675376-export declare const pkg16 = 16;\n"
+        "signature": "-1245675376-export declare const pkg16 = 16;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1574,7 +1642,7 @@ export declare const pkg16 = 16;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 755
+  "size": 791
 }
 
 //// [/user/username/projects/myproject/pkg17/index.js]
@@ -1589,7 +1657,7 @@ export declare const pkg17 = 17;
 
 
 //// [/user/username/projects/myproject/pkg17/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-17725527016-export const pkg17 = 17;","signature":"-1576904270-export declare const pkg17 = 17;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17725527016-export const pkg17 = 17;","signature":"-1576904270-export declare const pkg17 = 17;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg17/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1602,19 +1670,23 @@ export declare const pkg17 = 17;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-17725527016-export const pkg17 = 17;",
-          "signature": "-1576904270-export declare const pkg17 = 17;\n"
+          "signature": "-1576904270-export declare const pkg17 = 17;\n",
+          "impliedFormat": 1
         },
         "version": "-17725527016-export const pkg17 = 17;",
-        "signature": "-1576904270-export declare const pkg17 = 17;\n"
+        "signature": "-1576904270-export declare const pkg17 = 17;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1634,7 +1706,7 @@ export declare const pkg17 = 17;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 //// [/user/username/projects/myproject/pkg18/index.js]
@@ -1649,7 +1721,7 @@ export declare const pkg18 = 18;
 
 
 //// [/user/username/projects/myproject/pkg18/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-16434059014-export const pkg18 = 18;","signature":"-1908133164-export declare const pkg18 = 18;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16434059014-export const pkg18 = 18;","signature":"-1908133164-export declare const pkg18 = 18;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg18/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1662,19 +1734,23 @@ export declare const pkg18 = 18;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-16434059014-export const pkg18 = 18;",
-          "signature": "-1908133164-export declare const pkg18 = 18;\n"
+          "signature": "-1908133164-export declare const pkg18 = 18;\n",
+          "impliedFormat": 1
         },
         "version": "-16434059014-export const pkg18 = 18;",
-        "signature": "-1908133164-export declare const pkg18 = 18;\n"
+        "signature": "-1908133164-export declare const pkg18 = 18;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1694,7 +1770,7 @@ export declare const pkg18 = 18;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 //// [/user/username/projects/myproject/pkg19/index.js]
@@ -1709,7 +1785,7 @@ export declare const pkg19 = 19;
 
 
 //// [/user/username/projects/myproject/pkg19/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-15142591012-export const pkg19 = 19;","signature":"-2239362058-export declare const pkg19 = 19;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15142591012-export const pkg19 = 19;","signature":"-2239362058-export declare const pkg19 = 19;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg19/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1722,19 +1798,23 @@ export declare const pkg19 = 19;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15142591012-export const pkg19 = 19;",
-          "signature": "-2239362058-export declare const pkg19 = 19;\n"
+          "signature": "-2239362058-export declare const pkg19 = 19;\n",
+          "impliedFormat": 1
         },
         "version": "-15142591012-export const pkg19 = 19;",
-        "signature": "-2239362058-export declare const pkg19 = 19;\n"
+        "signature": "-2239362058-export declare const pkg19 = 19;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1754,7 +1834,7 @@ export declare const pkg19 = 19;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 //// [/user/username/projects/myproject/pkg20/index.js]
@@ -1769,7 +1849,7 @@ export declare const pkg20 = 20;
 
 
 //// [/user/username/projects/myproject/pkg20/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14212130036-export const pkg20 = 20;","signature":"-5893888218-export declare const pkg20 = 20;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14212130036-export const pkg20 = 20;","signature":"-5893888218-export declare const pkg20 = 20;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg20/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1782,19 +1862,23 @@ export declare const pkg20 = 20;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14212130036-export const pkg20 = 20;",
-          "signature": "-5893888218-export declare const pkg20 = 20;\n"
+          "signature": "-5893888218-export declare const pkg20 = 20;\n",
+          "impliedFormat": 1
         },
         "version": "-14212130036-export const pkg20 = 20;",
-        "signature": "-5893888218-export declare const pkg20 = 20;\n"
+        "signature": "-5893888218-export declare const pkg20 = 20;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1814,7 +1898,7 @@ export declare const pkg20 = 20;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 //// [/user/username/projects/myproject/pkg21/index.js]
@@ -1829,7 +1913,7 @@ export declare const pkg21 = 21;
 
 
 //// [/user/username/projects/myproject/pkg21/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-17215629330-export const pkg21 = 21;","signature":"-6225117112-export declare const pkg21 = 21;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17215629330-export const pkg21 = 21;","signature":"-6225117112-export declare const pkg21 = 21;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg21/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1842,19 +1926,23 @@ export declare const pkg21 = 21;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-17215629330-export const pkg21 = 21;",
-          "signature": "-6225117112-export declare const pkg21 = 21;\n"
+          "signature": "-6225117112-export declare const pkg21 = 21;\n",
+          "impliedFormat": 1
         },
         "version": "-17215629330-export const pkg21 = 21;",
-        "signature": "-6225117112-export declare const pkg21 = 21;\n"
+        "signature": "-6225117112-export declare const pkg21 = 21;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1874,7 +1962,7 @@ export declare const pkg21 = 21;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
+  "size": 792
 }
 
 //// [/user/username/projects/myproject/pkg22/index.js]
@@ -1889,7 +1977,7 @@ export declare const pkg22 = 22;
 
 
 //// [/user/username/projects/myproject/pkg22/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-15924161328-export const pkg22 = 22;","signature":"-6556346006-export declare const pkg22 = 22;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15924161328-export const pkg22 = 22;","signature":"-6556346006-export declare const pkg22 = 22;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg22/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1902,19 +1990,23 @@ export declare const pkg22 = 22;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15924161328-export const pkg22 = 22;",
-          "signature": "-6556346006-export declare const pkg22 = 22;\n"
+          "signature": "-6556346006-export declare const pkg22 = 22;\n",
+          "impliedFormat": 1
         },
         "version": "-15924161328-export const pkg22 = 22;",
-        "signature": "-6556346006-export declare const pkg22 = 22;\n"
+        "signature": "-6556346006-export declare const pkg22 = 22;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1934,9 +2026,71 @@ export declare const pkg22 = 22;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 756
-}
-
+  "size": 792
+}
+
+
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg10/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg11/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg12/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg13/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg14/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg15/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg16/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg17/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg18/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg19/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg20/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg21/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg22/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg3/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg4/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg5/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg6/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg7/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg8/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg9/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/pkg0/index.ts: *new*
@@ -2690,7 +2844,7 @@ var someConst2 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2703,19 +2857,23 @@ var someConst2 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2735,7 +2893,7 @@ var someConst2 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 773
+  "size": 809
 }
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo] file changed its modified time
@@ -2829,7 +2987,7 @@ export declare const someConst = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2842,19 +3000,23 @@ export declare const someConst = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+          "impliedFormat": 1
         },
         "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2874,7 +3036,7 @@ export declare const someConst = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 838
+  "size": 874
 }
 
 
@@ -3568,7 +3730,7 @@ export declare const someConst3 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -3581,19 +3743,23 @@ export declare const someConst3 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;",
-          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;",
-        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -3613,7 +3779,7 @@ export declare const someConst3 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 908
+  "size": 944
 }
 
 
@@ -3995,7 +4161,7 @@ var someConst4 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -4008,19 +4174,23 @@ var someConst4 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;",
-          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;",
-        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -4040,7 +4210,7 @@ var someConst4 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 930
+  "size": 966
 }
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo] file changed its modified time
@@ -4262,7 +4432,7 @@ export declare const someConst5 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"14710086947-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;export const someConst5 = 10;","signature":"4956132399-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\nexport declare const someConst5 = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"14710086947-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;export const someConst5 = 10;","signature":"4956132399-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\nexport declare const someConst5 = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -4275,19 +4445,23 @@ export declare const someConst5 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "14710086947-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;export const someConst5 = 10;",
-          "signature": "4956132399-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\nexport declare const someConst5 = 10;\n"
+          "signature": "4956132399-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\nexport declare const someConst5 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "14710086947-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;export const someConst5 = 10;",
-        "signature": "4956132399-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\nexport declare const someConst5 = 10;\n"
+        "signature": "4956132399-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\nexport declare const someConst5 = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -4307,7 +4481,7 @@ export declare const someConst5 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 996
+  "size": 1032
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-3-projects-in-a-solution.js b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-3-projects-in-a-solution.js
index 6e30c865cdf9c..36dd5d973de0d 100644
--- a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-3-projects-in-a-solution.js
+++ b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-3-projects-in-a-solution.js
@@ -109,7 +109,7 @@ export declare const pkg0 = 0;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -122,19 +122,23 @@ export declare const pkg0 = 0;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10197922616-export const pkg0 = 0;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-10197922616-export const pkg0 = 0;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -154,7 +158,7 @@ export declare const pkg0 = 0;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg1/index.js]
@@ -169,7 +173,7 @@ export declare const pkg1 = 1;
 
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,19 +186,23 @@ export declare const pkg1 = 1;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10158787190-export const pkg1 = 1;",
-          "signature": "-3530363548-export declare const pkg1 = 1;\n"
+          "signature": "-3530363548-export declare const pkg1 = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10158787190-export const pkg1 = 1;",
-        "signature": "-3530363548-export declare const pkg1 = 1;\n"
+        "signature": "-3530363548-export declare const pkg1 = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -214,7 +222,7 @@ export declare const pkg1 = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg2/index.js]
@@ -229,7 +237,7 @@ export declare const pkg2 = 2;
 
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -242,19 +250,23 @@ export declare const pkg2 = 2;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14414619060-export const pkg2 = 2;",
-          "signature": "-6533861786-export declare const pkg2 = 2;\n"
+          "signature": "-6533861786-export declare const pkg2 = 2;\n",
+          "impliedFormat": 1
         },
         "version": "-14414619060-export const pkg2 = 2;",
-        "signature": "-6533861786-export declare const pkg2 = 2;\n"
+        "signature": "-6533861786-export declare const pkg2 = 2;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -274,10 +286,32 @@ export declare const pkg2 = 2;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/pkg0/index.ts: *new*
   {}
@@ -410,7 +444,7 @@ var someConst2 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -423,19 +457,23 @@ var someConst2 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -455,7 +493,7 @@ var someConst2 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 773
+  "size": 809
 }
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo] file changed its modified time
@@ -529,7 +567,7 @@ export declare const someConst = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -542,19 +580,23 @@ export declare const someConst = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+          "impliedFormat": 1
         },
         "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -574,7 +616,7 @@ export declare const someConst = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 838
+  "size": 874
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-5-projects-in-a-solution.js b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-5-projects-in-a-solution.js
index a61413b6250c5..93e73b5a86907 100644
--- a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-5-projects-in-a-solution.js
+++ b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-5-projects-in-a-solution.js
@@ -155,7 +155,7 @@ export declare const pkg0 = 0;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,19 +168,23 @@ export declare const pkg0 = 0;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10197922616-export const pkg0 = 0;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-10197922616-export const pkg0 = 0;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -200,7 +204,7 @@ export declare const pkg0 = 0;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg1/index.js]
@@ -215,7 +219,7 @@ export declare const pkg1 = 1;
 
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -228,19 +232,23 @@ export declare const pkg1 = 1;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10158787190-export const pkg1 = 1;",
-          "signature": "-3530363548-export declare const pkg1 = 1;\n"
+          "signature": "-3530363548-export declare const pkg1 = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10158787190-export const pkg1 = 1;",
-        "signature": "-3530363548-export declare const pkg1 = 1;\n"
+        "signature": "-3530363548-export declare const pkg1 = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -260,7 +268,7 @@ export declare const pkg1 = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg2/index.js]
@@ -275,7 +283,7 @@ export declare const pkg2 = 2;
 
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -288,19 +296,23 @@ export declare const pkg2 = 2;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14414619060-export const pkg2 = 2;",
-          "signature": "-6533861786-export declare const pkg2 = 2;\n"
+          "signature": "-6533861786-export declare const pkg2 = 2;\n",
+          "impliedFormat": 1
         },
         "version": "-14414619060-export const pkg2 = 2;",
-        "signature": "-6533861786-export declare const pkg2 = 2;\n"
+        "signature": "-6533861786-export declare const pkg2 = 2;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -320,7 +332,7 @@ export declare const pkg2 = 2;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg3/index.js]
@@ -335,7 +347,7 @@ export declare const pkg3 = 3;
 
 
 //// [/user/username/projects/myproject/pkg3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14375483634-export const pkg3 = 3;","signature":"-5242392728-export declare const pkg3 = 3;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14375483634-export const pkg3 = 3;","signature":"-5242392728-export declare const pkg3 = 3;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -348,19 +360,23 @@ export declare const pkg3 = 3;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14375483634-export const pkg3 = 3;",
-          "signature": "-5242392728-export declare const pkg3 = 3;\n"
+          "signature": "-5242392728-export declare const pkg3 = 3;\n",
+          "impliedFormat": 1
         },
         "version": "-14375483634-export const pkg3 = 3;",
-        "signature": "-5242392728-export declare const pkg3 = 3;\n"
+        "signature": "-5242392728-export declare const pkg3 = 3;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -380,7 +396,7 @@ export declare const pkg3 = 3;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg4/index.js]
@@ -395,7 +411,7 @@ export declare const pkg4 = 4;
 
 
 //// [/user/username/projects/myproject/pkg4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14336348208-export const pkg4 = 4;","signature":"-3950923670-export declare const pkg4 = 4;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14336348208-export const pkg4 = 4;","signature":"-3950923670-export declare const pkg4 = 4;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -408,19 +424,23 @@ export declare const pkg4 = 4;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14336348208-export const pkg4 = 4;",
-          "signature": "-3950923670-export declare const pkg4 = 4;\n"
+          "signature": "-3950923670-export declare const pkg4 = 4;\n",
+          "impliedFormat": 1
         },
         "version": "-14336348208-export const pkg4 = 4;",
-        "signature": "-3950923670-export declare const pkg4 = 4;\n"
+        "signature": "-3950923670-export declare const pkg4 = 4;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -440,10 +460,36 @@ export declare const pkg4 = 4;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg3/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg4/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/pkg0/index.ts: *new*
   {}
@@ -638,7 +684,7 @@ var someConst2 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -651,19 +697,23 @@ var someConst2 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -683,7 +733,7 @@ var someConst2 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 773
+  "size": 809
 }
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo] file changed its modified time
@@ -759,7 +809,7 @@ export declare const someConst = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -772,19 +822,23 @@ export declare const someConst = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+          "impliedFormat": 1
         },
         "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -804,7 +858,7 @@ export declare const someConst = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 838
+  "size": 874
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-8-projects-in-a-solution.js b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-8-projects-in-a-solution.js
index abeab693da813..3283c01fd0f65 100644
--- a/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-8-projects-in-a-solution.js
+++ b/tests/baselines/reference/tsbuildWatch/projectsBuilding/when-there-are-8-projects-in-a-solution.js
@@ -224,7 +224,7 @@ export declare const pkg0 = 0;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10197922616-export const pkg0 = 0;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -237,19 +237,23 @@ export declare const pkg0 = 0;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10197922616-export const pkg0 = 0;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-10197922616-export const pkg0 = 0;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -269,7 +273,7 @@ export declare const pkg0 = 0;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg1/index.js]
@@ -284,7 +288,7 @@ export declare const pkg1 = 1;
 
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10158787190-export const pkg1 = 1;","signature":"-3530363548-export declare const pkg1 = 1;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -297,19 +301,23 @@ export declare const pkg1 = 1;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-10158787190-export const pkg1 = 1;",
-          "signature": "-3530363548-export declare const pkg1 = 1;\n"
+          "signature": "-3530363548-export declare const pkg1 = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10158787190-export const pkg1 = 1;",
-        "signature": "-3530363548-export declare const pkg1 = 1;\n"
+        "signature": "-3530363548-export declare const pkg1 = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -329,7 +337,7 @@ export declare const pkg1 = 1;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg2/index.js]
@@ -344,7 +352,7 @@ export declare const pkg2 = 2;
 
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14414619060-export const pkg2 = 2;","signature":"-6533861786-export declare const pkg2 = 2;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -357,19 +365,23 @@ export declare const pkg2 = 2;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14414619060-export const pkg2 = 2;",
-          "signature": "-6533861786-export declare const pkg2 = 2;\n"
+          "signature": "-6533861786-export declare const pkg2 = 2;\n",
+          "impliedFormat": 1
         },
         "version": "-14414619060-export const pkg2 = 2;",
-        "signature": "-6533861786-export declare const pkg2 = 2;\n"
+        "signature": "-6533861786-export declare const pkg2 = 2;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -389,7 +401,7 @@ export declare const pkg2 = 2;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg3/index.js]
@@ -404,7 +416,7 @@ export declare const pkg3 = 3;
 
 
 //// [/user/username/projects/myproject/pkg3/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14375483634-export const pkg3 = 3;","signature":"-5242392728-export declare const pkg3 = 3;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14375483634-export const pkg3 = 3;","signature":"-5242392728-export declare const pkg3 = 3;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg3/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -417,19 +429,23 @@ export declare const pkg3 = 3;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14375483634-export const pkg3 = 3;",
-          "signature": "-5242392728-export declare const pkg3 = 3;\n"
+          "signature": "-5242392728-export declare const pkg3 = 3;\n",
+          "impliedFormat": 1
         },
         "version": "-14375483634-export const pkg3 = 3;",
-        "signature": "-5242392728-export declare const pkg3 = 3;\n"
+        "signature": "-5242392728-export declare const pkg3 = 3;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -449,7 +465,7 @@ export declare const pkg3 = 3;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg4/index.js]
@@ -464,7 +480,7 @@ export declare const pkg4 = 4;
 
 
 //// [/user/username/projects/myproject/pkg4/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14336348208-export const pkg4 = 4;","signature":"-3950923670-export declare const pkg4 = 4;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14336348208-export const pkg4 = 4;","signature":"-3950923670-export declare const pkg4 = 4;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg4/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -477,19 +493,23 @@ export declare const pkg4 = 4;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14336348208-export const pkg4 = 4;",
-          "signature": "-3950923670-export declare const pkg4 = 4;\n"
+          "signature": "-3950923670-export declare const pkg4 = 4;\n",
+          "impliedFormat": 1
         },
         "version": "-14336348208-export const pkg4 = 4;",
-        "signature": "-3950923670-export declare const pkg4 = 4;\n"
+        "signature": "-3950923670-export declare const pkg4 = 4;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -509,7 +529,7 @@ export declare const pkg4 = 4;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg5/index.js]
@@ -524,7 +544,7 @@ export declare const pkg5 = 5;
 
 
 //// [/user/username/projects/myproject/pkg5/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14297212782-export const pkg5 = 5;","signature":"-2659454612-export declare const pkg5 = 5;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14297212782-export const pkg5 = 5;","signature":"-2659454612-export declare const pkg5 = 5;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg5/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -537,19 +557,23 @@ export declare const pkg5 = 5;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14297212782-export const pkg5 = 5;",
-          "signature": "-2659454612-export declare const pkg5 = 5;\n"
+          "signature": "-2659454612-export declare const pkg5 = 5;\n",
+          "impliedFormat": 1
         },
         "version": "-14297212782-export const pkg5 = 5;",
-        "signature": "-2659454612-export declare const pkg5 = 5;\n"
+        "signature": "-2659454612-export declare const pkg5 = 5;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -569,7 +593,7 @@ export declare const pkg5 = 5;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg6/index.js]
@@ -584,7 +608,7 @@ export declare const pkg6 = 6;
 
 
 //// [/user/username/projects/myproject/pkg6/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14258077356-export const pkg6 = 6;","signature":"-5662952850-export declare const pkg6 = 6;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14258077356-export const pkg6 = 6;","signature":"-5662952850-export declare const pkg6 = 6;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg6/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -597,19 +621,23 @@ export declare const pkg6 = 6;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14258077356-export const pkg6 = 6;",
-          "signature": "-5662952850-export declare const pkg6 = 6;\n"
+          "signature": "-5662952850-export declare const pkg6 = 6;\n",
+          "impliedFormat": 1
         },
         "version": "-14258077356-export const pkg6 = 6;",
-        "signature": "-5662952850-export declare const pkg6 = 6;\n"
+        "signature": "-5662952850-export declare const pkg6 = 6;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -629,7 +657,7 @@ export declare const pkg6 = 6;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 //// [/user/username/projects/myproject/pkg7/index.js]
@@ -644,7 +672,7 @@ export declare const pkg7 = 7;
 
 
 //// [/user/username/projects/myproject/pkg7/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14218941930-export const pkg7 = 7;","signature":"-4371483792-export declare const pkg7 = 7;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14218941930-export const pkg7 = 7;","signature":"-4371483792-export declare const pkg7 = 7;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg7/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -657,19 +685,23 @@ export declare const pkg7 = 7;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-14218941930-export const pkg7 = 7;",
-          "signature": "-4371483792-export declare const pkg7 = 7;\n"
+          "signature": "-4371483792-export declare const pkg7 = 7;\n",
+          "impliedFormat": 1
         },
         "version": "-14218941930-export const pkg7 = 7;",
-        "signature": "-4371483792-export declare const pkg7 = 7;\n"
+        "signature": "-4371483792-export declare const pkg7 = 7;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -689,10 +721,42 @@ export declare const pkg7 = 7;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 752
+  "size": 788
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg3/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg4/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg5/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg6/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg7/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/pkg0/index.ts: *new*
   {}
@@ -980,7 +1044,7 @@ var someConst2 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7839887915-export const pkg0 = 0;const someConst2 = 10;","signature":"-4821832606-export declare const pkg0 = 0;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -993,19 +1057,23 @@ var someConst2 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-          "signature": "-4821832606-export declare const pkg0 = 0;\n"
+          "signature": "-4821832606-export declare const pkg0 = 0;\n",
+          "impliedFormat": 1
         },
         "version": "-7839887915-export const pkg0 = 0;const someConst2 = 10;",
-        "signature": "-4821832606-export declare const pkg0 = 0;\n"
+        "signature": "-4821832606-export declare const pkg0 = 0;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1025,7 +1093,7 @@ var someConst2 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 773
+  "size": 809
 }
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo] file changed its modified time
@@ -1104,7 +1172,7 @@ export declare const someConst = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;","signature":"-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1117,19 +1185,23 @@ export declare const someConst = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+          "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+          "impliedFormat": 1
         },
         "version": "1748855762-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;",
-        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n"
+        "signature": "-6216230055-export declare const pkg0 = 0;\nexport declare const someConst = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1149,7 +1221,7 @@ export declare const someConst = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 838
+  "size": 874
 }
 
 
@@ -1429,7 +1501,7 @@ export declare const someConst3 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1442,19 +1514,23 @@ export declare const someConst3 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;",
-          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "10857255042-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;",
-        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1474,7 +1550,7 @@ export declare const someConst3 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 908
+  "size": 944
 }
 
 
@@ -1698,7 +1774,7 @@ var someConst4 = 10;
 
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;","signature":"-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/pkg0/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1711,19 +1787,23 @@ var someConst4 = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;",
-          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+          "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+          "impliedFormat": 1
         },
         "version": "27277091473-export const pkg0 = 0;const someConst2 = 10;export const someConst = 10;export const someConst3 = 10;const someConst4 = 10;",
-        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n"
+        "signature": "-13679921373-export declare const pkg0 = 0;\nexport declare const someConst = 10;\nexport declare const someConst3 = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1743,7 +1823,7 @@ var someConst4 = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 930
+  "size": 966
 }
 
 //// [/user/username/projects/myproject/pkg1/tsconfig.tsbuildinfo] file changed its modified time
diff --git a/tests/baselines/reference/tsbuildWatch/publicApi/with-custom-transformers.js b/tests/baselines/reference/tsbuildWatch/publicApi/with-custom-transformers.js
index 3fc8654ee1310..33f79912d25f5 100644
--- a/tests/baselines/reference/tsbuildWatch/publicApi/with-custom-transformers.js
+++ b/tests/baselines/reference/tsbuildWatch/publicApi/with-custom-transformers.js
@@ -113,7 +113,7 @@ export declare function f2(): void;
 
 
 //// [/user/username/projects/myproject/shared/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing"],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-9393727241-export declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-9393727241-export declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/shared/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -126,15 +126,22 @@ export declare function f2(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
+          "impliedFormat": 1
+        },
         "version": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
-        "signature": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing"
+        "signature": "8649344783-export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -160,7 +167,7 @@ export declare function f2(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 939
+  "size": 987
 }
 
 //// [/user/username/projects/myproject/webpack/index.js]
@@ -197,7 +204,7 @@ export declare function f22(): void;
 
 
 //// [/user/username/projects/myproject/webpack/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing"],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-2037002130-export declare function f2(): void;\nexport declare class c2 {\n}\nexport declare enum e2 {\n}\nexport declare function f22(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"emitSignatures":[[2,"-2037002130-export declare function f2(): void;\nexport declare class c2 {\n}\nexport declare enum e2 {\n}\nexport declare function f22(): void;\n"]],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/webpack/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -210,15 +217,22 @@ export declare function f22(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing",
+          "impliedFormat": 1
+        },
         "version": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing",
-        "signature": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing"
+        "signature": "20140662566-export function f2() { }\nexport class c2 { }\nexport enum e2 { }\n// leading\nexport function f22() { } // trailing",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -244,10 +258,30 @@ export declare function f22(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 946
+  "size": 994
 }
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/webpack/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/shared/index.ts: *new*
   {}
@@ -374,7 +408,7 @@ export declare function f2(): void;
 
 
 //// [/user/username/projects/myproject/shared/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"14127205977-export function fooBar() {}export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing","signature":"1966424426-export declare function fooBar(): void;\nexport declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"14127205977-export function fooBar() {}export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing","signature":"1966424426-export declare function fooBar(): void;\nexport declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/shared/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -387,19 +421,23 @@ export declare function f2(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "14127205977-export function fooBar() {}export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
-          "signature": "1966424426-export declare function fooBar(): void;\nexport declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"
+          "signature": "1966424426-export declare function fooBar(): void;\nexport declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n",
+          "impliedFormat": 1
         },
         "version": "14127205977-export function fooBar() {}export function f1() { }\nexport class c { }\nexport enum e { }\n// leading\nexport function f2() { } // trailing",
-        "signature": "1966424426-export declare function fooBar(): void;\nexport declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n"
+        "signature": "1966424426-export declare function fooBar(): void;\nexport declare function f1(): void;\nexport declare class c {\n}\nexport declare enum e {\n}\nexport declare function f2(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -419,7 +457,7 @@ export declare function f2(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1008
+  "size": 1044
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/reexport/Reports-errors-correctly.js b/tests/baselines/reference/tsbuildWatch/reexport/Reports-errors-correctly.js
index 7a28b409ef0d5..8593078e4f1c4 100644
--- a/tests/baselines/reference/tsbuildWatch/reexport/Reports-errors-correctly.js
+++ b/tests/baselines/reference/tsbuildWatch/reexport/Reports-errors-correctly.js
@@ -135,7 +135,7 @@ export * from "./session";
 
 
 //// [/user/username/projects/reexport/out/pure/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../src/pure/session.ts","../../src/pure/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n","signature":"-1218067212-export interface Session {\n    foo: number;\n}\n"},"-5356193041-export * from \"./session\";\n"],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../../src"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../src/pure/session.ts","../../src/pure/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n","signature":"-1218067212-export interface Session {\n    foo: number;\n}\n","impliedFormat":1},{"version":"-5356193041-export * from \"./session\";\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../../src"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/reexport/out/pure/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -154,23 +154,32 @@ export * from "./session";
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/pure/session.ts": {
         "original": {
           "version": "1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n",
-          "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n"
+          "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n",
-        "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n"
+        "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/pure/index.ts": {
+        "original": {
+          "version": "-5356193041-export * from \"./session\";\n",
+          "impliedFormat": 1
+        },
         "version": "-5356193041-export * from \"./session\";\n",
-        "signature": "-5356193041-export * from \"./session\";\n"
+        "signature": "-5356193041-export * from \"./session\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -201,7 +210,7 @@ export * from "./session";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1049
+  "size": 1115
 }
 
 //// [/user/username/projects/reexport/out/main/index.js]
@@ -215,6 +224,28 @@ exports.session = {
 
 
 PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/reexport/out/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/reexport/out/pure/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/reexport/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/reexport/src/main/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/reexport/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/reexport/src/pure/package.json: *new*
   {"pollingInterval":2000}
 
@@ -333,7 +364,7 @@ export interface Session {
 
 //// [/user/username/projects/reexport/out/pure/index.js] file written with same contents
 //// [/user/username/projects/reexport/out/pure/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../src/pure/session.ts","../../src/pure/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"309257137-export interface Session {\n    foo: number;\n    bar: number;\n}\n","-5356193041-export * from \"./session\";\n"],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../../src"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./session.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../src/pure/session.ts","../../src/pure/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"309257137-export interface Session {\n    foo: number;\n    bar: number;\n}\n","impliedFormat":1},{"version":"-5356193041-export * from \"./session\";\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../../src"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./session.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/reexport/out/pure/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -352,19 +383,31 @@ export interface Session {
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/pure/session.ts": {
+        "original": {
+          "version": "309257137-export interface Session {\n    foo: number;\n    bar: number;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "309257137-export interface Session {\n    foo: number;\n    bar: number;\n}\n",
-        "signature": "309257137-export interface Session {\n    foo: number;\n    bar: number;\n}\n"
+        "signature": "309257137-export interface Session {\n    foo: number;\n    bar: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/pure/index.ts": {
+        "original": {
+          "version": "-5356193041-export * from \"./session\";\n",
+          "impliedFormat": 1
+        },
         "version": "-5356193041-export * from \"./session\";\n",
-        "signature": "-5356193041-export * from \"./session\";\n"
+        "signature": "-5356193041-export * from \"./session\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -395,7 +438,7 @@ export interface Session {
     "latestChangedDtsFile": "./session.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 959
+  "size": 1037
 }
 
 
@@ -517,7 +560,7 @@ export interface Session {
 
 //// [/user/username/projects/reexport/out/pure/index.js] file written with same contents
 //// [/user/username/projects/reexport/out/pure/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../src/pure/session.ts","../../src/pure/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n","signature":"-1218067212-export interface Session {\n    foo: number;\n}\n"},"-5356193041-export * from \"./session\";\n"],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../../src"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./session.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../src/pure/session.ts","../../src/pure/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n","signature":"-1218067212-export interface Session {\n    foo: number;\n}\n","impliedFormat":1},{"version":"-5356193041-export * from \"./session\";\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"..","rootDir":"../../src"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./session.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/reexport/out/pure/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -536,23 +579,32 @@ export interface Session {
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/pure/session.ts": {
         "original": {
           "version": "1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n",
-          "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n"
+          "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1782339311-export interface Session {\n    foo: number;\n    // bar: number;\n}\n",
-        "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n"
+        "signature": "-1218067212-export interface Session {\n    foo: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/pure/index.ts": {
+        "original": {
+          "version": "-5356193041-export * from \"./session\";\n",
+          "impliedFormat": 1
+        },
         "version": "-5356193041-export * from \"./session\";\n",
-        "signature": "-5356193041-export * from \"./session\";\n"
+        "signature": "-5356193041-export * from \"./session\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -583,7 +635,7 @@ export interface Session {
     "latestChangedDtsFile": "./session.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1051
+  "size": 1117
 }
 
 
diff --git a/tests/baselines/reference/tsbuildWatch/watchEnvironment/same-file-in-multiple-projects-with-single-watcher-per-file.js b/tests/baselines/reference/tsbuildWatch/watchEnvironment/same-file-in-multiple-projects-with-single-watcher-per-file.js
index cfda375a06a4b..85b38059b850f 100644
--- a/tests/baselines/reference/tsbuildWatch/watchEnvironment/same-file-in-multiple-projects-with-single-watcher-per-file.js
+++ b/tests/baselines/reference/tsbuildWatch/watchEnvironment/same-file-in-multiple-projects-with-single-watcher-per-file.js
@@ -154,6 +154,32 @@ exports.pkg3 = 3;
 
 
 
+PolledWatches::
+/a/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/package.json: *new*
+  {"pollingInterval":2000}
+/package.json: *new*
+  {"pollingInterval":2000}
+/user/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg3/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/typings/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/pkg0/index.ts: *new*
   {}
@@ -466,6 +492,34 @@ Output::
 
 
 
+PolledWatches::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/typings/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/pkg3/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/pkg0/index.ts:
   {}
@@ -655,6 +709,30 @@ Output::
 
 
 
+PolledWatches *deleted*::
+/a/lib/package.json:
+  {"pollingInterval":2000}
+/a/package.json:
+  {"pollingInterval":2000}
+/package.json:
+  {"pollingInterval":2000}
+/user/package.json:
+  {"pollingInterval":2000}
+/user/username/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg0/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/pkg2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/typings/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /user/username/projects/myproject/tsconfig.json:
   {}
diff --git a/tests/baselines/reference/tsc/cancellationToken/when-emitting-buildInfo.js b/tests/baselines/reference/tsc/cancellationToken/when-emitting-buildInfo.js
index c5f4bec270c67..5c9a2900a5b8f 100644
--- a/tests/baselines/reference/tsc/cancellationToken/when-emitting-buildInfo.js
+++ b/tests/baselines/reference/tsc/cancellationToken/when-emitting-buildInfo.js
@@ -112,7 +112,7 @@ export declare class D {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-5130721255-export class C {\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5130721255-export class C {\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -136,43 +136,53 @@ export declare class D {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-5130721255-export class C {\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5130721255-export class C {\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -209,7 +219,7 @@ export declare class D {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1236
+  "size": 1326
 }
 
 
@@ -263,7 +273,7 @@ Operation ws cancelled:: true
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,5],"changeFileSet":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,5],"changeFileSet":[2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -287,43 +297,53 @@ Operation ws cancelled:: true
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -362,7 +382,7 @@ Operation ws cancelled:: true
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1276
+  "size": 1366
 }
 
 
@@ -422,7 +442,7 @@ export declare function foo(): void;
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n"},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n","impliedFormat":1},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -446,43 +466,53 @@ export declare function foo(): void;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-          "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n"
+          "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-        "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n"
+        "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -519,7 +549,7 @@ export declare function foo(): void;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1296
+  "size": 1386
 }
 
 
diff --git a/tests/baselines/reference/tsc/cancellationToken/when-using-state.js b/tests/baselines/reference/tsc/cancellationToken/when-using-state.js
index abf55988c4473..8370dc648cff3 100644
--- a/tests/baselines/reference/tsc/cancellationToken/when-using-state.js
+++ b/tests/baselines/reference/tsc/cancellationToken/when-using-state.js
@@ -112,7 +112,7 @@ export declare class D {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-5130721255-export class C {\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5130721255-export class C {\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -136,43 +136,53 @@ export declare class D {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-5130721255-export class C {\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-5130721255-export class C {\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -209,7 +219,7 @@ export declare class D {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1236
+  "size": 1326
 }
 
 
@@ -263,7 +273,7 @@ Operation ws cancelled:: true
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,5],"changeFileSet":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,5],"changeFileSet":[2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -287,43 +297,53 @@ Operation ws cancelled:: true
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -362,7 +382,7 @@ Operation ws cancelled:: true
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1276
+  "size": 1366
 }
 
 
@@ -422,7 +442,7 @@ export declare function foo(): void;
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n"},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"840271342-export class C {\n    d = 1;\n}export function foo() {}","signature":"-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n","impliedFormat":1},{"version":"-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -446,43 +466,53 @@ export declare function foo(): void;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-          "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n"
+          "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "840271342-export class C {\n    d = 1;\n}export function foo() {}",
-        "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n"
+        "signature": "-7819740442-export declare class C {\n    d: number;\n}\nexport declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6441446591-import {C} from './c';\nexport class B {\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -519,7 +549,7 @@ export declare function foo(): void;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1296
+  "size": 1386
 }
 
 
diff --git a/tests/baselines/reference/tsc/composite/converting-to-modules.js b/tests/baselines/reference/tsc/composite/converting-to-modules.js
index 353c98b93221b..fc07c495c2a1b 100644
--- a/tests/baselines/reference/tsc/composite/converting-to-modules.js
+++ b/tests/baselines/reference/tsc/composite/converting-to-modules.js
@@ -42,7 +42,7 @@ var x = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -55,21 +55,25 @@ var x = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -89,7 +93,7 @@ var x = 10;
     "latestChangedDtsFile": "./src/main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 825
+  "size": 861
 }
 
 
@@ -113,7 +117,7 @@ exitCode:: ExitStatus.Success
 
 //// [/src/project/src/main.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true}],"root":[2],"options":{"composite":true,"module":5},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"composite":true,"module":5},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -126,21 +130,25 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -161,6 +169,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./src/main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 844
+  "size": 880
 }
 
diff --git a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-moduleCaseChange.js b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-moduleCaseChange.js
index f4daf4e6153e4..90be8bd2b8703 100644
--- a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-moduleCaseChange.js
+++ b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-moduleCaseChange.js
@@ -100,6 +100,12 @@ interface Array<T> { length: number; [n: number]: T; }
 
 /a/lib/tsc.js -p plugin-one --explainFiles
 Output::
+File '/user/username/projects/myproject/plugin-one/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module 'typescript-fsa' from '/user/username/projects/myproject/plugin-one/action.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'typescript-fsa' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -118,6 +124,13 @@ File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/plugin-one/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'plugin-two' from '/user/username/projects/myproject/plugin-one/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'plugin-two' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -131,6 +144,12 @@ File '/user/username/projects/myproject/plugin-one/node_modules/plugin-two/index
 File '/user/username/projects/myproject/plugin-one/node_modules/plugin-two/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/user/username/projects/myproject/plugin-one/node_modules/plugin-two/index.d.ts', result '/user/username/projects/myProject/plugin-two/index.d.ts'.
 ======== Module name 'plugin-two' was successfully resolved to '/user/username/projects/myProject/plugin-two/index.d.ts'. ========
+File '/user/username/projects/myProject/plugin-two/package.json' does not exist.
+File '/user/username/projects/myProject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'typescript-fsa' from '/user/username/projects/myProject/plugin-two/index.d.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'typescript-fsa' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -149,6 +168,10 @@ File '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 plugin-one/node_modules/typescript-fsa/index.d.ts
diff --git a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link-moduleCaseChange.js b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link-moduleCaseChange.js
index 56d3133c71b5b..531388d069099 100644
--- a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link-moduleCaseChange.js
+++ b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link-moduleCaseChange.js
@@ -106,6 +106,12 @@ interface Array<T> { length: number; [n: number]: T; }
 
 /a/lib/tsc.js -p plugin-one --explainFiles
 Output::
+File '/user/username/projects/myproject/plugin-one/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module 'plugin-two' from '/user/username/projects/myproject/plugin-one/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'plugin-two' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -143,6 +149,9 @@ File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myProject/plugin-two/dist/commonjs/package.json' does not exist.
+File '/user/username/projects/myProject/plugin-two/dist/package.json' does not exist.
+Found 'package.json' at '/user/username/projects/myProject/plugin-two/package.json'.
 ======== Resolving module 'typescript-fsa' from '/user/username/projects/myProject/plugin-two/dist/commonjs/index.d.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'typescript-fsa' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -163,6 +172,11 @@ File '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myProject/plugin-two/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 plugin-two/node_modules/typescript-fsa/index.d.ts
diff --git a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link.js b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link.js
index 366ea665d6944..483e9f429a73f 100644
--- a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link.js
+++ b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package-with-indirect-link.js
@@ -106,6 +106,12 @@ interface Array<T> { length: number; [n: number]: T; }
 
 /a/lib/tsc.js -p plugin-one --explainFiles
 Output::
+File '/user/username/projects/myproject/plugin-one/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module 'plugin-two' from '/user/username/projects/myproject/plugin-one/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'plugin-two' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -143,6 +149,9 @@ File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myproject/plugin-two/dist/commonjs/package.json' does not exist.
+File '/user/username/projects/myproject/plugin-two/dist/package.json' does not exist.
+Found 'package.json' at '/user/username/projects/myproject/plugin-two/package.json'.
 ======== Resolving module 'typescript-fsa' from '/user/username/projects/myproject/plugin-two/dist/commonjs/index.d.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'typescript-fsa' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -163,6 +172,11 @@ File '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 plugin-two/node_modules/typescript-fsa/index.d.ts
diff --git a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package.js b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package.js
index 4a79a18f881ef..8828fb560b709 100644
--- a/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package.js
+++ b/tests/baselines/reference/tsc/declarationEmit/when-same-version-is-referenced-through-source-and-another-symlinked-package.js
@@ -100,6 +100,12 @@ interface Array<T> { length: number; [n: number]: T; }
 
 /a/lib/tsc.js -p plugin-one --explainFiles
 Output::
+File '/user/username/projects/myproject/plugin-one/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module 'typescript-fsa' from '/user/username/projects/myproject/plugin-one/action.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'typescript-fsa' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -118,6 +124,13 @@ File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myproject/plugin-one/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/plugin-one/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'plugin-two' from '/user/username/projects/myproject/plugin-one/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'plugin-two' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -131,6 +144,12 @@ File '/user/username/projects/myproject/plugin-one/node_modules/plugin-two/index
 File '/user/username/projects/myproject/plugin-one/node_modules/plugin-two/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/user/username/projects/myproject/plugin-one/node_modules/plugin-two/index.d.ts', result '/user/username/projects/myproject/plugin-two/index.d.ts'.
 ======== Module name 'plugin-two' was successfully resolved to '/user/username/projects/myproject/plugin-two/index.d.ts'. ========
+File '/user/username/projects/myproject/plugin-two/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'typescript-fsa' from '/user/username/projects/myproject/plugin-two/index.d.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'typescript-fsa' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -149,6 +168,10 @@ File '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/i
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/index.d.ts', result '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/index.d.ts'.
 ======== Module name 'typescript-fsa' was successfully resolved to '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/index.d.ts' with Package ID 'typescript-fsa/index.d.ts@3.0.0-beta-2'. ========
+File '/user/username/projects/myproject/plugin-two/node_modules/typescript-fsa/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 plugin-one/node_modules/typescript-fsa/index.d.ts
diff --git a/tests/baselines/reference/tsc/extends/resolves-the-symlink-path.js b/tests/baselines/reference/tsc/extends/resolves-the-symlink-path.js
index 73152dc12a260..4e707059e35d2 100644
--- a/tests/baselines/reference/tsc/extends/resolves-the-symlink-path.js
+++ b/tests/baselines/reference/tsc/extends/resolves-the-symlink-path.js
@@ -56,7 +56,7 @@ export declare const x = 10;
 
 
 //// [/users/user/projects/myproject/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"6873164248-// some comment\nexport const x = 10;\n","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true,"removeComments":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"6873164248-// some comment\nexport const x = 10;\n","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"removeComments":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/users/user/projects/myproject/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -69,19 +69,23 @@ export declare const x = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "6873164248-// some comment\nexport const x = 10;\n",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "6873164248-// some comment\nexport const x = 10;\n",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,7 +106,7 @@ export declare const x = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 787
+  "size": 823
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field-with-declaration-emit-enabled.js b/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field-with-declaration-emit-enabled.js
index 850a4149e2e9c..c1b0eea3b9eff 100644
--- a/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field-with-declaration-emit-enabled.js
+++ b/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field-with-declaration-emit-enabled.js
@@ -83,7 +83,7 @@ var wrapper = function () { return Messageable(); };
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"declaration":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true,"impliedFormat":1},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n","impliedFormat":1},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"declaration":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -102,27 +102,33 @@ var wrapper = function () { return Messageable(); };
       "../../lib/lib.d.ts": {
         "original": {
           "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
         "signature": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./messageableperson.ts": {
         "original": {
           "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-          "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"
+          "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n",
+          "impliedFormat": 1
         },
         "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-        "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"
+        "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -150,7 +156,7 @@ var wrapper = function () { return Messageable(); };
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1658
+  "size": 1712
 }
 
 
@@ -205,7 +211,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 //// [/src/project/main.js] file written with same contents
 //// [/src/project/MessageablePerson.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true},{"version":"3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected."},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"declaration":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./main.ts","start":131,"length":7,"messageText":"Property 'message' is protected and only accessible within class 'MessageableClass' and its subclasses.","category":1,"code":2445}]],2],"emitDiagnosticsPerFile":[[2,[{"file":"./messageableperson.ts","start":116,"length":7,"messageText":"Property 'message' of exported class expression may not be private or protected.","category":1,"code":4094}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true,"impliedFormat":1},{"version":"3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected.","impliedFormat":1},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"declaration":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./main.ts","start":131,"length":7,"messageText":"Property 'message' is protected and only accessible within class 'MessageableClass' and its subclasses.","category":1,"code":2445}]],2],"emitDiagnosticsPerFile":[[2,[{"file":"./messageableperson.ts","start":116,"length":7,"messageText":"Property 'message' of exported class expression may not be private or protected.","category":1,"code":4094}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -224,27 +230,33 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../lib/lib.d.ts": {
         "original": {
           "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
         "signature": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./messageableperson.ts": {
         "original": {
           "version": "3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-          "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected."
+          "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected.",
+          "impliedFormat": 1
         },
         "version": "3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-        "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected."
+        "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected.",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -299,7 +311,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2163
+  "size": 2217
 }
 
 
@@ -355,7 +367,7 @@ exitCode:: ExitStatus.Success
 //// [/src/project/MessageablePerson.d.ts] file written with same contents
 //// [/src/project/MessageablePerson.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"declaration":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true,"impliedFormat":1},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n","impliedFormat":1},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"declaration":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -374,27 +386,33 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
         "signature": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./messageableperson.ts": {
         "original": {
           "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-          "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"
+          "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n",
+          "impliedFormat": 1
         },
         "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-        "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"
+        "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -422,7 +440,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1658
+  "size": 1712
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field.js b/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field.js
index 3957d714babbc..1b838b08ca048 100644
--- a/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field.js
+++ b/tests/baselines/reference/tsc/incremental/change-to-modifier-of-class-expression-field.js
@@ -69,7 +69,7 @@ var wrapper = function () { return Messageable(); };
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true},"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}"],"root":[2,3],"options":{"declaration":false},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true,"impliedFormat":1},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","impliedFormat":1},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","impliedFormat":1}],"root":[2,3],"options":{"declaration":false},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -88,19 +88,31 @@ var wrapper = function () { return Messageable(); };
       "../../lib/lib.d.ts": {
         "original": {
           "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
         "signature": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./messageableperson.ts": {
+        "original": {
+          "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
+          "impliedFormat": 1
+        },
         "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-        "signature": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;"
+        "signature": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
+          "impliedFormat": 1
+        },
         "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-        "signature": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}"
+        "signature": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -128,7 +140,7 @@ var wrapper = function () { return Messageable(); };
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1380
+  "size": 1458
 }
 
 
@@ -174,7 +186,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 //// [/src/project/main.js] file written with same contents
 //// [/src/project/MessageablePerson.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true},{"version":"3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected."},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"declaration":false},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./main.ts","start":131,"length":7,"messageText":"Property 'message' is protected and only accessible within class 'MessageableClass' and its subclasses.","category":1,"code":2445}]],2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true,"impliedFormat":1},{"version":"3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected.","impliedFormat":1},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"declaration":false},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./main.ts","start":131,"length":7,"messageText":"Property 'message' is protected and only accessible within class 'MessageableClass' and its subclasses.","category":1,"code":2445}]],2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -193,27 +205,33 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
         "signature": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./messageableperson.ts": {
         "original": {
           "version": "3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-          "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected."
+          "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected.",
+          "impliedFormat": 1
         },
         "version": "3462418372-const Messageable = () => {\n    return class MessageableClass {\n        protected message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-        "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected."
+        "signature": "-21450256696-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n(116,7)Error4094: Property 'message' of exported class expression may not be private or protected.",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -253,7 +271,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1952
+  "size": 2006
 }
 
 
@@ -299,7 +317,7 @@ exitCode:: ExitStatus.Success
 //// [/src/project/main.js] file written with same contents
 //// [/src/project/MessageablePerson.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"declaration":false},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./messageableperson.ts","./main.ts"],"fileInfos":[{"version":"5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;","affectsGlobalScope":true,"impliedFormat":1},{"version":"31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;","signature":"-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n","impliedFormat":1},{"version":"4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"declaration":false},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -318,27 +336,33 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
         "signature": "5700251342-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };type ReturnType<T extends (...args: any) => any> = T extends (...args: any) => infer R ? R : any;\ntype InstanceType<T extends abstract new (...args: any) => any> = T extends abstract new (...args: any) => infer R ? R : any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./messageableperson.ts": {
         "original": {
           "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-          "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"
+          "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n",
+          "impliedFormat": 1
         },
         "version": "31173349369-const Messageable = () => {\n    return class MessageableClass {\n        public message = 'hello';\n    }\n};\nconst wrapper = () => Messageable();\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;",
-        "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n"
+        "signature": "-21006966954-declare const wrapper: () => {\n    new (): {\n        message: string;\n    };\n};\ntype MessageablePerson = InstanceType<ReturnType<typeof wrapper>>;\nexport default MessageablePerson;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4191603667-import MessageablePerson from './MessageablePerson.js';\nfunction logMessage( person: MessageablePerson ) {\n    console.log( person.message );\n}",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -366,7 +390,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1659
+  "size": 1713
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file-through-indirect-import.js b/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file-through-indirect-import.js
index 8254c9bee672f..da1eea15878c4 100644
--- a/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file-through-indirect-import.js
+++ b/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file-through-indirect-import.js
@@ -75,7 +75,7 @@ Object.defineProperty(exports, "ConstantNumber", { enumerable: true, get: functi
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./reexport.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664763344-declare const a = 1;\n","affectsGlobalScope":true},{"version":"-2659799048-export default 1;","signature":"-183154784-declare const _default: 1;\nexport default _default;\n"},{"version":"-1476032387-export { default as ConstantNumber } from \"./constants\"","signature":"-1081498782-export { default as ConstantNumber } from \"./constants\";\n"},{"version":"2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[3],[4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./reexport.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./reexport.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664763344-declare const a = 1;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2659799048-export default 1;","signature":"-183154784-declare const _default: 1;\nexport default _default;\n","impliedFormat":1},{"version":"-1476032387-export { default as ConstantNumber } from \"./constants\"","signature":"-1081498782-export { default as ConstantNumber } from \"./constants\";\n","impliedFormat":1},{"version":"2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[3],[4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./reexport.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,46 +99,56 @@ Object.defineProperty(exports, "ConstantNumber", { enumerable: true, get: functi
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class1.ts": {
         "original": {
           "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
           "signature": "-3664763344-declare const a = 1;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
         "signature": "-3664763344-declare const a = 1;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./constants.ts": {
         "original": {
           "version": "-2659799048-export default 1;",
-          "signature": "-183154784-declare const _default: 1;\nexport default _default;\n"
+          "signature": "-183154784-declare const _default: 1;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-2659799048-export default 1;",
-        "signature": "-183154784-declare const _default: 1;\nexport default _default;\n"
+        "signature": "-183154784-declare const _default: 1;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "./reexport.ts": {
         "original": {
           "version": "-1476032387-export { default as ConstantNumber } from \"./constants\"",
-          "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n"
+          "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n",
+          "impliedFormat": 1
         },
         "version": "-1476032387-export { default as ConstantNumber } from \"./constants\"",
-        "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n"
+        "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n",
+        "impliedFormat": "commonjs"
       },
       "./types.d.ts": {
         "original": {
           "version": "2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber",
         "signature": "2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -176,7 +186,7 @@ Object.defineProperty(exports, "ConstantNumber", { enumerable: true, get: functi
     "latestChangedDtsFile": "./reexport.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1360
+  "size": 1450
 }
 
 
@@ -218,7 +228,7 @@ exports.default = 2;
 
 //// [/src/project/reexport.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./reexport.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664762255-declare const a = 2;\n","affectsGlobalScope":true},{"version":"-2659799015-export default 2;","signature":"-10876795135-declare const _default: 2;\nexport default _default;\n"},{"version":"-1476032387-export { default as ConstantNumber } from \"./constants\"","signature":"-1081498782-export { default as ConstantNumber } from \"./constants\";\n"},{"version":"2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[3],[4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./class1.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type '1' is not assignable to type '2'."}]],3,4,5],"latestChangedDtsFile":"./class1.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./reexport.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664762255-declare const a = 2;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2659799015-export default 2;","signature":"-10876795135-declare const _default: 2;\nexport default _default;\n","impliedFormat":1},{"version":"-1476032387-export { default as ConstantNumber } from \"./constants\"","signature":"-1081498782-export { default as ConstantNumber } from \"./constants\";\n","impliedFormat":1},{"version":"2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[3],[4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./class1.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type '1' is not assignable to type '2'."}]],3,4,5],"latestChangedDtsFile":"./class1.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -242,46 +252,56 @@ exports.default = 2;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class1.ts": {
         "original": {
           "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
           "signature": "-3664762255-declare const a = 2;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
         "signature": "-3664762255-declare const a = 2;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./constants.ts": {
         "original": {
           "version": "-2659799015-export default 2;",
-          "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n"
+          "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-2659799015-export default 2;",
-        "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n"
+        "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "./reexport.ts": {
         "original": {
           "version": "-1476032387-export { default as ConstantNumber } from \"./constants\"",
-          "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n"
+          "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n",
+          "impliedFormat": 1
         },
         "version": "-1476032387-export { default as ConstantNumber } from \"./constants\"",
-        "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n"
+        "signature": "-1081498782-export { default as ConstantNumber } from \"./constants\";\n",
+        "impliedFormat": "commonjs"
       },
       "./types.d.ts": {
         "original": {
           "version": "2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber",
         "signature": "2093085814-type MagicNumber = typeof import('./reexport').ConstantNumber",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -331,6 +351,6 @@ exports.default = 2;
     "latestChangedDtsFile": "./class1.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1489
+  "size": 1579
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file.js b/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file.js
index 66127839bc652..83f28886aafc1 100644
--- a/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file.js
+++ b/tests/baselines/reference/tsc/incremental/change-to-type-that-gets-used-as-global-through-export-in-another-file.js
@@ -60,7 +60,7 @@ exports.default = 1;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664763344-declare const a = 1;\n","affectsGlobalScope":true},{"version":"-2659799048-export default 1;","signature":"-183154784-declare const _default: 1;\nexport default _default;\n"},{"version":"-2080821236-type MagicNumber = typeof import('./constants').default","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./constants.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664763344-declare const a = 1;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2659799048-export default 1;","signature":"-183154784-declare const _default: 1;\nexport default _default;\n","impliedFormat":1},{"version":"-2080821236-type MagicNumber = typeof import('./constants').default","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./constants.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -80,38 +80,46 @@ exports.default = 1;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class1.ts": {
         "original": {
           "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
           "signature": "-3664763344-declare const a = 1;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
         "signature": "-3664763344-declare const a = 1;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./constants.ts": {
         "original": {
           "version": "-2659799048-export default 1;",
-          "signature": "-183154784-declare const _default: 1;\nexport default _default;\n"
+          "signature": "-183154784-declare const _default: 1;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-2659799048-export default 1;",
-        "signature": "-183154784-declare const _default: 1;\nexport default _default;\n"
+        "signature": "-183154784-declare const _default: 1;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "./types.d.ts": {
         "original": {
           "version": "-2080821236-type MagicNumber = typeof import('./constants').default",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-2080821236-type MagicNumber = typeof import('./constants').default",
         "signature": "-2080821236-type MagicNumber = typeof import('./constants').default",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -144,7 +152,7 @@ exports.default = 1;
     "latestChangedDtsFile": "./constants.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1157
+  "size": 1229
 }
 
 
@@ -185,7 +193,7 @@ exports.default = 2;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664762255-declare const a = 2;\n","affectsGlobalScope":true},{"version":"-2659799015-export default 2;","signature":"-10876795135-declare const _default: 2;\nexport default _default;\n"},{"version":"-2080821236-type MagicNumber = typeof import('./constants').default","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./class1.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type '1' is not assignable to type '2'."}]],3,4],"latestChangedDtsFile":"./class1.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts","./constants.ts","./types.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"4085502068-const a: MagicNumber = 1;\nconsole.log(a);","signature":"-3664762255-declare const a = 2;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2659799015-export default 2;","signature":"-10876795135-declare const _default: 2;\nexport default _default;\n","impliedFormat":1},{"version":"-2080821236-type MagicNumber = typeof import('./constants').default","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./class1.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type '1' is not assignable to type '2'."}]],3,4],"latestChangedDtsFile":"./class1.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -205,38 +213,46 @@ exports.default = 2;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class1.ts": {
         "original": {
           "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
           "signature": "-3664762255-declare const a = 2;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "4085502068-const a: MagicNumber = 1;\nconsole.log(a);",
         "signature": "-3664762255-declare const a = 2;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./constants.ts": {
         "original": {
           "version": "-2659799015-export default 2;",
-          "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n"
+          "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n",
+          "impliedFormat": 1
         },
         "version": "-2659799015-export default 2;",
-        "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n"
+        "signature": "-10876795135-declare const _default: 2;\nexport default _default;\n",
+        "impliedFormat": "commonjs"
       },
       "./types.d.ts": {
         "original": {
           "version": "-2080821236-type MagicNumber = typeof import('./constants').default",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-2080821236-type MagicNumber = typeof import('./constants').default",
         "signature": "-2080821236-type MagicNumber = typeof import('./constants').default",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -281,6 +297,6 @@ exports.default = 2;
     "latestChangedDtsFile": "./class1.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1285
+  "size": 1357
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/different-options-discrepancies.js b/tests/baselines/reference/tsc/incremental/different-options-discrepancies.js
index e8fd5fc136a36..0694699c274a3 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -66,19 +71,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,19 +137,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -185,19 +200,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -246,19 +266,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -304,19 +329,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsc/incremental/different-options-with-incremental-discrepancies.js b/tests/baselines/reference/tsc/incremental/different-options-with-incremental-discrepancies.js
index 706bd7b64b101..89fbd35d784e2 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-with-incremental-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-with-incremental-discrepancies.js
@@ -8,19 +8,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -62,19 +67,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-18487752940-export const a = 10;const aLocal = 10;"
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -123,19 +133,24 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -177,19 +192,24 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
-        "version": "-17390360476-export const a = 10;const aLocal = 100;"
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
-        "version": "-6189287562-export const b = 10;const bLocal = 10;"
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
-        "version": "3248317647-import { a } from \"./a\";export const c = a;"
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
-        "version": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile-discrepancies.js b/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile-discrepancies.js
index e39854108f896..e84c1aa9a3254 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile-discrepancies.js
@@ -8,11 +8,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -39,11 +54,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -78,11 +108,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -109,11 +154,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile.js b/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile.js
index 8fdc4924f846d..87d1a8ab6cacb 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-with-incremental-with-outFile.js
@@ -97,7 +97,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -110,11 +110,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -136,7 +171,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 884
+  "size": 1034
 }
 
 
@@ -208,7 +243,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAzB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -221,11 +256,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -248,7 +318,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 901
+  "size": 1051
 }
 
 
@@ -316,7 +386,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -329,11 +399,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -355,7 +460,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 884
+  "size": 1034
 }
 
 
@@ -410,7 +515,7 @@ declare module "d" {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -423,11 +528,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -450,7 +590,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 903
+  "size": 1053
 }
 
 
@@ -509,7 +649,7 @@ declare module "d" {
 {"version":3,"file":"outFile.d.ts","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";IAAA,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICApB,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICAI,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC;;;ICAnB,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -522,11 +662,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -550,7 +725,7 @@ declare module "d" {
     }
   },
   "version": "FakeTSVersion",
-  "size": 925
+  "size": 1075
 }
 
 
@@ -656,7 +831,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -669,11 +844,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -695,7 +905,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 885
+  "size": 1035
 }
 
 
@@ -738,7 +948,7 @@ No shapes updated in the builder::
 //// [/src/outFile.d.ts] file written with same contents
 //// [/src/outFile.d.ts.map] file written with same contents
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -751,11 +961,46 @@ No shapes updated in the builder::
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -779,7 +1024,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 926
+  "size": 1076
 }
 
 
@@ -883,7 +1128,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoib3V0RmlsZS5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbInByb2plY3QvYS50cyIsInByb2plY3QvYi50cyIsInByb2plY3QvYy50cyIsInByb2plY3QvZC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7O0lBQWEsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsR0FBRyxDQUFDOzs7Ozs7SUNBMUIsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsRUFBRSxDQUFDOzs7Ozs7SUNBRCxRQUFBLENBQUMsR0FBRyxLQUFDLENBQUM7Ozs7OztJQ0FOLFFBQUEsQ0FBQyxHQUFHLEtBQUMsQ0FBQyJ9
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -896,11 +1141,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -923,7 +1203,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 908
+  "size": 1058
 }
 
 
@@ -995,7 +1275,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,GAAG,CAAC;;;;;;ICA1B,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js","sourceMap":true}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1008,11 +1288,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1035,7 +1350,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 902
+  "size": 1052
 }
 
 
@@ -1103,7 +1418,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1116,11 +1431,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1142,7 +1492,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 885
+  "size": 1035
 }
 
 
@@ -1185,7 +1535,7 @@ No shapes updated in the builder::
 //// [/src/outFile.d.ts] file written with same contents
 //// [/src/outFile.d.ts.map] file written with same contents
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"}},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1198,11 +1548,46 @@ No shapes updated in the builder::
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1226,7 +1611,7 @@ No shapes updated in the builder::
     }
   },
   "version": "FakeTSVersion",
-  "size": 926
+  "size": 1076
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/different-options-with-incremental.js b/tests/baselines/reference/tsc/incremental/different-options-with-incremental.js
index 55aeaa0cb391d..112df79a805e5 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-with-incremental.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-with-incremental.js
@@ -106,7 +106,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -130,27 +130,49 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-18487752940-export const a = 10;const aLocal = 10;"
+        "signature": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-6189287562-export const b = 10;const bLocal = 10;"
+        "signature": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "3248317647-import { a } from \"./a\";export const c = a;"
+        "signature": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "signature": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -184,7 +206,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1078
 }
 
 
@@ -266,7 +288,7 @@ exports.d = b_1.b;
 {"version":3,"file":"d.js","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":";;;AAAA,yBAAwB;AAAa,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -290,27 +312,49 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-18487752940-export const a = 10;const aLocal = 10;"
+        "signature": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-6189287562-export const b = 10;const bLocal = 10;"
+        "signature": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "3248317647-import { a } from \"./a\";export const c = a;"
+        "signature": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "signature": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -347,7 +391,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 969
+  "size": 1107
 }
 
 
@@ -416,7 +460,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -440,27 +484,49 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-18487752940-export const a = 10;const aLocal = 10;"
+        "signature": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-6189287562-export const b = 10;const bLocal = 10;"
+        "signature": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "3248317647-import { a } from \"./a\";export const c = a;"
+        "signature": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-19615769517-import { b } from \"./b\";export const d = b;"
+        "signature": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -494,7 +560,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1078
 }
 
 
@@ -548,7 +614,7 @@ export declare const d = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -572,43 +638,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -645,7 +721,7 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1247
+  "size": 1337
 }
 
 
@@ -712,7 +788,7 @@ export declare const d = 10;
 {"version":3,"file":"d.d.ts","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":"AAAwB,eAAO,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -736,43 +812,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -810,7 +896,7 @@ export declare const d = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1269
+  "size": 1359
 }
 
 
@@ -893,7 +979,7 @@ var aLocal = 100;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -917,43 +1003,53 @@ var aLocal = 100;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -987,7 +1083,7 @@ var aLocal = 100;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1217
+  "size": 1307
 }
 
 
@@ -1034,7 +1130,7 @@ No shapes updated in the builder::
 //// [/src/project/d.d.ts] file written with same contents
 //// [/src/project/d.d.ts.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1058,43 +1154,53 @@ No shapes updated in the builder::
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1132,7 +1238,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1270
+  "size": 1360
 }
 
 
@@ -1235,7 +1341,7 @@ exports.d = b_1.b;
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZC5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbImQudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7O0FBQUEseUJBQXdCO0FBQWEsUUFBQSxDQUFDLEdBQUcsS0FBQyxDQUFDIn0=
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1259,43 +1365,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1332,7 +1448,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1252
+  "size": 1342
 }
 
 
@@ -1408,7 +1524,7 @@ exports.d = b_1.b;
 
 //// [/src/project/d.js.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1432,43 +1548,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1505,7 +1631,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1246
+  "size": 1336
 }
 
 
@@ -1574,7 +1700,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1598,43 +1724,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1668,7 +1804,7 @@ exports.d = b_1.b;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1217
+  "size": 1307
 }
 
 
@@ -1715,7 +1851,7 @@ No shapes updated in the builder::
 //// [/src/project/d.d.ts] file written with same contents
 //// [/src/project/d.d.ts.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1739,43 +1875,53 @@ No shapes updated in the builder::
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1813,7 +1959,7 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1270
+  "size": 1360
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/different-options-with-outFile-discrepancies.js b/tests/baselines/reference/tsc/incremental/different-options-with-outFile-discrepancies.js
index c6e40e5d0a283..4467e4ae0572e 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-with-outFile-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-with-outFile-discrepancies.js
@@ -6,11 +6,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -41,11 +56,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -81,11 +111,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -116,11 +161,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -154,11 +214,26 @@ CleanBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -189,11 +264,26 @@ IncrementalBuild:
 {
   "program": {
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
diff --git a/tests/baselines/reference/tsc/incremental/different-options-with-outFile.js b/tests/baselines/reference/tsc/incremental/different-options-with-outFile.js
index 5a63c62a53519..ca314852a1053 100644
--- a/tests/baselines/reference/tsc/incremental/different-options-with-outFile.js
+++ b/tests/baselines/reference/tsc/incremental/different-options-with-outFile.js
@@ -112,7 +112,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -125,11 +125,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -154,7 +189,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1184
+  "size": 1334
 }
 
 
@@ -226,7 +261,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAzB,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -239,11 +274,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -269,7 +339,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1201
+  "size": 1351
 }
 
 
@@ -337,7 +407,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -350,11 +420,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -379,7 +484,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1184
+  "size": 1334
 }
 
 
@@ -509,7 +614,7 @@ declare module "d" {
 {"version":3,"file":"outFile.d.ts","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";IAAA,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICApB,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC;;;ICAI,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC;;;ICAnB,MAAM,CAAC,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -522,11 +627,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -553,7 +693,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1225
+  "size": 1375
 }
 
 
@@ -607,7 +747,7 @@ declare module "d" {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-18487752940-export const a = 10;const aLocal = 10;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -620,11 +760,46 @@ declare module "d" {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-18487752940-export const a = 10;const aLocal = 10;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-18487752940-export const a = 10;const aLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-18487752940-export const a = 10;const aLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -649,7 +824,7 @@ declare module "d" {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1184
+  "size": 1334
 }
 
 
@@ -791,7 +966,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -804,11 +979,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -833,7 +1043,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1185
+  "size": 1335
 }
 
 
@@ -938,7 +1148,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoib3V0RmlsZS5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbInByb2plY3QvYS50cyIsInByb2plY3QvYi50cyIsInByb2plY3QvYy50cyIsInByb2plY3QvZC50cyJdLCJuYW1lcyI6W10sIm1hcHBpbmdzIjoiOzs7O0lBQWEsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsR0FBRyxDQUFDOzs7Ozs7SUNBMUIsUUFBQSxDQUFDLEdBQUcsRUFBRSxDQUFDO0lBQUEsSUFBTSxNQUFNLEdBQUcsRUFBRSxDQUFDOzs7Ozs7SUNBRCxRQUFBLENBQUMsR0FBRyxLQUFDLENBQUM7Ozs7OztJQ0FOLFFBQUEsQ0FBQyxHQUFHLEtBQUMsQ0FBQyJ9
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -951,11 +1161,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -981,7 +1226,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1208
+  "size": 1358
 }
 
 
@@ -1053,7 +1298,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 {"version":3,"file":"outFile.js","sourceRoot":"","sources":["project/a.ts","project/b.ts","project/c.ts","project/d.ts"],"names":[],"mappings":";;;;IAAa,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,GAAG,CAAC;;;;;;ICA1B,QAAA,CAAC,GAAG,EAAE,CAAC;IAAA,IAAM,MAAM,GAAG,EAAE,CAAC;;;;;;ICAD,QAAA,CAAC,GAAG,KAAC,CAAC;;;;;;ICAN,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1066,11 +1311,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1096,7 +1376,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1202
+  "size": 1352
 }
 
 
@@ -1191,7 +1471,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./outFile.js"},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1204,11 +1484,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1234,7 +1549,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1207
+  "size": 1357
 }
 
 
@@ -1305,7 +1620,7 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
 
 //// [/src/outFile.js.map] file written with same contents
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","-17390360476-export const a = 10;const aLocal = 100;","-6189287562-export const b = 10;const bLocal = 10;","3248317647-import { a } from \"./a\";export const c = a;","-19615769517-import { b } from \"./b\";export const d = b;"],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts","./project/c.ts","./project/d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"module":2,"outFile":"./outFile.js","sourceMap":true},"outSignature":"-25657667359-declare module \"a\" {\n    export const a = 10;\n}\ndeclare module \"b\" {\n    export const b = 10;\n}\ndeclare module \"c\" {\n    export const c = 10;\n}\ndeclare module \"d\" {\n    export const d = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -1318,11 +1633,46 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
       "./project/d.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "-17390360476-export const a = 10;const aLocal = 100;",
-      "./project/b.ts": "-6189287562-export const b = 10;const bLocal = 10;",
-      "./project/c.ts": "3248317647-import { a } from \"./a\";export const c = a;",
-      "./project/d.ts": "-19615769517-import { b } from \"./b\";export const d = b;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "-17390360476-export const a = 10;const aLocal = 100;",
+          "impliedFormat": 1
+        },
+        "version": "-17390360476-export const a = 10;const aLocal = 100;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "-6189287562-export const b = 10;const bLocal = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-6189287562-export const b = 10;const bLocal = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/c.ts": {
+        "original": {
+          "version": "3248317647-import { a } from \"./a\";export const c = a;",
+          "impliedFormat": 1
+        },
+        "version": "3248317647-import { a } from \"./a\";export const c = a;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/d.ts": {
+        "original": {
+          "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+          "impliedFormat": 1
+        },
+        "version": "-19615769517-import { b } from \"./b\";export const d = b;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -1349,6 +1699,6 @@ define("d", ["require", "exports", "b"], function (require, exports, b_1) {
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1224
+  "size": 1374
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/different-options.js b/tests/baselines/reference/tsc/incremental/different-options.js
index aa61c713d81c8..e26b036f17cc2 100644
--- a/tests/baselines/reference/tsc/incremental/different-options.js
+++ b/tests/baselines/reference/tsc/incremental/different-options.js
@@ -122,7 +122,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -146,43 +146,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +230,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1279
+  "size": 1369
 }
 
 
@@ -302,7 +312,7 @@ exports.d = b_1.b;
 {"version":3,"file":"d.js","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":";;;AAAA,yBAAwB;AAAa,QAAA,CAAC,GAAG,KAAC,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -326,43 +336,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -401,7 +421,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1296
+  "size": 1386
 }
 
 
@@ -470,7 +490,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -494,43 +514,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -568,7 +598,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1279
+  "size": 1369
 }
 
 
@@ -702,7 +732,7 @@ export declare const d = 10;
 {"version":3,"file":"d.d.ts","sourceRoot":"","sources":["d.ts"],"names":[],"mappings":"AAAwB,eAAO,MAAM,CAAC,KAAI,CAAC"}
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declaration":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -726,43 +756,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -802,7 +842,7 @@ export declare const d = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1320
+  "size": 1410
 }
 
 
@@ -855,7 +895,7 @@ export declare const d = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18487752940-export const a = 10;const aLocal = 10;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -879,43 +919,53 @@ export declare const d = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-18487752940-export const a = 10;const aLocal = 10;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-18487752940-export const a = 10;const aLocal = 10;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -953,7 +1003,7 @@ export declare const d = 10;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1279
+  "size": 1369
 }
 
 
@@ -1070,7 +1120,7 @@ var aLocal = 100;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1094,43 +1144,53 @@ var aLocal = 100;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1168,7 +1228,7 @@ var aLocal = 100;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1280
+  "size": 1370
 }
 
 
@@ -1272,7 +1332,7 @@ exports.d = b_1.b;
 //# sourceMappingURL=data:application/json;base64,eyJ2ZXJzaW9uIjozLCJmaWxlIjoiZC5qcyIsInNvdXJjZVJvb3QiOiIiLCJzb3VyY2VzIjpbImQudHMiXSwibmFtZXMiOltdLCJtYXBwaW5ncyI6Ijs7O0FBQUEseUJBQXdCO0FBQWEsUUFBQSxDQUFDLEdBQUcsS0FBQyxDQUFDIn0=
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"inlineSourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1296,43 +1356,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1371,7 +1441,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1303
+  "size": 1393
 }
 
 
@@ -1447,7 +1517,7 @@ exports.d = b_1.b;
 
 //// [/src/project/d.js.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1471,43 +1541,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1546,7 +1626,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1297
+  "size": 1387
 }
 
 
@@ -1644,7 +1724,7 @@ exports.d = b_1.b;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1668,43 +1748,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1743,7 +1833,7 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1302
+  "size": 1392
 }
 
 
@@ -1818,7 +1908,7 @@ exports.d = b_1.b;
 
 //// [/src/project/d.js.map] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n"},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n"},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n"},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n"}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17390360476-export const a = 10;const aLocal = 100;","signature":"-3497920574-export declare const a = 10;\n","impliedFormat":1},{"version":"-6189287562-export const b = 10;const bLocal = 10;","signature":"-3829150557-export declare const b = 10;\n","impliedFormat":1},{"version":"3248317647-import { a } from \"./a\";export const c = a;","signature":"-4160380540-export declare const c = 10;\n","impliedFormat":1},{"version":"-19615769517-import { b } from \"./b\";export const d = b;","signature":"-4491610523-export declare const d = 10;\n","impliedFormat":1}],"root":[[2,5]],"options":{"composite":true,"declarationMap":true,"sourceMap":true},"fileIdsList":[[2],[3]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,2,3,4,5],"latestChangedDtsFile":"./d.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1842,43 +1932,53 @@ exports.d = b_1.b;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-17390360476-export const a = 10;const aLocal = 100;",
-          "signature": "-3497920574-export declare const a = 10;\n"
+          "signature": "-3497920574-export declare const a = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-17390360476-export const a = 10;const aLocal = 100;",
-        "signature": "-3497920574-export declare const a = 10;\n"
+        "signature": "-3497920574-export declare const a = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6189287562-export const b = 10;const bLocal = 10;",
-          "signature": "-3829150557-export declare const b = 10;\n"
+          "signature": "-3829150557-export declare const b = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6189287562-export const b = 10;const bLocal = 10;",
-        "signature": "-3829150557-export declare const b = 10;\n"
+        "signature": "-3829150557-export declare const b = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "3248317647-import { a } from \"./a\";export const c = a;",
-          "signature": "-4160380540-export declare const c = 10;\n"
+          "signature": "-4160380540-export declare const c = 10;\n",
+          "impliedFormat": 1
         },
         "version": "3248317647-import { a } from \"./a\";export const c = a;",
-        "signature": "-4160380540-export declare const c = 10;\n"
+        "signature": "-4160380540-export declare const c = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-          "signature": "-4491610523-export declare const d = 10;\n"
+          "signature": "-4491610523-export declare const d = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-19615769517-import { b } from \"./b\";export const d = b;",
-        "signature": "-4491610523-export declare const d = 10;\n"
+        "signature": "-4491610523-export declare const d = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1918,6 +2018,6 @@ exports.d = b_1.b;
     "latestChangedDtsFile": "./d.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1319
+  "size": 1409
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/file-deleted-before-fixing-error-with-noEmitOnError.js b/tests/baselines/reference/tsc/incremental/file-deleted-before-fixing-error-with-noEmitOnError.js
index ae8dc00d1cfed..3b6867d92b4c8 100644
--- a/tests/baselines/reference/tsc/incremental/file-deleted-before-fixing-error-with-noEmitOnError.js
+++ b/tests/baselines/reference/tsc/incremental/file-deleted-before-fixing-error-with-noEmitOnError.js
@@ -71,7 +71,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts","../file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10927263693-export const x: 30 = \"hello\";","-7804761415-export class D { }"],"root":[2,3],"options":{"noEmitOnError":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"../file1.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type '\"hello\"' is not assignable to type '30'."}]],3],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts","../file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10927263693-export const x: 30 = \"hello\";","impliedFormat":1},{"version":"-7804761415-export class D { }","impliedFormat":1}],"root":[2,3],"options":{"noEmitOnError":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"../file1.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type '\"hello\"' is not assignable to type '30'."}]],3],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -85,19 +85,31 @@ Shape signatures in builder refreshed for::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../file1.ts": {
+        "original": {
+          "version": "-10927263693-export const x: 30 = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10927263693-export const x: 30 = \"hello\";",
-        "signature": "-10927263693-export const x: 30 = \"hello\";"
+        "signature": "-10927263693-export const x: 30 = \"hello\";",
+        "impliedFormat": "commonjs"
       },
       "../file2.ts": {
+        "original": {
+          "version": "-7804761415-export class D { }",
+          "impliedFormat": 1
+        },
         "version": "-7804761415-export class D { }",
-        "signature": "-7804761415-export class D { }"
+        "signature": "-7804761415-export class D { }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -144,7 +156,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 966
+  "size": 1044
 }
 
 
@@ -186,7 +198,7 @@ No shapes updated in the builder::
 
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10927263693-export const x: 30 = \"hello\";"],"root":[2],"options":{"noEmitOnError":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"../file1.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type '\"hello\"' is not assignable to type '30'."}]]],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10927263693-export const x: 30 = \"hello\";","impliedFormat":1}],"root":[2],"options":{"noEmitOnError":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"../file1.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type '\"hello\"' is not assignable to type '30'."}]]],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -199,15 +211,22 @@ No shapes updated in the builder::
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../file1.ts": {
+        "original": {
+          "version": "-10927263693-export const x: 30 = \"hello\";",
+          "impliedFormat": 1
+        },
         "version": "-10927263693-export const x: 30 = \"hello\";",
-        "signature": "-10927263693-export const x: 30 = \"hello\";"
+        "signature": "-10927263693-export const x: 30 = \"hello\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -245,6 +264,6 @@ No shapes updated in the builder::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 913
+  "size": 961
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/generates-typerefs-correctly.js b/tests/baselines/reference/tsc/incremental/generates-typerefs-correctly.js
index 47aa82720c4aa..f8bc529b15c35 100644
--- a/tests/baselines/reference/tsc/incremental/generates-typerefs-correctly.js
+++ b/tests/baselines/reference/tsc/incremental/generates-typerefs-correctly.js
@@ -124,7 +124,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../src/box.ts","../src/wrap.ts","../src/bug.js"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14267342128-export interface Box<T> {\n    unbox(): T\n}\n","signature":"-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n"},{"version":"-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n","signature":"-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n"},{"version":"-27771690375-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\n","signature":"-2569667161-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n"}],"root":[[2,4]],"options":{"checkJs":true,"composite":true,"outDir":"./"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./src/bug.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../src/box.ts","../src/wrap.ts","../src/bug.js"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14267342128-export interface Box<T> {\n    unbox(): T\n}\n","signature":"-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n","impliedFormat":1},{"version":"-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n","signature":"-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n","impliedFormat":1},{"version":"-27771690375-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\n","signature":"-2569667161-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n","impliedFormat":1}],"root":[[2,4]],"options":{"checkJs":true,"composite":true,"outDir":"./"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./src/bug.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -145,35 +145,43 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/box.ts": {
         "original": {
           "version": "-14267342128-export interface Box<T> {\n    unbox(): T\n}\n",
-          "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n"
+          "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14267342128-export interface Box<T> {\n    unbox(): T\n}\n",
-        "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n"
+        "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/wrap.ts": {
         "original": {
           "version": "-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n",
-          "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n"
+          "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n",
-        "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n"
+        "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/bug.js": {
         "original": {
           "version": "-27771690375-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\n",
-          "signature": "-2569667161-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n"
+          "signature": "-2569667161-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n",
+          "impliedFormat": 1
         },
         "version": "-27771690375-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\n",
-        "signature": "-2569667161-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n"
+        "signature": "-2569667161-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -209,7 +217,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./src/bug.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1674
+  "size": 1746
 }
 
 
@@ -279,7 +287,7 @@ exports.something = 1;
 
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../src/box.ts","../src/wrap.ts","../src/bug.js"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14267342128-export interface Box<T> {\n    unbox(): T\n}\n","signature":"-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n"},{"version":"-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n","signature":"-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n"},{"version":"-25729561895-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\nexport const something = 1;","signature":"-7681488146-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nexport const something: 1;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n"}],"root":[[2,4]],"options":{"checkJs":true,"composite":true,"outDir":"./"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./src/bug.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../src/box.ts","../src/wrap.ts","../src/bug.js"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14267342128-export interface Box<T> {\n    unbox(): T\n}\n","signature":"-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n","impliedFormat":1},{"version":"-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n","signature":"-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n","impliedFormat":1},{"version":"-25729561895-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\nexport const something = 1;","signature":"-7681488146-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nexport const something: 1;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n","impliedFormat":1}],"root":[[2,4]],"options":{"checkJs":true,"composite":true,"outDir":"./"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./src/bug.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -300,35 +308,43 @@ exports.something = 1;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/box.ts": {
         "original": {
           "version": "-14267342128-export interface Box<T> {\n    unbox(): T\n}\n",
-          "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n"
+          "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14267342128-export interface Box<T> {\n    unbox(): T\n}\n",
-        "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n"
+        "signature": "-15554117365-export interface Box<T> {\n    unbox(): T;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/wrap.ts": {
         "original": {
           "version": "-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n",
-          "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n"
+          "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n",
+          "impliedFormat": 1
         },
         "version": "-7208318765-export type Wrap<C> = {\n    [K in keyof C]: { wrapped: C[K] }\n}\n",
-        "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n"
+        "signature": "-7604652776-export type Wrap<C> = {\n    [K in keyof C]: {\n        wrapped: C[K];\n    };\n};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/bug.js": {
         "original": {
           "version": "-25729561895-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\nexport const something = 1;",
-          "signature": "-7681488146-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nexport const something: 1;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n"
+          "signature": "-7681488146-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nexport const something: 1;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n",
+          "impliedFormat": 1
         },
         "version": "-25729561895-import * as B from \"./box.js\"\nimport * as W from \"./wrap.js\"\n\n/**\n * @template {object} C\n * @param {C} source\n * @returns {W.Wrap<C>}\n */\nconst wrap = source => {\nthrow source\n}\n\n/**\n * @returns {B.Box<number>}\n */\nconst box = (n = 0) => ({ unbox: () => n })\n\nexport const bug = wrap({ n: box(1) });\nexport const something = 1;",
-        "signature": "-7681488146-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nexport const something: 1;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n"
+        "signature": "-7681488146-export const bug: W.Wrap<{\n    n: B.Box<number>;\n}>;\nexport const something: 1;\nimport * as B from \"./box.js\";\nimport * as W from \"./wrap.js\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -364,6 +380,6 @@ exports.something = 1;
     "latestChangedDtsFile": "./src/bug.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1729
+  "size": 1801
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-composite-discrepancies.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-composite-discrepancies.js
index 89e34f12e0d88..24acc4dea90a1 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-composite-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-composite-discrepancies.js
@@ -8,26 +8,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -99,26 +106,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -187,26 +201,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -278,26 +299,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -366,26 +394,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "1786859709-export class classC {\n    prop1 = 1;\n}"
+        "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -501,26 +536,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "1786859709-export class classC {\n    prop1 = 1;\n}"
+        "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -647,26 +689,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -738,26 +787,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -826,26 +882,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -917,26 +980,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1005,26 +1075,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "1786859709-export class classC {\n    prop1 = 1;\n}"
+        "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1140,26 +1217,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "1786859709-export class classC {\n    prop1 = 1;\n}"
+        "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1272,26 +1356,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "1786859709-export class classC {\n    prop1 = 1;\n}"
+        "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1407,26 +1498,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "1786859709-export class classC {\n    prop1 = 1;\n}"
+        "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1539,26 +1637,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1630,26 +1735,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1732,26 +1844,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1823,26 +1942,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1911,26 +2037,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2002,26 +2135,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-composite.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-composite.js
index 7b8ef0bd5fb45..81b115d7fbb2c 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-composite.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-composite.js
@@ -152,7 +152,7 @@ function someFunc(arguments) {
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,61 +178,75 @@ function someFunc(arguments) {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -290,7 +304,7 @@ function someFunc(arguments) {
     "latestChangedDtsFile": "./src/noChangeFileWithEmitSpecificError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2211
+  "size": 2337
 }
 
 
@@ -358,7 +372,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]],"emitSignatures":[[2,"-9508063301-export declare class classC {\n    prop: number;\n}\n"],[4,"-3531856636-export {};\n"],[5,"-3531856636-export {};\n"]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]],"emitSignatures":[[2,"-9508063301-export declare class classC {\n    prop: number;\n}\n"],[4,"-3531856636-export {};\n"],[5,"-3531856636-export {};\n"]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -384,53 +398,73 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -568,7 +602,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     "latestChangedDtsFile": "./src/noChangeFileWithEmitSpecificError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2921
+  "size": 3071
 }
 
 
@@ -598,7 +632,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 //// [/src/project/src/class.js] file written with same contents
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -624,61 +658,75 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -736,7 +784,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     "latestChangedDtsFile": "./src/noChangeFileWithEmitSpecificError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2211
+  "size": 2337
 }
 
 
@@ -868,7 +916,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -894,61 +942,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1050,7 +1112,7 @@ exports.classC = classC;
     "latestChangedDtsFile": "./src/class.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2801
+  "size": 2927
 }
 
 
@@ -1230,7 +1292,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]],"emitSignatures":[[2,"-12157283604-export declare class classC {\n    prop1: number;\n}\n"],[4,"-3531856636-export {};\n"],[5,"-3531856636-export {};\n"]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]],"emitSignatures":[[2,"-12157283604-export declare class classC {\n    prop1: number;\n}\n"],[4,"-3531856636-export {};\n"],[5,"-3531856636-export {};\n"]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1256,53 +1318,73 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1396,7 +1478,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./src/class.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2277
+  "size": 2427
 }
 
 
@@ -1439,7 +1521,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1465,61 +1547,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1577,7 +1673,7 @@ exports.classC = classC;
     "latestChangedDtsFile": "./src/class.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2183
+  "size": 2309
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental-declaration.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental-declaration.js
index d2abc1b2fb60a..924642b415625 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental-declaration.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental-declaration.js
@@ -153,7 +153,7 @@ function someFunc(arguments) {
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,61 +179,75 @@ function someFunc(arguments) {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -290,7 +304,7 @@ function someFunc(arguments) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2143
+  "size": 2269
 }
 
 
@@ -358,7 +372,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -384,53 +398,73 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -553,7 +587,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2700
+  "size": 2850
 }
 
 
@@ -587,7 +621,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.d.ts] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -613,61 +647,75 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -724,7 +772,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2143
+  "size": 2269
 }
 
 
@@ -859,7 +907,7 @@ exports.classC = classC;
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.d.ts] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -885,61 +933,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1040,7 +1102,7 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2761
+  "size": 2887
 }
 
 
@@ -1220,7 +1282,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1246,53 +1308,73 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1371,7 +1453,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2082
+  "size": 2232
 }
 
 
@@ -1417,7 +1499,7 @@ exports.classC = classC;
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.d.ts] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1443,61 +1525,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1554,7 +1650,7 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2143
+  "size": 2269
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental.js
index 9baa762b48676..6b73002c9300e 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-incremental.js
@@ -123,7 +123,7 @@ function someFunc(arguments) {
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"545032748-export class classC {\n    prop = 1;\n}","6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -149,40 +149,69 @@ function someFunc(arguments) {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
+        "original": {
+          "version": "545032748-export class classC {\n    prop = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "545032748-export class classC {\n    prop = 1;\n}"
+        "signature": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
+        "original": {
+          "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+          "impliedFormat": 1
+        },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -236,7 +265,7 @@ function someFunc(arguments) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1596
+  "size": 1782
 }
 
 
@@ -304,7 +333,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},"6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -330,56 +359,73 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -495,7 +541,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2580
+  "size": 2718
 }
 
 
@@ -527,7 +573,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -553,48 +599,71 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -648,7 +717,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1823
+  "size": 1985
 }
 
 
@@ -774,7 +843,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -800,48 +869,71 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -939,7 +1031,7 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2441
+  "size": 2603
 }
 
 
@@ -1119,7 +1211,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1145,48 +1237,71 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1250,7 +1365,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1856
+  "size": 2018
 }
 
 
@@ -1287,7 +1402,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1313,48 +1428,71 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1408,7 +1546,7 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1823
+  "size": 1985
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite-discrepancies.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite-discrepancies.js
index b88761cd4a26e..f3534dbb06870 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite-discrepancies.js
@@ -8,26 +8,33 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -99,26 +106,33 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
-        "version": "545032748-export class classC {\n    prop = 1;\n}"
+        "version": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
-        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
-        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
-        "version": "6714567633-export function writeLog(s: string) {\n}"
+        "version": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite.js
index 1ee0c553ffa94..e1ca6f6e2dace 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-composite.js
@@ -57,7 +57,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"545032748-export class classC {\n    prop = 1;\n}","6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5,6,7],"emitSignatures":[2,3,4,5,6,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5,6,7],"emitSignatures":[2,3,4,5,6,7]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -83,40 +83,69 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
+        "original": {
+          "version": "545032748-export class classC {\n    prop = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "545032748-export class classC {\n    prop = 1;\n}"
+        "signature": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
+        "original": {
+          "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+          "impliedFormat": 1
+        },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -207,7 +236,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1697
+  "size": 1883
 }
 
 
@@ -317,7 +346,7 @@ function someFunc(arguments) {
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/noChangeFileWithEmitSpecificError.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -343,61 +372,75 @@ function someFunc(arguments) {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -455,7 +498,7 @@ function someFunc(arguments) {
     "latestChangedDtsFile": "./src/noChangeFileWithEmitSpecificError.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2211
+  "size": 2337
 }
 
 
@@ -527,7 +570,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -553,61 +596,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -709,7 +766,7 @@ exports.classC = classC;
     "latestChangedDtsFile": "./src/class.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2801
+  "size": 2927
 }
 
 
@@ -729,7 +786,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]],"emitSignatures":[[2,"-12157283604-export declare class classC {\n    prop1: number;\n}\n"],[4,"-3531856636-export {};\n"],[5,"-3531856636-export {};\n"]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]],"emitSignatures":[[2,"-12157283604-export declare class classC {\n    prop1: number;\n}\n"],[4,"-3531856636-export {};\n"],[5,"-3531856636-export {};\n"]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -755,53 +812,73 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -895,7 +972,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./src/class.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2277
+  "size": 2427
 }
 
 
@@ -938,7 +1015,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"composite":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"latestChangedDtsFile":"./src/class.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -964,61 +1041,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1076,6 +1167,6 @@ exports.classC = classC;
     "latestChangedDtsFile": "./src/class.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2183
+  "size": 2309
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental-declaration.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental-declaration.js
index 05b0c77f3b4ab..5cd5e6d0a3955 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental-declaration.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental-declaration.js
@@ -58,7 +58,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"545032748-export class classC {\n    prop = 1;\n}","6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5,6,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5,6,7]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -84,40 +84,69 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
+        "original": {
+          "version": "545032748-export class classC {\n    prop = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "545032748-export class classC {\n    prop = 1;\n}"
+        "signature": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
+        "original": {
+          "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+          "impliedFormat": 1
+        },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -200,7 +229,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1668
+  "size": 1854
 }
 
 
@@ -310,7 +339,7 @@ function someFunc(arguments) {
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -336,61 +365,75 @@ function someFunc(arguments) {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -447,7 +490,7 @@ function someFunc(arguments) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2143
+  "size": 2269
 }
 
 
@@ -522,7 +565,7 @@ exports.classC = classC;
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.d.ts] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -548,61 +591,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -703,7 +760,7 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2761
+  "size": 2887
 }
 
 
@@ -723,7 +780,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,[4],3,[5]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -749,53 +806,73 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -874,7 +951,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2082
+  "size": 2232
 }
 
 
@@ -920,7 +997,7 @@ exports.classC = classC;
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.d.ts] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n"},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","signature":"8055010000-export declare function writeLog(s: string): void;\n","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","signature":"-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -946,61 +1023,75 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
         "original": {
           "version": "6714567633-export function writeLog(s: string) {\n}",
-          "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+          "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+          "impliedFormat": 1
         },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "8055010000-export declare function writeLog(s: string): void;\n"
+        "signature": "8055010000-export declare function writeLog(s: string): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
           "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-5615417221-declare function someFunc(arguments: boolean, ...rest: any[]): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1057,6 +1148,6 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2143
+  "size": 2269
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental.js b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental.js
index b10ebcc63abc4..aad0f454e1848 100644
--- a/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental.js
+++ b/tests/baselines/reference/tsc/incremental/noEmit-changes-with-initial-noEmit-incremental.js
@@ -57,7 +57,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"545032748-export class classC {\n    prop = 1;\n}","6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5,6,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,4,3,5,6,7]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -83,40 +83,69 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
+        "original": {
+          "version": "545032748-export class classC {\n    prop = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "545032748-export class classC {\n    prop = 1;\n}"
+        "signature": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
+        "original": {
+          "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+          "impliedFormat": 1
+        },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -196,7 +225,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1637
+  "size": 1823
 }
 
 
@@ -277,7 +306,7 @@ function someFunc(arguments) {
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"545032748-export class classC {\n    prop = 1;\n}","6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -303,40 +332,69 @@ function someFunc(arguments) {
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
+        "original": {
+          "version": "545032748-export class classC {\n    prop = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "545032748-export class classC {\n    prop = 1;\n}"
+        "signature": "545032748-export class classC {\n    prop = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
+        "original": {
+          "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+          "impliedFormat": 1
+        },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}"
+        "signature": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -390,7 +448,7 @@ function someFunc(arguments) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1596
+  "size": 1782
 }
 
 
@@ -458,7 +516,7 @@ exports.classC = classC;
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/src/indirectUse.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n"},"6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1786859709-export class classC {\n    prop1 = 1;\n}","signature":"-12157283604-export declare class classC {\n    prop1: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,[4,[{"file":"./src/directuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],3,[5,[{"file":"./src/indirectuse.ts","start":76,"length":4,"code":2551,"category":1,"messageText":"Property 'prop' does not exist on type 'classC'. Did you mean 'prop1'?","relatedInformation":[{"file":"./src/class.ts","start":26,"length":5,"messageText":"'prop1' is declared here.","category":3,"code":2728}]}]],6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -484,56 +542,73 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+          "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "1786859709-export class classC {\n    prop1 = 1;\n}",
-        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n"
+        "signature": "-12157283604-export declare class classC {\n    prop1: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
         "original": {
           "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -631,7 +706,7 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2543
+  "size": 2681
 }
 
 
@@ -651,7 +726,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]],"affectedFilesPendingEmit":[2,3]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -677,48 +752,71 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -782,7 +880,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1856
+  "size": 2018
 }
 
 
@@ -819,7 +917,7 @@ exports.classC = classC;
 
 //// [/src/project/src/indirectClass.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n"},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"},"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","6714567633-export function writeLog(s: string) {\n}",{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/class.ts","./src/indirectclass.ts","./src/directuse.ts","./src/indirectuse.ts","./src/nochangefile.ts","./src/nochangefilewithemitspecificerror.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"545032748-export class classC {\n    prop = 1;\n}","signature":"-9508063301-export declare class classC {\n    prop: number;\n}\n","impliedFormat":1},{"version":"6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}","signature":"9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;","impliedFormat":1},{"version":"6714567633-export function writeLog(s: string) {\n}","impliedFormat":1},{"version":"-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,7]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2],[5,1]],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,[7,[{"file":"./src/nochangefilewithemitspecificerror.ts","start":18,"length":18,"messageText":"Duplicate identifier 'arguments'. Compiler uses 'arguments' to initialize rest parameters.","category":1,"code":2396,"skippedOn":"noEmit"}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -845,48 +943,71 @@ exports.classC = classC;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/class.ts": {
         "original": {
           "version": "545032748-export class classC {\n    prop = 1;\n}",
-          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+          "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "545032748-export class classC {\n    prop = 1;\n}",
-        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n"
+        "signature": "-9508063301-export declare class classC {\n    prop: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectclass.ts": {
         "original": {
           "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+          "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+          "impliedFormat": 1
         },
         "version": "6324910780-import { classC } from './class';\nexport class indirectClass {\n    classC = new classC();\n}",
-        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n"
+        "signature": "9337978648-import { classC } from './class';\nexport declare class indirectClass {\n    classC: classC;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./src/directuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/indirectuse.ts": {
+        "original": {
+          "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+          "impliedFormat": 1
+        },
         "version": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
-        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;"
+        "signature": "-8953710208-import { indirectClass } from './indirectClass';\nnew indirectClass().classC.prop;",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefile.ts": {
+        "original": {
+          "version": "6714567633-export function writeLog(s: string) {\n}",
+          "impliedFormat": 1
+        },
         "version": "6714567633-export function writeLog(s: string) {\n}",
-        "signature": "6714567633-export function writeLog(s: string) {\n}"
+        "signature": "6714567633-export function writeLog(s: string) {\n}",
+        "impliedFormat": "commonjs"
       },
       "./src/nochangefilewithemitspecificerror.ts": {
         "original": {
           "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
         "signature": "-19339541508-function someFunc(arguments: boolean, ...rest: any[]) {\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -940,6 +1061,6 @@ exports.classC = classC;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1823
+  "size": 1985
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/serializing-error-chains.js b/tests/baselines/reference/tsc/incremental/serializing-error-chains.js
index 25f9c1e465a3c..2f6a0ce262fcf 100644
--- a/tests/baselines/reference/tsc/incremental/serializing-error-chains.js
+++ b/tests/baselines/reference/tsc/incremental/serializing-error-chains.js
@@ -77,7 +77,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"7198220534-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface ReadonlyArray<T> { readonly length: number }","affectsGlobalScope":true},{"version":"42569361247-declare namespace JSX {\n    interface ElementChildrenAttribute { children: {}; }\n    interface IntrinsicElements { div: {} }\n}\n\ndeclare var React: any;\n\ndeclare function Component(props: never): any;\ndeclare function Component(props: { children?: number }): any;\n(<Component>\n    <div />\n    <div />\n</Component>)","affectsGlobalScope":true}],"root":[2],"options":{"jsx":2,"module":99,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":265,"length":9,"messageText":"This JSX tag's 'children' prop expects a single child of type 'never', but multiple children were provided.","category":1,"code":2746},{"file":"./index.tsx","start":265,"length":9,"messageText":"This JSX tag's 'children' prop expects a single child of type 'number | undefined', but multiple children were provided.","category":1,"code":2746},{"file":"./index.tsx","start":265,"length":9,"code":2769,"category":1,"messageText":{"messageText":"No overload matches this call.","category":1,"code":2769,"next":[{"code":2746,"category":1,"messageText":"This JSX tag's 'children' prop expects a single child of type 'never', but multiple children were provided."},{"code":2746,"category":1,"messageText":"This JSX tag's 'children' prop expects a single child of type 'number | undefined', but multiple children were provided."}]},"relatedInformation":[]}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"7198220534-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface ReadonlyArray<T> { readonly length: number }","affectsGlobalScope":true,"impliedFormat":1},{"version":"42569361247-declare namespace JSX {\n    interface ElementChildrenAttribute { children: {}; }\n    interface IntrinsicElements { div: {} }\n}\n\ndeclare var React: any;\n\ndeclare function Component(props: never): any;\ndeclare function Component(props: { children?: number }): any;\n(<Component>\n    <div />\n    <div />\n</Component>)","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"jsx":2,"module":99,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":265,"length":9,"messageText":"This JSX tag's 'children' prop expects a single child of type 'never', but multiple children were provided.","category":1,"code":2746},{"file":"./index.tsx","start":265,"length":9,"messageText":"This JSX tag's 'children' prop expects a single child of type 'number | undefined', but multiple children were provided.","category":1,"code":2746},{"file":"./index.tsx","start":265,"length":9,"code":2769,"category":1,"messageText":{"messageText":"No overload matches this call.","category":1,"code":2769,"next":[{"code":2746,"category":1,"messageText":"This JSX tag's 'children' prop expects a single child of type 'never', but multiple children were provided."},{"code":2746,"category":1,"messageText":"This JSX tag's 'children' prop expects a single child of type 'number | undefined', but multiple children were provided."}]},"relatedInformation":[]}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -90,20 +90,24 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../lib/lib.d.ts": {
         "original": {
           "version": "7198220534-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface ReadonlyArray<T> { readonly length: number }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "7198220534-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface ReadonlyArray<T> { readonly length: number }",
         "signature": "7198220534-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };\ninterface ReadonlyArray<T> { readonly length: number }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "42569361247-declare namespace JSX {\n    interface ElementChildrenAttribute { children: {}; }\n    interface IntrinsicElements { div: {} }\n}\n\ndeclare var React: any;\n\ndeclare function Component(props: never): any;\ndeclare function Component(props: { children?: number }): any;\n(<Component>\n    <div />\n    <div />\n</Component>)",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "42569361247-declare namespace JSX {\n    interface ElementChildrenAttribute { children: {}; }\n    interface IntrinsicElements { div: {} }\n}\n\ndeclare var React: any;\n\ndeclare function Component(props: never): any;\ndeclare function Component(props: { children?: number }): any;\n(<Component>\n    <div />\n    <div />\n</Component>)",
         "signature": "42569361247-declare namespace JSX {\n    interface ElementChildrenAttribute { children: {}; }\n    interface IntrinsicElements { div: {} }\n}\n\ndeclare var React: any;\n\ndeclare function Component(props: never): any;\ndeclare function Component(props: { children?: number }): any;\n(<Component>\n    <div />\n    <div />\n</Component>)",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -169,7 +173,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2040
+  "size": 2076
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/ts-file-with-no-default-lib-that-augments-the-global-scope.js b/tests/baselines/reference/tsc/incremental/ts-file-with-no-default-lib-that-augments-the-global-scope.js
index 12b927048bb80..5ecb8b27274bd 100644
--- a/tests/baselines/reference/tsc/incremental/ts-file-with-no-default-lib-that-augments-the-global-scope.js
+++ b/tests/baselines/reference/tsc/incremental/ts-file-with-no-default-lib-that-augments-the-global-scope.js
@@ -66,7 +66,7 @@ export {};
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.esnext.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-2443389309-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />\n\ndeclare global {\n    interface Test {\n    }\n}\n\nexport {};\n","affectsGlobalScope":true}],"root":[2],"options":{"module":99,"outDir":"./dist","rootDir":"./src","target":99},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.esnext.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2443389309-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />\n\ndeclare global {\n    interface Test {\n    }\n}\n\nexport {};\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"module":99,"outDir":"./dist","rootDir":"./src","target":99},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -79,20 +79,24 @@ export {};
       "../../lib/lib.esnext.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-2443389309-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />\n\ndeclare global {\n    interface Test {\n    }\n}\n\nexport {};\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-2443389309-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />\n\ndeclare global {\n    interface Test {\n    }\n}\n\nexport {};\n",
         "signature": "-2443389309-/// <reference no-default-lib=\"true\"/>\n/// <reference lib=\"esnext\" />\n\ndeclare global {\n    interface Test {\n    }\n}\n\nexport {};\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -114,6 +118,6 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 922
+  "size": 958
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/tsbuildinfo-has-error.js b/tests/baselines/reference/tsc/incremental/tsbuildinfo-has-error.js
index 366ef98d4a3a0..6d4cdc05cc27b 100644
--- a/tests/baselines/reference/tsc/incremental/tsbuildinfo-has-error.js
+++ b/tests/baselines/reference/tsc/incremental/tsbuildinfo-has-error.js
@@ -39,7 +39,7 @@ exports.x = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -52,15 +52,22 @@ exports.x = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -76,7 +83,7 @@ exports.x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 680
+  "size": 728
 }
 
 
@@ -84,7 +91,7 @@ exports.x = 10;
 Change:: tsbuildinfo written has error
 Input::
 //// [/src/project/tsconfig.tsbuildinfo]
-Some random string{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+Some random string{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 
 
@@ -95,6 +102,6 @@ exitCode:: ExitStatus.Success
 
 //// [/src/project/main.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt] file written with same contents
diff --git a/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-discrepancies.js b/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-discrepancies.js
index 9821479e0a407..b973a15704506 100644
--- a/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-discrepancies.js
@@ -9,15 +9,18 @@ CleanBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "version": "5515933561-const x: 20 = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "version": "2026006654-const y = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -67,15 +70,18 @@ IncrementalBuild:
     "fileInfos": {
       "../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "version": "5515933561-const x: 20 = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "version": "2026006654-const y = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-with-outFile.js b/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-with-outFile.js
index 82fc73e8c15e5..dca7210519078 100644
--- a/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-with-outFile.js
+++ b/tests/baselines/reference/tsc/incremental/when-declarationMap-changes-with-outFile.js
@@ -49,7 +49,7 @@ var y = 10;
 
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","5029505981-const x = 10;","2026006654-const y = 10;"],"root":[2,3],"options":{"composite":true,"declaration":true,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-2781996726-declare const x = 10;\ndeclare const y = 10;\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"5029505981-const x = 10;","impliedFormat":1},{"version":"2026006654-const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-2781996726-declare const x = 10;\ndeclare const y = 10;\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -60,9 +60,30 @@ var y = 10;
       "./project/b.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "5029505981-const x = 10;",
-      "./project/b.ts": "2026006654-const y = 10;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "5029505981-const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "5029505981-const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "2026006654-const y = 10;",
+          "impliedFormat": 1
+        },
+        "version": "2026006654-const y = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -84,7 +105,7 @@ var y = 10;
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 837
+  "size": 927
 }
 
 
@@ -132,7 +153,7 @@ declare const y = 10;
 {"version":3,"file":"outFile.d.ts","sourceRoot":"","sources":["project/a.ts","project/b.ts"],"names":[],"mappings":"AAAA,QAAA,MAAM,CAAC,KAAK,CAAC;ACAb,QAAA,MAAM,CAAC,KAAK,CAAC"}
 
 //// [/src/outFile.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts"],"fileInfos":["3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","5029505981-const x = 10;","2026006654-const y = 10;"],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-2781996726-declare const x = 10;\ndeclare const y = 10;\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./project/a.ts","./project/b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","impliedFormat":1},{"version":"5029505981-const x = 10;","impliedFormat":1},{"version":"2026006654-const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-2781996726-declare const x = 10;\ndeclare const y = 10;\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -143,9 +164,30 @@ declare const y = 10;
       "./project/b.ts"
     ],
     "fileInfos": {
-      "../lib/lib.d.ts": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-      "./project/a.ts": "5029505981-const x = 10;",
-      "./project/b.ts": "2026006654-const y = 10;"
+      "../lib/lib.d.ts": {
+        "original": {
+          "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+          "impliedFormat": 1
+        },
+        "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
+        "impliedFormat": "commonjs"
+      },
+      "./project/a.ts": {
+        "original": {
+          "version": "5029505981-const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "5029505981-const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./project/b.ts": {
+        "original": {
+          "version": "2026006654-const y = 10;",
+          "impliedFormat": 1
+        },
+        "version": "2026006654-const y = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -168,6 +210,6 @@ declare const y = 10;
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 859
+  "size": 949
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/when-declarationMap-changes.js b/tests/baselines/reference/tsc/incremental/when-declarationMap-changes.js
index 8c244ad1d9108..5507a49f106ba 100644
--- a/tests/baselines/reference/tsc/incremental/when-declarationMap-changes.js
+++ b/tests/baselines/reference/tsc/incremental/when-declarationMap-changes.js
@@ -54,7 +54,7 @@ var y = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true},{"version":"2026006654-const y = 10;","signature":"-4332668712-declare const y = 10;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"declaration":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026006654-const y = 10;","signature":"-4332668712-declare const y = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -68,31 +68,37 @@ var y = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "2026006654-const y = 10;",
           "signature": "-4332668712-declare const y = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026006654-const y = 10;",
         "signature": "-4332668712-declare const y = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -119,7 +125,7 @@ var y = 10;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 987
+  "size": 1041
 }
 
 
@@ -145,7 +151,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5515933561-const x: 20 = 10;","signature":"-3041996843-declare const x: 20;\n","affectsGlobalScope":true},{"version":"2026006654-const y = 10;","signature":"-4332668712-declare const y = 10;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./a.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type '10' is not assignable to type '20'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[[2,["-4001438729-declare const x = 10;\n"]],[3,[]]],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5515933561-const x: 20 = 10;","signature":"-3041996843-declare const x: 20;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026006654-const y = 10;","signature":"-4332668712-declare const y = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./a.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type '10' is not assignable to type '20'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[[2,["-4001438729-declare const x = 10;\n"]],[3,[]]],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -159,31 +165,37 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "5515933561-const x: 20 = 10;",
           "signature": "-3041996843-declare const x: 20;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5515933561-const x: 20 = 10;",
         "signature": "-3041996843-declare const x: 20;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "2026006654-const y = 10;",
           "signature": "-4332668712-declare const y = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026006654-const y = 10;",
         "signature": "-4332668712-declare const y = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -245,7 +257,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1241
+  "size": 1295
 }
 
 
@@ -279,7 +291,7 @@ declare const y = 10;
 
 //// [/src/project/b.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true},{"version":"2026006654-const y = 10;","signature":"-4332668712-declare const y = 10;\n","affectsGlobalScope":true}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026006654-const y = 10;","signature":"-4332668712-declare const y = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declaration":true,"declarationMap":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -293,31 +305,37 @@ declare const y = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "2026006654-const y = 10;",
           "signature": "-4332668712-declare const y = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026006654-const y = 10;",
         "signature": "-4332668712-declare const y = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -345,6 +363,6 @@ declare const y = 10;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1009
+  "size": 1063
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/when-file-is-deleted.js b/tests/baselines/reference/tsc/incremental/when-file-is-deleted.js
index 4705539b29ff2..00f406276cd9c 100644
--- a/tests/baselines/reference/tsc/incremental/when-file-is-deleted.js
+++ b/tests/baselines/reference/tsc/incremental/when-file-is-deleted.js
@@ -71,7 +71,7 @@ exports.D = D;
 
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts","../file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-9819564552-export class  C { }","signature":"-8650565060-export declare class C {\n}\n"},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts","../file2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9819564552-export class  C { }","signature":"-8650565060-export declare class C {\n}\n","impliedFormat":1},{"version":"-7804761415-export class D { }","signature":"-8611429667-export declare class D {\n}\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -85,27 +85,33 @@ exports.D = D;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../file1.ts": {
         "original": {
           "version": "-9819564552-export class  C { }",
-          "signature": "-8650565060-export declare class C {\n}\n"
+          "signature": "-8650565060-export declare class C {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-9819564552-export class  C { }",
-        "signature": "-8650565060-export declare class C {\n}\n"
+        "signature": "-8650565060-export declare class C {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../file2.ts": {
         "original": {
           "version": "-7804761415-export class D { }",
-          "signature": "-8611429667-export declare class D {\n}\n"
+          "signature": "-8611429667-export declare class D {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7804761415-export class D { }",
-        "signature": "-8611429667-export declare class D {\n}\n"
+        "signature": "-8611429667-export declare class D {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -131,7 +137,7 @@ exports.D = D;
     "latestChangedDtsFile": "./file2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 951
+  "size": 1005
 }
 
 
@@ -147,7 +153,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-9819564552-export class  C { }","signature":"-8650565060-export declare class C {\n}\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../file1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9819564552-export class  C { }","signature":"-8650565060-export declare class C {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./file2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -160,19 +166,23 @@ exitCode:: ExitStatus.Success
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../file1.ts": {
         "original": {
           "version": "-9819564552-export class  C { }",
-          "signature": "-8650565060-export declare class C {\n}\n"
+          "signature": "-8650565060-export declare class C {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-9819564552-export class  C { }",
-        "signature": "-8650565060-export declare class C {\n}\n"
+        "signature": "-8650565060-export declare class C {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -193,6 +203,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./file2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 832
+  "size": 868
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/when-global-file-is-added,-the-signatures-are-updated.js b/tests/baselines/reference/tsc/incremental/when-global-file-is-added,-the-signatures-are-updated.js
index 72c98ec3080ad..da28260d5ec42 100644
--- a/tests/baselines/reference/tsc/incremental/when-global-file-is-added,-the-signatures-are-updated.js
+++ b/tests/baselines/reference/tsc/incremental/when-global-file-is-added,-the-signatures-are-updated.js
@@ -120,7 +120,7 @@ function main() { }
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true},{"version":"-21256825585-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\n","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2,5]],"referencedMap":[[3,1],[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21256825585-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\n","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2,5]],"referencedMap":[[3,1],[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -142,41 +142,49 @@ function main() { }
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filepresent.ts": {
         "original": {
           "version": "-12346563362-function something() { return 10; }",
           "signature": "-4903250974-declare function something(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12346563362-function something() { return 10; }",
         "signature": "-4903250974-declare function something(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/anotherfilewithsamereferenes.ts": {
         "original": {
           "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
           "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
         "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-21256825585-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\n",
           "signature": "-1399491038-declare function main(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-21256825585-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\n",
         "signature": "-1399491038-declare function main(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -214,7 +222,7 @@ function main() { }
     "latestChangedDtsFile": "./src/main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1496
+  "size": 1568
 }
 
 
@@ -327,7 +335,7 @@ something();
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true},{"version":"-24702349751-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2,5]],"referencedMap":[[3,1],[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-24702349751-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2,5]],"referencedMap":[[3,1],[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,41 +357,49 @@ something();
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filepresent.ts": {
         "original": {
           "version": "-12346563362-function something() { return 10; }",
           "signature": "-4903250974-declare function something(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12346563362-function something() { return 10; }",
         "signature": "-4903250974-declare function something(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/anotherfilewithsamereferenes.ts": {
         "original": {
           "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
           "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
         "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-24702349751-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();",
           "signature": "-1399491038-declare function main(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-24702349751-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();",
         "signature": "-1399491038-declare function main(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -421,7 +437,7 @@ something();
     "latestChangedDtsFile": "./src/main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1508
+  "size": 1580
 }
 
 
@@ -488,7 +504,7 @@ something();
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true},{"version":"-20086051197-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2,5]],"referencedMap":[[3,1],[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-20086051197-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2,5]],"referencedMap":[[3,1],[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./src/main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -510,41 +526,49 @@ something();
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filepresent.ts": {
         "original": {
           "version": "-12346563362-function something() { return 10; }",
           "signature": "-4903250974-declare function something(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12346563362-function something() { return 10; }",
         "signature": "-4903250974-declare function something(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/anotherfilewithsamereferenes.ts": {
         "original": {
           "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
           "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
         "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-20086051197-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();",
           "signature": "-1399491038-declare function main(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-20086051197-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();",
         "signature": "-1399491038-declare function main(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -582,7 +606,7 @@ something();
     "latestChangedDtsFile": "./src/main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1520
+  "size": 1592
 }
 
 
@@ -674,7 +698,7 @@ function foo() { return 20; }
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/newfile.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true},{"version":"5451387573-function foo() { return 20; }","signature":"517738360-declare function foo(): number;\n","affectsGlobalScope":true},{"version":"-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2,6],[2,4,6]],"referencedMap":[[3,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,5,4],"latestChangedDtsFile":"./src/newFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/anotherfilewithsamereferenes.ts","./src/newfile.ts","./src/main.ts","./src/filenotfound.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"5451387573-function foo() { return 20; }","signature":"517738360-declare function foo(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,5]],"options":{"composite":true},"fileIdsList":[[2,6],[2,4,6]],"referencedMap":[[3,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,5,4],"latestChangedDtsFile":"./src/newFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -702,51 +726,61 @@ function foo() { return 20; }
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filepresent.ts": {
         "original": {
           "version": "-12346563362-function something() { return 10; }",
           "signature": "-4903250974-declare function something(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12346563362-function something() { return 10; }",
         "signature": "-4903250974-declare function something(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/anotherfilewithsamereferenes.ts": {
         "original": {
           "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
           "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
         "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/newfile.ts": {
         "original": {
           "version": "5451387573-function foo() { return 20; }",
           "signature": "517738360-declare function foo(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5451387573-function foo() { return 20; }",
         "signature": "517738360-declare function foo(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();",
           "signature": "-1399491038-declare function main(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();",
         "signature": "-1399491038-declare function main(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -787,7 +821,7 @@ function foo() { return 20; }
     "latestChangedDtsFile": "./src/newFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1736
+  "size": 1826
 }
 
 
@@ -852,7 +886,7 @@ function something2() { return 20; }
 //// [/src/project/src/main.js] file written with same contents
 //// [/src/project/src/newFile.js] file written with same contents
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/filenotfound.ts","./src/anotherfilewithsamereferenes.ts","./src/newfile.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true},{"version":"-9011934479-function something2() { return 20; }","signature":"-11412869068-declare function something2(): number;\n","affectsGlobalScope":true},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true},{"version":"5451387573-function foo() { return 20; }","signature":"517738360-declare function foo(): number;\n","affectsGlobalScope":true},{"version":"-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true}],"root":[[2,6]],"options":{"composite":true},"fileIdsList":[[2,3],[2,3,5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,4,3,2,6,5],"latestChangedDtsFile":"./src/fileNotFound.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/filenotfound.ts","./src/anotherfilewithsamereferenes.ts","./src/newfile.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9011934479-function something2() { return 20; }","signature":"-11412869068-declare function something2(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"5451387573-function foo() { return 20; }","signature":"517738360-declare function foo(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,6]],"options":{"composite":true},"fileIdsList":[[2,3],[2,3,5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,4,3,2,6,5],"latestChangedDtsFile":"./src/fileNotFound.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -880,61 +914,73 @@ function something2() { return 20; }
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filepresent.ts": {
         "original": {
           "version": "-12346563362-function something() { return 10; }",
           "signature": "-4903250974-declare function something(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12346563362-function something() { return 10; }",
         "signature": "-4903250974-declare function something(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filenotfound.ts": {
         "original": {
           "version": "-9011934479-function something2() { return 20; }",
           "signature": "-11412869068-declare function something2(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-9011934479-function something2() { return 20; }",
         "signature": "-11412869068-declare function something2(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/anotherfilewithsamereferenes.ts": {
         "original": {
           "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
           "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
         "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/newfile.ts": {
         "original": {
           "version": "5451387573-function foo() { return 20; }",
           "signature": "517738360-declare function foo(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5451387573-function foo() { return 20; }",
         "signature": "517738360-declare function foo(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();",
           "signature": "-1399491038-declare function main(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3581559188-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();",
         "signature": "-1399491038-declare function main(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -977,7 +1023,7 @@ function something2() { return 20; }
     "latestChangedDtsFile": "./src/fileNotFound.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1900
+  "size": 2008
 }
 
 
@@ -1036,7 +1082,7 @@ something();
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/filenotfound.ts","./src/anotherfilewithsamereferenes.ts","./src/newfile.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true},{"version":"-9011934479-function something2() { return 20; }","signature":"-11412869068-declare function something2(): number;\n","affectsGlobalScope":true},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true},{"version":"5451387573-function foo() { return 20; }","signature":"517738360-declare function foo(): number;\n","affectsGlobalScope":true},{"version":"3987942182-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();something();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true}],"root":[[2,6]],"options":{"composite":true},"fileIdsList":[[2,3],[2,3,5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,4,3,2,6,5],"latestChangedDtsFile":"./src/fileNotFound.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/filepresent.ts","./src/filenotfound.ts","./src/anotherfilewithsamereferenes.ts","./src/newfile.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12346563362-function something() { return 10; }","signature":"-4903250974-declare function something(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9011934479-function something2() { return 20; }","signature":"-11412869068-declare function something2(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n","signature":"-11249446897-declare function anotherFileWithSameReferenes(): void;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"5451387573-function foo() { return 20; }","signature":"517738360-declare function foo(): number;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3987942182-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();something();","signature":"-1399491038-declare function main(): void;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,6]],"options":{"composite":true},"fileIdsList":[[2,3],[2,3,5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,4,3,2,6,5],"latestChangedDtsFile":"./src/fileNotFound.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1064,61 +1110,73 @@ something();
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filepresent.ts": {
         "original": {
           "version": "-12346563362-function something() { return 10; }",
           "signature": "-4903250974-declare function something(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-12346563362-function something() { return 10; }",
         "signature": "-4903250974-declare function something(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/filenotfound.ts": {
         "original": {
           "version": "-9011934479-function something2() { return 20; }",
           "signature": "-11412869068-declare function something2(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-9011934479-function something2() { return 20; }",
         "signature": "-11412869068-declare function something2(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/anotherfilewithsamereferenes.ts": {
         "original": {
           "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
           "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-28237004260-/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction anotherFileWithSameReferenes() { }\n",
         "signature": "-11249446897-declare function anotherFileWithSameReferenes(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/newfile.ts": {
         "original": {
           "version": "5451387573-function foo() { return 20; }",
           "signature": "517738360-declare function foo(): number;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5451387573-function foo() { return 20; }",
         "signature": "517738360-declare function foo(): number;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
         "original": {
           "version": "3987942182-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();something();",
           "signature": "-1399491038-declare function main(): void;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3987942182-/// <reference path=\"./newFile.ts\"/>\n/// <reference path=\"./filePresent.ts\"/>\n/// <reference path=\"./fileNotFound.ts\"/>\nfunction main() { }\nsomething();something();foo();something();",
         "signature": "-1399491038-declare function main(): void;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1161,6 +1219,6 @@ something();
     "latestChangedDtsFile": "./src/fileNotFound.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1911
+  "size": 2019
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project-discrepancies.js b/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project-discrepancies.js
index 7cad5071ccf2a..2473886a85b18 100644
--- a/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project-discrepancies.js
+++ b/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project-discrepancies.js
@@ -8,15 +8,18 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "version": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "version": "777969115-class class2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -39,15 +42,18 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "version": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "version": "777969115-class class2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -79,15 +85,18 @@ CleanBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "version": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "version": "777969115-class class2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -110,15 +119,18 @@ IncrementalBuild:
     "fileInfos": {
       "../../../lib/lib.d.ts": {
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "version": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "version": "777969115-class class2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
diff --git a/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project.js b/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project.js
index ac61b62e46bba..4a1d09f04de43 100644
--- a/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project.js
+++ b/tests/baselines/reference/tsc/incremental/when-new-file-is-added-to-the-referenced-project.js
@@ -69,7 +69,7 @@ var class2 = /** @class */ (function () {
 
 
 //// [/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -83,30 +83,36 @@ var class2 = /** @class */ (function () {
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +133,7 @@ var class2 = /** @class */ (function () {
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 933
+  "size": 987
 }
 
 
@@ -176,7 +182,7 @@ exitCode:: ExitStatus.Success
 
 //// [/src/projects/project2/class2.js] file written with same contents
 //// [/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -191,39 +197,47 @@ exitCode:: ExitStatus.Success
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.d.ts": {
         "original": {
           "version": "-3469165364-declare class class3 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469165364-declare class class3 {}",
         "signature": "-3469165364-declare class class3 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -245,7 +259,7 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1037
+  "size": 1109
 }
 
 
@@ -292,7 +306,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
 
 //// [/src/projects/project2/class2.js] file written with same contents
 //// [/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -306,30 +320,36 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -348,7 +368,7 @@ exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 929
+  "size": 983
 }
 
 
@@ -367,7 +387,7 @@ exitCode:: ExitStatus.Success
 
 //// [/src/projects/project2/class2.js] file written with same contents
 //// [/src/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/src/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -382,39 +402,47 @@ exitCode:: ExitStatus.Success
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.d.ts": {
         "original": {
           "version": "-3469165364-declare class class3 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469165364-declare class class3 {}",
         "signature": "-3469165364-declare class class3 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -436,6 +464,6 @@ exitCode:: ExitStatus.Success
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1037
+  "size": 1109
 }
 
diff --git a/tests/baselines/reference/tsc/incremental/when-passing-filename-for-buildinfo-on-commandline.js b/tests/baselines/reference/tsc/incremental/when-passing-filename-for-buildinfo-on-commandline.js
index 5b3e6c7dd150e..15c6e17079b8e 100644
--- a/tests/baselines/reference/tsc/incremental/when-passing-filename-for-buildinfo-on-commandline.js
+++ b/tests/baselines/reference/tsc/incremental/when-passing-filename-for-buildinfo-on-commandline.js
@@ -41,7 +41,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"options":{"module":1,"target":1,"tsBuildInfoFile":"./.tsbuildinfo"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"options":{"module":1,"target":1,"tsBuildInfoFile":"./.tsbuildinfo"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/.tsbuildinfo.readable.baseline.txt]
 {
@@ -54,15 +54,22 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -83,7 +90,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 753
+  "size": 801
 }
 
 //// [/src/project/src/main.js]
diff --git a/tests/baselines/reference/tsc/incremental/when-passing-rootDir-from-commandline.js b/tests/baselines/reference/tsc/incremental/when-passing-rootDir-from-commandline.js
index df69cc47950d7..aea016f4f1522 100644
--- a/tests/baselines/reference/tsc/incremental/when-passing-rootDir-from-commandline.js
+++ b/tests/baselines/reference/tsc/incremental/when-passing-rootDir-from-commandline.js
@@ -41,7 +41,7 @@ exports.x = 10;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"options":{"outDir":"./dist","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"options":{"outDir":"./dist","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -54,15 +54,22 @@ exports.x = 10;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -82,7 +89,7 @@ exports.x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 732
+  "size": 780
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/when-passing-rootDir-is-in-the-tsconfig.js b/tests/baselines/reference/tsc/incremental/when-passing-rootDir-is-in-the-tsconfig.js
index 1cc2f031f1fdc..5753832901ece 100644
--- a/tests/baselines/reference/tsc/incremental/when-passing-rootDir-is-in-the-tsconfig.js
+++ b/tests/baselines/reference/tsc/incremental/when-passing-rootDir-is-in-the-tsconfig.js
@@ -42,7 +42,7 @@ exports.x = 10;
 
 
 //// [/src/project/built/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../lib/lib.d.ts","../src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"options":{"outDir":"./","rootDir":".."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../lib/lib.d.ts","../src/main.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"options":{"outDir":"./","rootDir":".."},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/built/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -55,15 +55,22 @@ exports.x = 10;
       "../../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -83,7 +90,7 @@ exports.x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 729
+  "size": 777
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/when-project-has-strict-true.js b/tests/baselines/reference/tsc/incremental/when-project-has-strict-true.js
index 1d959919f54d6..6c368bc3f8f41 100644
--- a/tests/baselines/reference/tsc/incremental/when-project-has-strict-true.js
+++ b/tests/baselines/reference/tsc/incremental/when-project-has-strict-true.js
@@ -56,7 +56,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-7660182596-export class class1 {}"],"root":[2],"options":{"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./class1.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7660182596-export class class1 {}","impliedFormat":1}],"root":[2],"options":{"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"affectedFilesPendingEmit":[2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -69,15 +69,22 @@ Shape signatures in builder refreshed for::
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class1.ts": {
+        "original": {
+          "version": "-7660182596-export class class1 {}",
+          "impliedFormat": 1
+        },
         "version": "-7660182596-export class class1 {}",
-        "signature": "-7660182596-export class class1 {}"
+        "signature": "-7660182596-export class class1 {}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,7 +109,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 740
+  "size": 788
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/with-noEmitOnError-semantic-errors.js b/tests/baselines/reference/tsc/incremental/with-noEmitOnError-semantic-errors.js
index fd45b37497c47..f79c9e65be3de 100644
--- a/tests/baselines/reference/tsc/incremental/with-noEmitOnError-semantic-errors.js
+++ b/tests/baselines/reference/tsc/incremental/with-noEmitOnError-semantic-errors.js
@@ -83,7 +83,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,23 +103,40 @@ Shape signatures in builder refreshed for::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
+          "impliedFormat": 1
+        },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;"
+        "signature": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -178,7 +195,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1147
+  "size": 1255
 }
 
 
@@ -277,7 +294,7 @@ console.log("hi");
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -297,27 +314,41 @@ console.log("hi");
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -350,7 +381,7 @@ console.log("hi");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1026
+  "size": 1122
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/with-noEmitOnError-syntax-errors.js b/tests/baselines/reference/tsc/incremental/with-noEmitOnError-syntax-errors.js
index b5a10423405f3..46158052c072a 100644
--- a/tests/baselines/reference/tsc/incremental/with-noEmitOnError-syntax-errors.js
+++ b/tests/baselines/reference/tsc/incremental/with-noEmitOnError-syntax-errors.js
@@ -86,7 +86,7 @@ Shape signatures in builder refreshed for::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,23 +106,40 @@ Shape signatures in builder refreshed for::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -169,7 +186,7 @@ Shape signatures in builder refreshed for::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1020
+  "size": 1128
 }
 
 
@@ -272,7 +289,7 @@ console.log("hi");
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -292,27 +309,41 @@ console.log("hi");
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -345,7 +376,7 @@ console.log("hi");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1035
+  "size": 1131
 }
 
 
diff --git a/tests/baselines/reference/tsc/incremental/with-only-dts-files.js b/tests/baselines/reference/tsc/incremental/with-only-dts-files.js
index b1a257c1b686b..56a135d14b6bb 100644
--- a/tests/baselines/reference/tsc/incremental/with-only-dts-files.js
+++ b/tests/baselines/reference/tsc/incremental/with-only-dts-files.js
@@ -32,7 +32,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/another.d.ts","./src/main.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-13729955264-export const y = 10;","-10726455937-export const x = 10;"],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/another.d.ts","./src/main.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -46,19 +46,31 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/another.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./src/main.d.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -79,7 +91,7 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 747
+  "size": 825
 }
 
 
@@ -108,7 +120,7 @@ exitCode:: ExitStatus.Success
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/another.d.ts","./src/main.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-13729955264-export const y = 10;","-10808461502-export const x = 10;export const xy = 100;"],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/another.d.ts","./src/main.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-10808461502-export const x = 10;export const xy = 100;","impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -122,19 +134,31 @@ exitCode:: ExitStatus.Success
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/another.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./src/main.d.ts": {
+        "original": {
+          "version": "-10808461502-export const x = 10;export const xy = 100;",
+          "impliedFormat": 1
+        },
         "version": "-10808461502-export const x = 10;export const xy = 100;",
-        "signature": "-10808461502-export const x = 10;export const xy = 100;"
+        "signature": "-10808461502-export const x = 10;export const xy = 100;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -155,6 +179,6 @@ exitCode:: ExitStatus.Success
     ]
   },
   "version": "FakeTSVersion",
-  "size": 769
+  "size": 847
 }
 
diff --git a/tests/baselines/reference/tsc/libraryResolution/with-config-with-redirection.js b/tests/baselines/reference/tsc/libraryResolution/with-config-with-redirection.js
index c01879c5760b1..d944b0a8c19e4 100644
--- a/tests/baselines/reference/tsc/libraryResolution/with-config-with-redirection.js
+++ b/tests/baselines/reference/tsc/libraryResolution/with-config-with-redirection.js
@@ -191,6 +191,21 @@ export const y = 10;
 
 Output::
 /home/src/lib/tsc -p project1 --explainFiles
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -206,6 +221,13 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -221,6 +243,13 @@ File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -236,10 +265,34 @@ File '/home/src/projects/node_modules/@typescript/lib-es5/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -258,6 +311,13 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-webworker/index.d.ts
   Library referenced via 'webworker' from file 'project1/file2.ts'
 node_modules/@typescript/lib-scripthost/index.d.ts
@@ -373,7 +433,7 @@ exports.x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -394,74 +454,103 @@ exports.x = "type1";
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -499,6 +588,6 @@ exports.x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1763
+  "size": 1979
 }
 
diff --git a/tests/baselines/reference/tsc/libraryResolution/with-config.js b/tests/baselines/reference/tsc/libraryResolution/with-config.js
index f7864aac22cb3..abfa58e8fb57a 100644
--- a/tests/baselines/reference/tsc/libraryResolution/with-config.js
+++ b/tests/baselines/reference/tsc/libraryResolution/with-config.js
@@ -152,6 +152,21 @@ export const y = 10;
 
 Output::
 /home/src/lib/tsc -p project1 --explainFiles
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -178,6 +193,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -204,6 +223,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -230,10 +253,31 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -263,6 +307,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
   Library 'lib.es5.d.ts' specified in compilerOptions
@@ -378,7 +426,7 @@ exports.x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -399,74 +447,103 @@ exports.x = "type1";
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -504,6 +581,6 @@ exports.x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1667
+  "size": 1883
 }
 
diff --git a/tests/baselines/reference/tsc/libraryResolution/without-config-with-redirection.js b/tests/baselines/reference/tsc/libraryResolution/without-config-with-redirection.js
index 95c948bd17ac6..7006320e89b29 100644
--- a/tests/baselines/reference/tsc/libraryResolution/without-config-with-redirection.js
+++ b/tests/baselines/reference/tsc/libraryResolution/without-config-with-redirection.js
@@ -191,6 +191,31 @@ export const y = 10;
 
 Output::
 /home/src/lib/tsc project1/core.d.ts project1/utils.d.ts project1/file.ts project1/index.ts project1/file2.ts --lib es5,dom --traceResolution --explainFiles
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -204,6 +229,13 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -217,6 +249,13 @@ File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -230,6 +269,13 @@ File '/home/src/projects/node_modules/@typescript/lib-es5/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -243,6 +289,13 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@typescript/lib-webworker/index.d.ts
   Library referenced via 'webworker' from file 'project1/file2.ts'
 node_modules/@typescript/lib-scripthost/index.d.ts
diff --git a/tests/baselines/reference/tsc/libraryResolution/without-config.js b/tests/baselines/reference/tsc/libraryResolution/without-config.js
index e55f6a5d8d971..1284bd16c6ce8 100644
--- a/tests/baselines/reference/tsc/libraryResolution/without-config.js
+++ b/tests/baselines/reference/tsc/libraryResolution/without-config.js
@@ -152,6 +152,31 @@ export const y = 10;
 
 Output::
 /home/src/lib/tsc project1/core.d.ts project1/utils.d.ts project1/file.ts project1/index.ts project1/file2.ts --lib es5,dom --traceResolution --explainFiles
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -175,6 +200,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -198,6 +227,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -221,6 +254,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -244,6 +281,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
   Library 'lib.es5.d.ts' specified in compilerOptions
diff --git a/tests/baselines/reference/tsc/listFilesOnly/combined-with-incremental.js b/tests/baselines/reference/tsc/listFilesOnly/combined-with-incremental.js
index 8e195ace5eb1d..3676ba45ae471 100644
--- a/tests/baselines/reference/tsc/listFilesOnly/combined-with-incremental.js
+++ b/tests/baselines/reference/tsc/listFilesOnly/combined-with-incremental.js
@@ -49,7 +49,7 @@ exports.x = 1;
 
 
 //// [/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../lib/lib.d.ts","./test.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-12038591281-export const x = 1;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../lib/lib.d.ts","./test.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12038591281-export const x = 1;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -62,15 +62,22 @@ exports.x = 1;
       "../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./test.ts": {
+        "original": {
+          "version": "-12038591281-export const x = 1;",
+          "impliedFormat": 1
+        },
         "version": "-12038591281-export const x = 1;",
-        "signature": "-12038591281-export const x = 1;"
+        "signature": "-12038591281-export const x = 1;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -86,7 +93,7 @@ exports.x = 1;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 676
+  "size": 724
 }
 
 
diff --git a/tests/baselines/reference/tsc/moduleResolution/alternateResult.js b/tests/baselines/reference/tsc/moduleResolution/alternateResult.js
index b8d9bc71112cb..5a900934d8c5c 100644
--- a/tests/baselines/reference/tsc/moduleResolution/alternateResult.js
+++ b/tests/baselines/reference/tsc/moduleResolution/alternateResult.js
@@ -380,7 +380,7 @@ Shape signatures in builder refreshed for::
 
 //// [/home/src/projects/project/index.mjs]
 "use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
+export {};
 
 
 //// [/home/src/projects/project/tsconfig.tsbuildinfo]
diff --git a/tests/baselines/reference/tsc/moduleResolution/pnpm-style-layout.js b/tests/baselines/reference/tsc/moduleResolution/pnpm-style-layout.js
index 37d45dc691a05..5461a053b77e1 100644
--- a/tests/baselines/reference/tsc/moduleResolution/pnpm-style-layout.js
+++ b/tests/baselines/reference/tsc/moduleResolution/pnpm-style-layout.js
@@ -150,6 +150,8 @@ declare const console: { log(msg: any): void; };
 
 /a/lib/tsc.js --traceResolution --explainFiles
 Output::
+File '/home/src/projects/component-type-checker/packages/app/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/component-type-checker/packages/app/package.json'.
 ======== Resolving module '@component-type-checker/sdk' from '/home/src/projects/component-type-checker/packages/app/src/app.tsx'. ========
 Explicitly specified module resolution kind: 'Node10'.
 'baseUrl' option is set to '/home/src/projects/component-type-checker/packages/app', using this value to resolve non-relative module name '@component-type-checker/sdk'.
@@ -216,6 +218,8 @@ File '/home/src/projects/component-type-checker/packages/app/node_modules/@compo
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/component-type-checker/packages/app/node_modules/@component-type-checker/button/src/index.ts', result '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/src/index.ts'.
 ======== Module name '@component-type-checker/button' was successfully resolved to '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/src/index.ts' with Package ID '@component-type-checker/button/src/index.ts@0.0.2'. ========
+File '/home/src/projects/component-type-checker/packages/sdk/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/component-type-checker/packages/sdk/package.json'.
 ======== Resolving module '@component-type-checker/components' from '/home/src/projects/component-type-checker/packages/sdk/src/index.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 'baseUrl' option is set to '/home/src/projects/component-type-checker/packages/app', using this value to resolve non-relative module name '@component-type-checker/components'.
@@ -240,6 +244,8 @@ Found 'package.json' at '/home/src/projects/component-type-checker/node_modules/
 Found peerDependency '@component-type-checker/button' with '0.0.1' version.
 Resolving real path for '/home/src/projects/component-type-checker/packages/sdk/node_modules/@component-type-checker/components/src/index.ts', result '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.1/node_modules/@component-type-checker/components/src/index.ts'.
 ======== Module name '@component-type-checker/components' was successfully resolved to '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.1/node_modules/@component-type-checker/components/src/index.ts' with Package ID '@component-type-checker/components/src/index.ts@0.0.1+@component-type-checker/button@0.0.1'. ========
+File '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.1/node_modules/@component-type-checker/components/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.1/node_modules/@component-type-checker/components/package.json'.
 ======== Resolving module '@component-type-checker/button' from '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.1/node_modules/@component-type-checker/components/src/index.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 'baseUrl' option is set to '/home/src/projects/component-type-checker/packages/app', using this value to resolve non-relative module name '@component-type-checker/button'.
@@ -265,6 +271,10 @@ File '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-ty
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.1/node_modules/@component-type-checker/button/src/index.ts', result '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.1/node_modules/@component-type-checker/button/src/index.ts'.
 ======== Module name '@component-type-checker/button' was successfully resolved to '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.1/node_modules/@component-type-checker/button/src/index.ts' with Package ID '@component-type-checker/button/src/index.ts@0.0.1'. ========
+File '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.1/node_modules/@component-type-checker/button/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.1/node_modules/@component-type-checker/button/package.json'.
+File '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.2/node_modules/@component-type-checker/components/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.2/node_modules/@component-type-checker/components/package.json'.
 ======== Resolving module '@component-type-checker/button' from '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.2/node_modules/@component-type-checker/components/src/index.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 'baseUrl' option is set to '/home/src/projects/component-type-checker/packages/app', using this value to resolve non-relative module name '@component-type-checker/button'.
@@ -290,6 +300,8 @@ File '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-ty
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+components@0.0.1_@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/src/index.ts', result '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/src/index.ts'.
 ======== Module name '@component-type-checker/button' was successfully resolved to '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/src/index.ts' with Package ID '@component-type-checker/button/src/index.ts@0.0.2'. ========
+File '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/component-type-checker/node_modules/.pnpm/@component-type-checker+button@0.0.2/node_modules/@component-type-checker/button/package.json'.
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/component-type-checker/packages/app/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -316,6 +328,9 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 ../../../../../../a/lib/lib.es5.d.ts
   Library 'lib.es5.d.ts' specified in compilerOptions
 ../../node_modules/.pnpm/@component-type-checker+button@0.0.1/node_modules/@component-type-checker/button/src/index.ts
diff --git a/tests/baselines/reference/tsc/projectReferences/default-import-interop-uses-referenced-project-settings.js b/tests/baselines/reference/tsc/projectReferences/default-import-interop-uses-referenced-project-settings.js
new file mode 100644
index 0000000000000..866c833d4187b
--- /dev/null
+++ b/tests/baselines/reference/tsc/projectReferences/default-import-interop-uses-referenced-project-settings.js
@@ -0,0 +1,96 @@
+currentDirectory:: / useCaseSensitiveFileNames: false
+Input::
+//// [/app/src/index.ts]
+
+                    import local from "./local"; // Error
+                    import esm from "esm-package"; // Error
+                    import referencedSource from "../../lib/src/a"; // Error
+                    import referencedDeclaration from "../../lib/dist/a"; // Error
+                    import ambiguous from "ambiguous-package"; // Ok
+
+//// [/app/src/local.ts]
+export const local = 0;
+
+//// [/app/tsconfig.json]
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "rootDir": "src",
+    "outDir": "dist"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../lib"
+    }
+  ]
+}
+
+//// [/lib/dist/a.d.ts]
+export declare const a = 0;
+
+//// [/lib/lib.d.ts]
+/// <reference no-default-lib="true"/>
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+//// [/lib/src/a.ts]
+export const a = 0;
+
+//// [/lib/tsconfig.json]
+{
+  "compilerOptions": {
+    "composite": true,
+    "declaration": true,
+    "rootDir": "src",
+    "outDir": "dist",
+    "module": "esnext",
+    "moduleResolution": "bundler"
+  },
+  "include": [
+    "src"
+  ]
+}
+
+//// [/node_modules/ambiguous-package/index.d.ts]
+export declare const ambiguous: number;
+
+//// [/node_modules/ambiguous-package/package.json]
+{ "name": "ambiguous-package" }
+
+//// [/node_modules/esm-package/index.d.ts]
+export declare const esm: number;
+
+//// [/node_modules/esm-package/package.json]
+{ "name": "esm-package", "type": "module" }
+
+
+
+Output::
+/lib/tsc --p app --pretty false
+app/src/index.ts(2,28): error TS2613: Module '"/app/src/local"' has no default export. Did you mean to use 'import { local } from "/app/src/local"' instead?
+app/src/index.ts(3,28): error TS2613: Module '"/node_modules/esm-package/index"' has no default export. Did you mean to use 'import { esm } from "/node_modules/esm-package/index"' instead?
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsGenerated
+
+
+//// [/app/dist/index.js]
+export {};
+
+
+//// [/app/dist/local.js]
+export var local = 0;
+
+
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js b/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js
index 0816fe3df0c60..722deb743b815 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/default-setup-was-created-correctly.js
@@ -60,7 +60,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/primary/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -73,19 +73,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a.ts": {
         "original": {
           "version": "-3531955686-export { };",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-3531955686-export { };",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -106,6 +110,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 796
+  "size": 832
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js b/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js
index 48e093b0f27af..3cb0dd753d265 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/doesnt-infer-the-rootDir-from-source-paths.js
@@ -46,7 +46,7 @@ exports.m = 3;
 
 
 //// [/alpha/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../src/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-12181672471-export const m: number = 3;","signature":"-6260611917-export declare const m: number;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./src/a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../src/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12181672471-export const m: number = 3;","signature":"-6260611917-export declare const m: number;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1],"latestChangedDtsFile":"./src/a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/alpha/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -59,19 +59,23 @@ exports.m = 3;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/a.ts": {
         "original": {
           "version": "-12181672471-export const m: number = 3;",
-          "signature": "-6260611917-export declare const m: number;\n"
+          "signature": "-6260611917-export declare const m: number;\n",
+          "impliedFormat": 1
         },
         "version": "-12181672471-export const m: number = 3;",
-        "signature": "-6260611917-export declare const m: number;\n"
+        "signature": "-6260611917-export declare const m: number;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -92,6 +96,6 @@ exports.m = 3;
     "latestChangedDtsFile": "./src/a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 842
+  "size": 878
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js
index 199d5194e926a..b756fb2454e93 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-a-file-is-outside-the-rootdir.js
@@ -60,7 +60,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/alpha/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../../beta/b.ts","../src/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3360792065-export { }","signature":"-3531856636-export {};\n"},{"version":"-5654511483-import * as b from '../../beta/b'","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[3,2,1],"latestChangedDtsFile":"./src/a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../../beta/b.ts","../src/a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3360792065-export { }","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5654511483-import * as b from '../../beta/b'","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[3,2,1],"latestChangedDtsFile":"./src/a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/alpha/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -79,27 +79,33 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../beta/b.ts": {
         "original": {
           "version": "-3360792065-export { }",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-3360792065-export { }",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/a.ts": {
         "original": {
           "version": "-5654511483-import * as b from '../../beta/b'",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-5654511483-import * as b from '../../beta/b'",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -125,7 +131,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./src/a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 947
+  "size": 1001
 }
 
 //// [/beta/b.d.ts]
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js
index 09a7a6f74e14f..b13013c79d561 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-declaration-=-false.js
@@ -53,7 +53,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/primary/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"declaration":false,"outDir":"./"},"referencedMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":false,"outDir":"./"},"referencedMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -66,19 +66,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a.ts": {
         "original": {
           "version": "-3531955686-export { };",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-3531955686-export { };",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -96,6 +100,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 781
+  "size": 817
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js
index fe0de70d6188b..7577968408c28 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-file-list-is-not-exhaustive.js
@@ -67,7 +67,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/primary/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-2704852577-export {}","signature":"-3531856636-export {};\n"},{"version":"-4190788607-import * as b from './b'","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-2704852577-export {}","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-4190788607-import * as b from './b'","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -86,27 +86,33 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b.ts": {
         "original": {
           "version": "-2704852577-export {}",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2704852577-export {}",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../a.ts": {
         "original": {
           "version": "-4190788607-import * as b from './b'",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-4190788607-import * as b from './b'",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,6 +138,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 921
+  "size": 975
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js
index 3e10c473a1d69..7da00e30a73a5 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-exist.js
@@ -60,7 +60,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/primary/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3531955686-export { };","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/primary/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -73,19 +73,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a.ts": {
         "original": {
           "version": "-3531955686-export { };",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-3531955686-export { };",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,6 +106,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 761
+  "size": 797
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js
index 90d1d6b5069ec..096a13edb1f85 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/errors-when-the-referenced-project-doesnt-have-composite.js
@@ -75,7 +75,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/reference/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-9543969340-import * as mod_0 from \"../primary/a\"","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9543969340-import * as mod_0 from \"../primary/a\"","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/reference/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -88,19 +88,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b.ts": {
         "original": {
           "version": "-9543969340-import * as mod_0 from \"../primary/a\"",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-9543969340-import * as mod_0 from \"../primary/a\"",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -117,6 +121,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 789
+  "size": 825
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js
index 10c637abe70eb..42f742b31c12b 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing-when-module-reference-is-not-relative.js
@@ -74,7 +74,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/beta/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"2892088637-import { m } from '@alpha/a'","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[[2,[{"file":"../b.ts","start":18,"length":10,"messageText":"Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.","category":1,"code":6305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"2892088637-import { m } from '@alpha/a'","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[[2,[{"file":"../b.ts","start":18,"length":10,"messageText":"Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.","category":1,"code":6305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/beta/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -87,19 +87,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b.ts": {
         "original": {
           "version": "2892088637-import { m } from '@alpha/a'",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "2892088637-import { m } from '@alpha/a'",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,6 +136,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 982
+  "size": 1018
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js
index 44c29b38c9afc..38290d5def018 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/issues-a-nice-error-when-the-input-file-is-missing.js
@@ -68,7 +68,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/beta/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-4853599800-import { m } from '../alpha/a'","signature":"-3531856636-export {};\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[[2,[{"file":"../b.ts","start":18,"length":12,"messageText":"Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.","category":1,"code":6305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4853599800-import { m } from '../alpha/a'","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[[2,[{"file":"../b.ts","start":18,"length":12,"messageText":"Output file '/alpha/bin/a.d.ts' has not been built from source file '/alpha/a.ts'.","category":1,"code":6305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/beta/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -81,19 +81,23 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b.ts": {
         "original": {
           "version": "-4853599800-import { m } from '../alpha/a'",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-4853599800-import { m } from '../alpha/a'",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -126,6 +130,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 985
+  "size": 1021
 }
 
diff --git a/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js b/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js
index 38be957715b95..b8b58913bf390 100644
--- a/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js
+++ b/tests/baselines/reference/tsc/projectReferencesConfig/redirects-to-the-output-dts-file.js
@@ -78,7 +78,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 //// [/beta/bin/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","../../alpha/bin/a.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-3531955686-export { };",{"version":"-4853599800-import { m } from '../alpha/a'","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[2,[3,[{"file":"../b.ts","start":9,"length":1,"messageText":"Module '\"../alpha/a\"' has no exported member 'm'.","category":1,"code":2305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","../../alpha/bin/a.d.ts","../b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3531955686-export { };","impliedFormat":1},{"version":"-4853599800-import { m } from '../alpha/a'","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[2,[3,[{"file":"../b.ts","start":9,"length":1,"messageText":"Module '\"../alpha/a\"' has no exported member 'm'.","category":1,"code":2305}]],1],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/beta/bin/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -97,23 +97,32 @@ Object.defineProperty(exports, "__esModule", { value: true });
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../alpha/bin/a.d.ts": {
+        "original": {
+          "version": "-3531955686-export { };",
+          "impliedFormat": 1
+        },
         "version": "-3531955686-export { };",
-        "signature": "-3531955686-export { };"
+        "signature": "-3531955686-export { };",
+        "impliedFormat": "commonjs"
       },
       "../b.ts": {
         "original": {
           "version": "-4853599800-import { m } from '../alpha/a'",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-4853599800-import { m } from '../alpha/a'",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -151,6 +160,6 @@ Object.defineProperty(exports, "__esModule", { value: true });
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1030
+  "size": 1096
 }
 
diff --git a/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash-under---strict.js b/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash-under---strict.js
index 3999d3e087d59..6350e86fe6c8f 100644
--- a/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash-under---strict.js
+++ b/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash-under---strict.js
@@ -70,7 +70,7 @@ exports.App = App;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/index.tsx","./node_modules/@types/react/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-14760199789-export const App = () => <div propA={true}></div>;",{"version":"-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}","affectsGlobalScope":true}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,[2,[{"file":"./src/index.tsx","start":25,"length":24,"code":7016,"category":1,"messageText":"Could not find a declaration file for module 'react/jsx-runtime'. '/src/project/node_modules/react/jsx-runtime.js' implicitly has an 'any' type."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/index.tsx","./node_modules/@types/react/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1},{"version":"-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1,"strict":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,[2,[{"file":"./src/index.tsx","start":25,"length":24,"code":7016,"category":1,"messageText":"Could not find a declaration file for module 'react/jsx-runtime'. '/src/project/node_modules/react/jsx-runtime.js' implicitly has an 'any' type."}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -84,24 +84,33 @@ exports.App = App;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       },
       "./node_modules/@types/react/index.d.ts": {
         "original": {
           "version": "-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}",
         "signature": "-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,6 +145,6 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1335
+  "size": 1401
 }
 
diff --git a/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash.js b/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash.js
index f91a1e858bc3a..2e58fed80ab55 100644
--- a/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash.js
+++ b/tests/baselines/reference/tsc/react-jsx-emit-mode/with-no-backing-types-found-doesn't-crash.js
@@ -62,7 +62,7 @@ exports.App = App;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.d.ts","./src/index.tsx","./node_modules/@types/react/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-14760199789-export const App = () => <div propA={true}></div>;",{"version":"-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}","affectsGlobalScope":true}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.d.ts","./src/index.tsx","./node_modules/@types/react/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1},{"version":"-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -76,24 +76,33 @@ exports.App = App;
       "../../lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       },
       "./node_modules/@types/react/index.d.ts": {
         "original": {
           "version": "-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}",
         "signature": "-16587767667-\nexport {};\ndeclare global {\n    namespace JSX {\n        interface Element {}\n        interface IntrinsicElements {\n            div: {\n                propA?: boolean;\n            };\n        }\n    }\n}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -115,6 +124,6 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1081
+  "size": 1147
 }
 
diff --git a/tests/baselines/reference/tscWatch/emit/emit-file-content/elides-const-enums-correctly-in-incremental-compilation.js b/tests/baselines/reference/tscWatch/emit/emit-file-content/elides-const-enums-correctly-in-incremental-compilation.js
index ae891b3832ef6..c8ec2a09ee369 100644
--- a/tests/baselines/reference/tscWatch/emit/emit-file-content/elides-const-enums-correctly-in-incremental-compilation.js
+++ b/tests/baselines/reference/tscWatch/emit/emit-file-content/elides-const-enums-correctly-in-incremental-compilation.js
@@ -49,6 +49,12 @@ var v = 1 /* E2.V */;
 
 
 
+PolledWatches::
+/user/someone/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/someone/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
index ccdd03f6e91f5..bc1561cec4fb7 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
@@ -54,7 +54,7 @@ console.log(b.c.d);
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ console.log(b.c.d);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -128,15 +145,19 @@ console.log(b.c.d);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 919
+  "size": 1027
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -219,7 +240,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -242,23 +263,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -293,7 +331,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 920
+  "size": 1028
 }
 
 
@@ -352,7 +390,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -375,23 +413,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -426,7 +481,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 919
+  "size": 1027
 }
 
 
@@ -485,7 +540,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -508,23 +563,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -559,7 +631,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 920
+  "size": 1028
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change.js
index 21a2de2ddaa7c..88790c8c01fd7 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.d.ts-change.js
@@ -57,8 +57,12 @@ console.log(b.c.d);
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change-with-incremental.js
index 11eb203c6b327..7270e071ae324 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change-with-incremental.js
@@ -81,7 +81,7 @@ console.log(b.c.d);
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-22447130237-export class C\n{\n    d = 1;\n}","-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,23 +104,40 @@ console.log(b.c.d);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-22447130237-export class C\n{\n    d = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-22447130237-export class C\n{\n    d = 1;\n}"
+        "signature": "-22447130237-export class C\n{\n    d = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+          "impliedFormat": 1
+        },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}"
+        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -155,15 +172,19 @@ console.log(b.c.d);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 918
+  "size": 1026
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -259,7 +280,7 @@ exports.C = C;
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -282,35 +303,43 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -357,7 +386,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1285
+  "size": 1357
 }
 
 
@@ -437,7 +466,7 @@ exports.C = C;
 
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -460,35 +489,43 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -535,7 +572,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1283
+  "size": 1355
 }
 
 
@@ -613,7 +650,7 @@ exports.C = C;
 
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -636,35 +673,43 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -711,7 +756,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1285
+  "size": 1357
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change.js
index 4c5699dfb6292..ad957561c57db 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/deepImportChanges/errors-for-.ts-change.js
@@ -84,8 +84,12 @@ console.log(b.c.d);
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
index 5ac1ab9c346ea..89b38102ae199 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
@@ -115,7 +115,7 @@ require("./d");
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -146,31 +146,58 @@ require("./d");
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}"
+        "signature": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+          "impliedFormat": 1
+        },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}"
+        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -249,15 +276,19 @@ require("./d");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1772
+  "size": 1940
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -354,7 +385,7 @@ Output::
 //// [/user/username/projects/myproject/d.js] file written with same contents
 //// [/user/username/projects/myproject/e.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -385,51 +416,63 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -474,7 +517,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1791
+  "size": 1899
 }
 
 
@@ -549,7 +592,7 @@ Output::
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -580,51 +623,63 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -669,7 +724,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1794
+  "size": 1902
 }
 
 
@@ -738,7 +793,7 @@ Output::
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -769,51 +824,63 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -858,7 +925,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1791
+  "size": 1899
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes.js
index c10956d12ef74..9ad78d66e7034 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/file-not-exporting-a-deep-multilevel-import-that-changes.js
@@ -118,8 +118,12 @@ require("./d");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export-with-incremental.js
index 35665081389b9..b46c48d909f71 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export-with-incremental.js
@@ -164,7 +164,7 @@ exports.App = App;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-4369626085-export interface ITest {\n    title: string;\n}","-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -199,35 +199,67 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
+        "original": {
+          "version": "-4369626085-export interface ITest {\n    title: string;\n}",
+          "impliedFormat": 1
+        },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-4369626085-export interface ITest {\n    title: string;\n}"
+        "signature": "-4369626085-export interface ITest {\n    title: string;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -267,15 +299,25 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1364
+  "size": 1562
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -371,7 +413,7 @@ Output::
 //// [/user/username/projects/myproject/lib2/public.js] file written with same contents
 //// [/user/username/projects/myproject/app.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -406,59 +448,73 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -510,7 +566,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2114
+  "size": 2240
 }
 
 
@@ -585,7 +641,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -620,59 +676,73 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -724,7 +794,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2112
+  "size": 2238
 }
 
 
@@ -791,7 +861,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -826,59 +896,73 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -930,7 +1014,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2114
+  "size": 2240
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export.js
index fc2f6a40acbb5..2dfab87e2d107 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/no-circular-import/export.js
@@ -165,10 +165,20 @@ exports.App = App;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports-with-incremental.js
index 25df3a01aed8a..e90b95724bf85 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports-with-incremental.js
@@ -182,7 +182,7 @@ exports.App = App;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-4369626085-export interface ITest {\n    title: string;\n}","-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,39 +219,76 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
+        "original": {
+          "version": "-4369626085-export interface ITest {\n    title: string;\n}",
+          "impliedFormat": 1
+        },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-4369626085-export interface ITest {\n    title: string;\n}"
+        "signature": "-4369626085-export interface ITest {\n    title: string;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -296,15 +333,25 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1543
+  "size": 1771
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -406,7 +453,7 @@ Output::
 //// [/user/username/projects/myproject/lib2/public.js] file written with same contents
 //// [/user/username/projects/myproject/app.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -443,67 +490,83 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -560,7 +623,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2471
+  "size": 2615
 }
 
 
@@ -638,7 +701,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -675,67 +738,83 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -792,7 +871,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2469
+  "size": 2613
 }
 
 
@@ -860,7 +939,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -897,67 +976,83 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1014,7 +1109,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2471
+  "size": 2615
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports.js
index 1fed486c3144f..537cb7e78e848 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/transitive-exports/yes-circular-import/exports.js
@@ -183,10 +183,20 @@ exports.App = App;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError-with-incremental.js
index 032a1050400b9..1290ded5a106e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError-with-incremental.js
@@ -57,7 +57,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,15 +158,25 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1069
+  "size": 1177
 }
 
 
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -243,7 +270,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -263,27 +290,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -317,7 +358,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1084
+  "size": 1180
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -398,7 +439,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -418,27 +459,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -490,7 +545,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1243
+  "size": 1339
 }
 
 
@@ -563,7 +618,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -583,27 +638,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -637,7 +706,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1075
+  "size": 1171
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError.js
index 1bc197a356d78..0dcafca02ca24 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependencies/with-noEmitOnError.js
@@ -60,8 +60,18 @@ Output::
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
index 4b20c643c489c..13e5ce3d122c3 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
@@ -58,7 +58,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -81,27 +81,41 @@ export {};
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,15 +151,19 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 989
+  "size": 1085
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -229,7 +247,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -252,27 +270,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -308,7 +340,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 990
+  "size": 1086
 }
 
 
@@ -368,7 +400,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -391,27 +423,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -447,7 +493,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 989
+  "size": 1085
 }
 
 
@@ -507,7 +553,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -530,27 +576,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -586,7 +646,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 990
+  "size": 1086
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change.js
index 330192bc6b394..e9e8b90272818 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.d.ts-change.js
@@ -61,8 +61,12 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
index 08a7c19671334..c2f83e9e81966 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
@@ -98,7 +98,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -121,35 +121,43 @@ export {};
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -185,15 +193,19 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1176
+  "size": 1248
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -291,7 +303,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -314,35 +326,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -378,7 +398,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1178
+  "size": 1250
 }
 
 
@@ -459,7 +479,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -482,35 +502,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -546,7 +574,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1176
+  "size": 1248
 }
 
 
@@ -627,7 +655,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -650,35 +678,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -714,7 +750,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1178
+  "size": 1250
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change.js
index 3c4c8b4efb9ff..c13e777c6db9c 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/deepImportChanges/errors-for-.ts-change.js
@@ -101,8 +101,12 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
index 3a775e2a276ad..0d76305bfc127 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
@@ -145,7 +145,7 @@ import "./d";
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,51 +176,63 @@ import "./d";
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -300,15 +312,19 @@ import "./d";
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2313
+  "size": 2421
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -430,7 +446,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -461,51 +477,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -585,7 +613,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2310
+  "size": 2418
 }
 
 
@@ -682,7 +710,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -713,51 +741,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -837,7 +877,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2313
+  "size": 2421
 }
 
 
@@ -934,7 +974,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -965,51 +1005,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1089,7 +1141,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2310
+  "size": 2418
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
index f46225b4db8c1..88ce950143473 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
@@ -148,8 +148,12 @@ import "./d";
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export-with-incremental.js
index b7719226099f9..9826d7ff60cab 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export-with-incremental.js
@@ -195,7 +195,7 @@ export declare class App {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -230,59 +230,73 @@ export declare class App {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -323,15 +337,25 @@ export declare class App {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1911
+  "size": 2037
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -426,7 +450,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -461,59 +485,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -554,7 +592,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1913
+  "size": 2039
 }
 
 
@@ -624,7 +662,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -659,59 +697,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -752,7 +804,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1911
+  "size": 2037
 }
 
 
@@ -822,7 +874,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -857,59 +909,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -950,7 +1016,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1913
+  "size": 2039
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export.js
index 2bde842446ed9..440a2c8f1df48 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/no-circular-import/export.js
@@ -196,10 +196,20 @@ export declare class App {
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
index 7952d7fbdfc1f..879996d6a0446 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
@@ -222,7 +222,7 @@ export declare class App {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,67 +259,83 @@ export declare class App {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -365,15 +381,25 @@ export declare class App {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2268
+  "size": 2412
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -473,7 +499,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -510,67 +536,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -616,7 +658,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2270
+  "size": 2414
 }
 
 
@@ -687,7 +729,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -724,67 +766,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -830,7 +888,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2268
+  "size": 2412
 }
 
 
@@ -901,7 +959,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -938,67 +996,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1044,7 +1118,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2270
+  "size": 2414
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports.js
index 8936f7c453f3a..e6c0e67e2f5f5 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/transitive-exports/yes-circular-import/exports.js
@@ -223,10 +223,20 @@ export declare class App {
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError-with-incremental.js
index ff0c308eb0be1..1d3e567ff8fdc 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError-with-incremental.js
@@ -57,7 +57,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -142,15 +159,25 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1088
+  "size": 1196
 }
 
 
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -245,7 +272,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -265,31 +292,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -324,7 +362,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1154
+  "size": 1238
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -420,7 +458,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -440,31 +478,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -517,7 +566,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1313
+  "size": 1397
 }
 
 
@@ -591,7 +640,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"assumeChangesOnlyAffectDirectDependencies":true,"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -611,31 +660,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -670,7 +730,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1145
+  "size": 1229
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError.js
index d02470d9cf80e..9e6754cbb3fec 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/assumeChangesOnlyAffectDirectDependenciesAndD/with-noEmitOnError.js
@@ -60,8 +60,18 @@ Output::
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
index 4cdc1c8b27ea2..0c21536eae495 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
@@ -54,7 +54,7 @@ console.log(b.c.d);
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ console.log(b.c.d);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -125,15 +142,19 @@ console.log(b.c.d);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 858
+  "size": 966
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -220,7 +241,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -243,23 +264,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -303,7 +341,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 985
+  "size": 1093
 }
 
 
@@ -363,7 +401,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -386,23 +424,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -434,7 +489,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 858
+  "size": 966
 }
 
 
@@ -499,7 +554,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -522,23 +577,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -582,7 +654,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 985
+  "size": 1093
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change.js
index 0ff86342680ec..67d1e28eba60b 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.d.ts-change.js
@@ -57,8 +57,12 @@ console.log(b.c.d);
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change-with-incremental.js
index 5891ee58865c2..e4101819fa1c8 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change-with-incremental.js
@@ -81,7 +81,7 @@ console.log(b.c.d);
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-22447130237-export class C\n{\n    d = 1;\n}","-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,23 +104,40 @@ console.log(b.c.d);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-22447130237-export class C\n{\n    d = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-22447130237-export class C\n{\n    d = 1;\n}"
+        "signature": "-22447130237-export class C\n{\n    d = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+          "impliedFormat": 1
+        },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}"
+        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -152,15 +169,19 @@ console.log(b.c.d);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 857
+  "size": 965
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -255,7 +276,7 @@ exports.C = C;
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -278,35 +299,43 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -350,7 +379,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1224
+  "size": 1296
 }
 
 
@@ -424,7 +453,7 @@ exports.C = C;
 
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -447,31 +476,42 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -503,7 +543,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1045
+  "size": 1129
 }
 
 
@@ -582,7 +622,7 @@ exports.C = C;
 
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -605,31 +645,42 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -673,7 +724,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1173
+  "size": 1257
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change.js
index 320820c4568ee..921a9fd268fd8 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/deepImportChanges/errors-for-.ts-change.js
@@ -84,8 +84,12 @@ console.log(b.c.d);
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
index c5c7c81f4f436..a84f0e5661cf5 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
@@ -115,7 +115,7 @@ require("./d");
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -146,31 +146,58 @@ require("./d");
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}"
+        "signature": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+          "impliedFormat": 1
+        },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}"
+        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -246,15 +273,19 @@ require("./d");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1711
+  "size": 1879
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -350,7 +381,7 @@ Output::
 //// [/user/username/projects/myproject/d.js] file written with same contents
 //// [/user/username/projects/myproject/e.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -381,51 +412,63 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -467,7 +510,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1730
+  "size": 1838
 }
 
 
@@ -556,7 +599,7 @@ Output::
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -587,39 +630,60 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -695,7 +759,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1997
+  "size": 2141
 }
 
 
@@ -769,7 +833,7 @@ Output::
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/b.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -800,39 +864,60 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -874,7 +959,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1494
+  "size": 1638
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes.js
index cbd9cb5bc1143..e99cb963e1a2e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/file-not-exporting-a-deep-multilevel-import-that-changes.js
@@ -118,8 +118,12 @@ require("./d");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export-with-incremental.js
index ad26034a741a6..2d3c97283ab90 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export-with-incremental.js
@@ -164,7 +164,7 @@ exports.App = App;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-4369626085-export interface ITest {\n    title: string;\n}","-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -199,35 +199,67 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
+        "original": {
+          "version": "-4369626085-export interface ITest {\n    title: string;\n}",
+          "impliedFormat": 1
+        },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-4369626085-export interface ITest {\n    title: string;\n}"
+        "signature": "-4369626085-export interface ITest {\n    title: string;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -264,15 +296,25 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1303
+  "size": 1501
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -367,7 +409,7 @@ Output::
 //// [/user/username/projects/myproject/lib2/public.js] file written with same contents
 //// [/user/username/projects/myproject/app.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -402,59 +444,73 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -503,7 +559,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2053
+  "size": 2179
 }
 
 
@@ -572,7 +628,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},"-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -607,43 +663,69 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -680,7 +762,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1468
+  "size": 1642
 }
 
 
@@ -754,7 +836,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},"-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -789,43 +871,69 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -874,7 +982,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1690
+  "size": 1864
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export.js
index fea110c684ae3..e571521fcae42 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/no-circular-import/export.js
@@ -165,10 +165,20 @@ exports.App = App;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports-with-incremental.js
index 8d0f4b10de8df..ecdde8ea5b6fa 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports-with-incremental.js
@@ -182,7 +182,7 @@ exports.App = App;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-4369626085-export interface ITest {\n    title: string;\n}","-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,39 +219,76 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
+        "original": {
+          "version": "-4369626085-export interface ITest {\n    title: string;\n}",
+          "impliedFormat": 1
+        },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-4369626085-export interface ITest {\n    title: string;\n}"
+        "signature": "-4369626085-export interface ITest {\n    title: string;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -293,15 +330,25 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1482
+  "size": 1710
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -402,7 +449,7 @@ Output::
 //// [/user/username/projects/myproject/lib2/public.js] file written with same contents
 //// [/user/username/projects/myproject/app.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -439,67 +486,83 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -553,7 +616,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2410
+  "size": 2554
 }
 
 
@@ -625,7 +688,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},"-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -662,47 +725,78 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -744,7 +838,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1647
+  "size": 1851
 }
 
 
@@ -821,7 +915,7 @@ Output::
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/lib1/tools/public.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},"-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -858,47 +952,78 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -952,7 +1077,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1869
+  "size": 2073
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports.js
index 466a119ae4886..4e877e72deb91 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/transitive-exports/yes-circular-import/exports.js
@@ -183,10 +183,20 @@ exports.App = App;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError-with-incremental.js
index 13142921b2c05..385487fa817d3 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError-with-incremental.js
@@ -57,7 +57,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,15 +157,25 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1020
+  "size": 1128
 }
 
 
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -241,7 +268,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -261,27 +288,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -314,7 +355,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1035
+  "size": 1131
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -394,7 +435,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -414,27 +455,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -485,7 +540,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1194
+  "size": 1290
 }
 
 
@@ -557,7 +612,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -577,27 +632,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -630,7 +699,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1026
+  "size": 1122
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError.js
index 7dd3ca62d09fd..21db97d9fcb08 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/default/with-noEmitOnError.js
@@ -60,8 +60,18 @@ Output::
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
index f37080c4b3bba..73b21a1e9d721 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
@@ -58,7 +58,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -81,27 +81,41 @@ export {};
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,15 +150,19 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1036
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -233,7 +251,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -256,27 +274,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -323,7 +355,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1067
+  "size": 1163
 }
 
 
@@ -385,7 +417,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -408,27 +440,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -463,7 +509,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1036
 }
 
 
@@ -530,7 +576,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -553,27 +599,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -620,7 +680,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1067
+  "size": 1163
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change.js
index 27c5362a45531..a98cd9d582306 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.d.ts-change.js
@@ -61,8 +61,12 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
index faf13dd911424..40842cba8a80f 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
@@ -98,7 +98,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -121,35 +121,43 @@ export {};
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -184,15 +192,19 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1127
+  "size": 1199
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -295,7 +307,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -318,35 +330,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -393,7 +413,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1255
+  "size": 1327
 }
 
 
@@ -476,7 +496,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -499,35 +519,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -562,7 +590,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1127
+  "size": 1199
 }
 
 
@@ -650,7 +678,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -673,35 +701,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -748,7 +784,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1255
+  "size": 1327
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change.js
index dbe30a4763b4e..7243432fac0ea 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/deepImportChanges/errors-for-.ts-change.js
@@ -101,8 +101,12 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
index 2d5a28a913bd8..108a9846b01ef 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
@@ -145,7 +145,7 @@ import "./d";
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,51 +176,63 @@ import "./d";
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -299,15 +311,19 @@ import "./d";
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2264
+  "size": 2372
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -416,7 +432,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/d.d.ts] file written with same contents
 //// [/user/username/projects/myproject/e.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -447,51 +463,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -536,7 +564,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1761
+  "size": 1869
 }
 
 
@@ -641,7 +669,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/d.d.ts] file written with same contents
 //// [/user/username/projects/myproject/e.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -672,51 +700,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -795,7 +835,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2264
+  "size": 2372
 }
 
 
@@ -885,7 +925,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/d.d.ts] file written with same contents
 //// [/user/username/projects/myproject/e.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -916,51 +956,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1005,7 +1057,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1761
+  "size": 1869
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
index 010fbccec0470..8aea00f1ee33f 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
@@ -148,8 +148,12 @@ import "./d";
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export-with-incremental.js
index 633987ec9e350..e3a83308f9ff2 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export-with-incremental.js
@@ -195,7 +195,7 @@ export declare class App {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -230,59 +230,73 @@ export declare class App {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -322,15 +336,25 @@ export declare class App {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1862
+  "size": 1988
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -433,7 +457,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -468,59 +492,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -572,7 +610,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2084
+  "size": 2210
 }
 
 
@@ -653,7 +691,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -688,59 +726,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -780,7 +832,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1862
+  "size": 1988
 }
 
 
@@ -866,7 +918,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -901,59 +953,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1005,7 +1071,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2084
+  "size": 2210
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export.js
index d4a641db39b8a..e50771f2ed79e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/no-circular-import/export.js
@@ -196,10 +196,20 @@ export declare class App {
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
index 91bbdabddd0f1..5db73db2a5063 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
@@ -222,7 +222,7 @@ export declare class App {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,67 +259,83 @@ export declare class App {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -364,15 +380,25 @@ export declare class App {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2219
+  "size": 2363
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -481,7 +507,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -518,67 +544,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -635,7 +677,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2441
+  "size": 2585
 }
 
 
@@ -720,7 +762,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -757,67 +799,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -862,7 +920,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2219
+  "size": 2363
 }
 
 
@@ -952,7 +1010,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -989,67 +1047,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1106,7 +1180,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2441
+  "size": 2585
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports.js
index 7444316e45ce3..0c85833c2f406 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/transitive-exports/yes-circular-import/exports.js
@@ -223,10 +223,20 @@ export declare class App {
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError-with-incremental.js
index 2abe3c7974d3e..2528e19a14816 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError-with-incremental.js
@@ -57,7 +57,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,15 +158,25 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1039
+  "size": 1147
 }
 
 
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -243,7 +270,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -263,31 +290,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -321,7 +359,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1189
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -416,7 +454,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -436,31 +474,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -512,7 +561,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1264
+  "size": 1348
 }
 
 
@@ -585,7 +634,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -605,31 +654,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -663,7 +723,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1096
+  "size": 1180
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError.js
index 38248a4adadbb..4249215fb7149 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/defaultAndD/with-noEmitOnError.js
@@ -60,8 +60,18 @@ Output::
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
index 54d8addb83b2b..3b9f267be7d38 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
@@ -54,7 +54,7 @@ console.log(b.c.d);
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ console.log(b.c.d);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -125,15 +142,19 @@ console.log(b.c.d);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 858
+  "size": 966
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -221,7 +242,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -244,23 +265,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -304,7 +342,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 985
+  "size": 1093
 }
 
 
@@ -365,7 +403,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -388,23 +426,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -436,7 +491,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 858
+  "size": 966
 }
 
 
@@ -502,7 +557,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -525,23 +580,40 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -585,7 +657,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 985
+  "size": 1093
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change.js
index 2ac00110b33b9..5c7b52beba7b2 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.d.ts-change.js
@@ -57,8 +57,12 @@ console.log(b.c.d);
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change-with-incremental.js
index 6e805a9502722..1ce170a7e120e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change-with-incremental.js
@@ -81,7 +81,7 @@ console.log(b.c.d);
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-22447130237-export class C\n{\n    d = 1;\n}","-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,23 +104,40 @@ console.log(b.c.d);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-22447130237-export class C\n{\n    d = 1;\n}",
+          "impliedFormat": 1
+        },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-22447130237-export class C\n{\n    d = 1;\n}"
+        "signature": "-22447130237-export class C\n{\n    d = 1;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+          "impliedFormat": 1
+        },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}"
+        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -152,15 +169,19 @@ console.log(b.c.d);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 857
+  "size": 965
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -254,7 +275,7 @@ exports.C = C;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -277,27 +298,41 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+          "impliedFormat": 1
+        },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}"
+        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -341,7 +376,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1069
+  "size": 1165
 }
 
 
@@ -415,7 +450,7 @@ exports.C = C;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -438,27 +473,41 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+          "impliedFormat": 1
+        },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}"
+        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -490,7 +539,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 941
+  "size": 1037
 }
 
 
@@ -569,7 +618,7 @@ exports.C = C;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","impliedFormat":1}],"root":[[2,4]],"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -592,27 +641,41 @@ exports.C = C;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+          "impliedFormat": 1
+        },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}"
+        "signature": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+          "impliedFormat": 1
+        },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);"
+        "signature": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -656,7 +719,7 @@ exports.C = C;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1069
+  "size": 1165
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change.js
index 0ce1b6a2b6887..6a482997e6aeb 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/deepImportChanges/errors-for-.ts-change.js
@@ -84,8 +84,12 @@ console.log(b.c.d);
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
index 1b2e699ae273a..3d53264ad80b6 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
@@ -115,7 +115,7 @@ require("./d");
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -146,31 +146,58 @@ require("./d");
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}"
+        "signature": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+          "impliedFormat": 1
+        },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}"
+        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -246,15 +273,19 @@ require("./d");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1711
+  "size": 1879
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -347,7 +378,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -378,35 +409,59 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+          "impliedFormat": 1
+        },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}"
+        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -448,7 +503,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1373
+  "size": 1529
 }
 
 
@@ -537,7 +592,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -568,35 +623,59 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+          "impliedFormat": 1
+        },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}"
+        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -672,7 +751,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1876
+  "size": 2032
 }
 
 
@@ -746,7 +825,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","-5185546240-import \"./d\";"],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","impliedFormat":1},{"version":"-5185546240-import \"./d\";","impliedFormat":1}],"root":[[2,6]],"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -777,35 +856,59 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+          "impliedFormat": 1
+        },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}"
+        "signature": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+          "impliedFormat": 1
+        },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};"
+        "signature": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
+        "original": {
+          "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+          "impliedFormat": 1
+        },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;"
+        "signature": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
+        "original": {
+          "version": "-5185546240-import \"./d\";",
+          "impliedFormat": 1
+        },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-5185546240-import \"./d\";"
+        "signature": "-5185546240-import \"./d\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -847,7 +950,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1373
+  "size": 1529
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes.js
index ecfe8b11abc77..f39fe8fdddcc1 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/file-not-exporting-a-deep-multilevel-import-that-changes.js
@@ -118,8 +118,12 @@ require("./d");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export-with-incremental.js
index 62eb7081ad60a..b6791f92ab535 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export-with-incremental.js
@@ -164,7 +164,7 @@ exports.App = App;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-4369626085-export interface ITest {\n    title: string;\n}","-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -199,35 +199,67 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
+        "original": {
+          "version": "-4369626085-export interface ITest {\n    title: string;\n}",
+          "impliedFormat": 1
+        },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-4369626085-export interface ITest {\n    title: string;\n}"
+        "signature": "-4369626085-export interface ITest {\n    title: string;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -264,15 +296,25 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1303
+  "size": 1501
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -363,7 +405,7 @@ Output::
 
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},"-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -398,39 +440,68 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -479,7 +550,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1613
+  "size": 1799
 }
 
 
@@ -548,7 +619,7 @@ Output::
 
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},"-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -583,39 +654,68 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -652,7 +752,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1391
+  "size": 1577
 }
 
 
@@ -726,7 +826,7 @@ Output::
 
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},"-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[7],"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -761,39 +861,68 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -842,7 +971,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1613
+  "size": 1799
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export.js
index 7fee19ead77d9..036c53ecb0e1f 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/no-circular-import/export.js
@@ -165,10 +165,20 @@ exports.App = App;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports-with-incremental.js
index 6602e740f7a7c..fc05e779cd5ff 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports-with-incremental.js
@@ -182,7 +182,7 @@ exports.App = App;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-4369626085-export interface ITest {\n    title: string;\n}","-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -219,39 +219,76 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
+        "original": {
+          "version": "-4369626085-export interface ITest {\n    title: string;\n}",
+          "impliedFormat": 1
+        },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-4369626085-export interface ITest {\n    title: string;\n}"
+        "signature": "-4369626085-export interface ITest {\n    title: string;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -293,15 +330,25 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1482
+  "size": 1710
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -397,7 +444,7 @@ Output::
 
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},"-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -434,43 +481,77 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -524,7 +605,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1792
+  "size": 2008
 }
 
 
@@ -596,7 +677,7 @@ Output::
 
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},"-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -633,43 +714,77 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -711,7 +826,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1570
+  "size": 1786
 }
 
 
@@ -788,7 +903,7 @@ Output::
 
 //// [/user/username/projects/myproject/lib1/tools/toolsinterface.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},"-10750058173-export * from \"./toolsinterface\";","-5078933600-export * from \"./tools/public\";","-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","-9530042629-export * from \"./data\";","-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","impliedFormat":1}],"root":[8],"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -825,43 +940,77 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
+        "original": {
+          "version": "-10750058173-export * from \"./toolsinterface\";",
+          "impliedFormat": 1
+        },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-10750058173-export * from \"./toolsinterface\";"
+        "signature": "-10750058173-export * from \"./toolsinterface\";",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
+        "original": {
+          "version": "-5078933600-export * from \"./tools/public\";",
+          "impliedFormat": 1
+        },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-5078933600-export * from \"./tools/public\";"
+        "signature": "-5078933600-export * from \"./tools/public\";",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
+        "original": {
+          "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+          "impliedFormat": 1
+        },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}"
+        "signature": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
+        "original": {
+          "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}"
+        "signature": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
+        "original": {
+          "version": "-9530042629-export * from \"./data\";",
+          "impliedFormat": 1
+        },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9530042629-export * from \"./data\";"
+        "signature": "-9530042629-export * from \"./data\";",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
+        "original": {
+          "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+          "impliedFormat": 1
+        },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}"
+        "signature": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -915,7 +1064,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1792
+  "size": 2008
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports.js
index fb8c1424bf865..1f2aec2622d86 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/transitive-exports/yes-circular-import/exports.js
@@ -183,10 +183,20 @@ exports.App = App;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError-with-incremental.js
index f53439aaf18d7..6ca2dadbac5af 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError-with-incremental.js
@@ -57,7 +57,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,15 +157,25 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1020
+  "size": 1128
 }
 
 
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -242,7 +269,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -262,27 +289,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -315,7 +356,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1035
+  "size": 1131
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -396,7 +437,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -416,27 +457,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -487,7 +542,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1194
+  "size": 1290
 }
 
 
@@ -560,7 +615,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},"9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -580,27 +635,41 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -633,7 +702,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1026
+  "size": 1122
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError.js
index 96d597e98cefd..c43c10d965cb2 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModules/with-noEmitOnError.js
@@ -60,8 +60,18 @@ Output::
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
index f895afac948d0..e89addc13bbdb 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change-with-incremental.js
@@ -58,7 +58,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -81,27 +81,41 @@ export {};
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,15 +150,19 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1036
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -234,7 +252,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -257,27 +275,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -324,7 +356,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1067
+  "size": 1163
 }
 
 
@@ -387,7 +419,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18774426152-export class C\n{\n    d: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18774426152-export class C\n{\n    d: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -410,27 +442,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-18774426152-export class C\n{\n    d: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-18774426152-export class C\n{\n    d: number;\n}",
-        "signature": "-18774426152-export class C\n{\n    d: number;\n}"
+        "signature": "-18774426152-export class C\n{\n    d: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -465,7 +511,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 1036
 }
 
 
@@ -533,7 +579,7 @@ Output::
 
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-21444928214-export class C\n{\n    d2: number;\n}","-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.d.ts","./b.d.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-21444928214-export class C\n{\n    d2: number;\n}","impliedFormat":1},{"version":"-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -556,27 +602,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.d.ts": {
+        "original": {
+          "version": "-21444928214-export class C\n{\n    d2: number;\n}",
+          "impliedFormat": 1
+        },
         "version": "-21444928214-export class C\n{\n    d2: number;\n}",
-        "signature": "-21444928214-export class C\n{\n    d2: number;\n}"
+        "signature": "-21444928214-export class C\n{\n    d2: number;\n}",
+        "impliedFormat": "commonjs"
       },
       "./b.d.ts": {
+        "original": {
+          "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+          "impliedFormat": 1
+        },
         "version": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
-        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}"
+        "signature": "-1688906387-import {C} from './c';\nexport class B\n{\n    c: C;\n}",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -623,7 +683,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1067
+  "size": 1163
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change.js
index b882260ed8db0..30548ab63c76e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.d.ts-change.js
@@ -61,8 +61,12 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
index daeff627fe18d..edc4c8e226f2e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change-with-incremental.js
@@ -98,7 +98,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -121,35 +121,43 @@ export {};
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -184,15 +192,19 @@ export {};
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1127
+  "size": 1199
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -295,7 +307,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -318,35 +330,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -393,7 +413,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1255
+  "size": 1327
 }
 
 
@@ -476,7 +496,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22447130237-export class C\n{\n    d = 1;\n}","signature":"-6977846840-export declare class C {\n    d: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,4,3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -499,35 +519,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+          "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22447130237-export class C\n{\n    d = 1;\n}",
-        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n"
+        "signature": "-6977846840-export declare class C {\n    d: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -562,7 +590,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1127
+  "size": 1199
 }
 
 
@@ -650,7 +678,7 @@ export declare class C {
 //// [/user/username/projects/myproject/b.d.ts] file written with same contents
 //// [/user/username/projects/myproject/a.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n"},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-22846341163-export class C\n{\n    d2 = 1;\n}","signature":"-4637923302-export declare class C {\n    d2: number;\n}\n","impliedFormat":1},{"version":"-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}","signature":"-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n","impliedFormat":1},{"version":"4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true},"fileIdsList":[[3],[2]],"referencedMap":[[4,1],[3,2]],"semanticDiagnosticsPerFile":[1,[4,[{"file":"./a.ts","start":82,"length":1,"code":2339,"category":1,"messageText":"Property 'd' does not exist on type 'C'."}]],3,2]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -673,35 +701,43 @@ export declare class C {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+          "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-22846341163-export class C\n{\n    d2 = 1;\n}",
-        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n"
+        "signature": "-4637923302-export declare class C {\n    d2: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+          "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-6292386773-import {C} from './c';\nexport class B\n{\n    c = new C();\n}",
-        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n"
+        "signature": "-165097315-import { C } from './c';\nexport declare class B {\n    c: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "4878398349-import {B} from './b';\ndeclare var console: any;\nlet b = new B();\nconsole.log(b.c.d);",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -748,7 +784,7 @@ export declare class C {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1255
+  "size": 1327
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change.js
index 828c98308b676..ca593ba4a3cc9 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/deepImportChanges/errors-for-.ts-change.js
@@ -101,8 +101,12 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
index 890242442a766..00bf500f55bcc 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes-with-incremental.js
@@ -145,7 +145,7 @@ import "./d";
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,51 +176,63 @@ import "./d";
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -299,15 +311,19 @@ import "./d";
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2264
+  "size": 2372
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -416,7 +432,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/d.d.ts] file written with same contents
 //// [/user/username/projects/myproject/e.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -447,51 +463,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -536,7 +564,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1761
+  "size": 1869
 }
 
 
@@ -641,7 +669,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/d.d.ts] file written with same contents
 //// [/user/username/projects/myproject/e.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}","signature":"8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,[4,[{"file":"./c.ts","start":139,"length":1,"code":2353,"category":1,"messageText":"Object literal may only specify known properties, and 'x' does not exist in type 'Coords'.","relatedInformation":[{"file":"./a.ts","start":47,"length":1,"messageText":"The expected type comes from property 'c' which is declared here on type 'PointWrapper'","category":3,"code":6500}]}]],[5,[{"file":"./d.ts","start":45,"length":1,"code":2339,"category":1,"messageText":"Property 'x' does not exist on type 'Coords'."}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -672,51 +700,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+          "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "9889814467-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}",
-        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n"
+        "signature": "8536297517-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x2: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -795,7 +835,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2264
+  "size": 2372
 }
 
 
@@ -885,7 +925,7 @@ export interface Coords {
 //// [/user/username/projects/myproject/d.d.ts] file written with same contents
 //// [/user/username/projects/myproject/e.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n"},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n"}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts","./c.ts","./d.ts","./e.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}","signature":"696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n","impliedFormat":1},{"version":"-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}","signature":"-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n","impliedFormat":1},{"version":"-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};","signature":"-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n","impliedFormat":1},{"version":"-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-5185546240-import \"./d\";","signature":"-3619301366-import \"./d\";\n","impliedFormat":1}],"root":[[2,6]],"options":{"declaration":true},"fileIdsList":[[2],[3],[4],[5]],"referencedMap":[[3,1],[4,2],[5,3],[6,4]],"semanticDiagnosticsPerFile":[1,2,3,4,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -916,51 +956,63 @@ export interface Coords {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+          "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+          "impliedFormat": 1
         },
         "version": "2103509937-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}",
-        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n"
+        "signature": "696351195-export interface Point {\n    name: string;\n    c: Coords;\n}\nexport interface Coords {\n    x: number;\n    y: number;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+          "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-8029610078-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}",
-        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n"
+        "signature": "-7279094804-import { Point } from \"./a\";\nexport interface PointWrapper extends Point {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
         "original": {
           "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+          "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+          "impliedFormat": 1
         },
         "version": "-37232372138-import { PointWrapper } from \"./b\";\nexport function getPoint(): PointWrapper {\n    return {\n        name: \"test\",\n        c: {\n            x: 1,\n            y: 2\n        }\n    }\n};",
-        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n"
+        "signature": "-3387333988-import { PointWrapper } from \"./b\";\nexport declare function getPoint(): PointWrapper;\n",
+        "impliedFormat": "commonjs"
       },
       "./d.ts": {
         "original": {
           "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-17875457076-import { getPoint } from \"./c\";\ngetPoint().c.x;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./e.ts": {
         "original": {
           "version": "-5185546240-import \"./d\";",
-          "signature": "-3619301366-import \"./d\";\n"
+          "signature": "-3619301366-import \"./d\";\n",
+          "impliedFormat": 1
         },
         "version": "-5185546240-import \"./d\";",
-        "signature": "-3619301366-import \"./d\";\n"
+        "signature": "-3619301366-import \"./d\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1005,7 +1057,7 @@ export interface Coords {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1761
+  "size": 1869
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
index bcd859f31aab7..39a7032317346 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/file-not-exporting-a-deep-multilevel-import-that-changes.js
@@ -148,8 +148,12 @@ import "./d";
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export-with-incremental.js
index 41755afb29c45..31d0385cee4fc 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export-with-incremental.js
@@ -195,7 +195,7 @@ export declare class App {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -230,59 +230,73 @@ export declare class App {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -322,15 +336,25 @@ export declare class App {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1862
+  "size": 1988
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -433,7 +457,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -468,59 +492,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -572,7 +610,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2084
+  "size": 2210
 }
 
 
@@ -653,7 +691,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,5,6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -688,59 +726,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -780,7 +832,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1862
+  "size": 1988
 }
 
 
@@ -866,7 +918,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[7],"options":{"declaration":true},"fileIdsList":[[6],[3],[2],[4],[5]],"referencedMap":[[7,1],[4,2],[3,3],[5,4],[6,5]],"semanticDiagnosticsPerFile":[1,7,4,3,2,[5,[{"file":"./lib2/data.ts","start":121,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],6]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -901,59 +953,73 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+          "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-30573389178-import { ITest } from \"lib1/public\";\nexport class Data {\n    public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n"
+        "signature": "-15758516261-import { ITest } from \"lib1/public\";\nexport declare class Data {\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1005,7 +1071,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2084
+  "size": 2210
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export.js
index a7229caa23bad..57e8ca5797626 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/no-circular-import/export.js
@@ -196,10 +196,20 @@ export declare class App {
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
index 2f1fcf624e813..8233023fccb74 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports-with-incremental.js
@@ -222,7 +222,7 @@ export declare class App {
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -259,67 +259,83 @@ export declare class App {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -364,15 +380,25 @@ export declare class App {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2219
+  "size": 2363
 }
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -481,7 +507,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -518,67 +544,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -635,7 +677,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2441
+  "size": 2585
 }
 
 
@@ -720,7 +762,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-4369626085-export interface ITest {\n    title: string;\n}","signature":"-2463740027-export interface ITest {\n    title: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,6,5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -757,67 +799,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+          "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-4369626085-export interface ITest {\n    title: string;\n}",
-        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n"
+        "signature": "-2463740027-export interface ITest {\n    title: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -862,7 +920,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2219
+  "size": 2363
 }
 
 
@@ -952,7 +1010,7 @@ export interface ITest {
 //// [/user/username/projects/myproject/lib2/public.d.ts] file written with same contents
 //// [/user/username/projects/myproject/app.d.ts] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n"},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n"},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n"},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n"},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n"}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./lib1/tools/toolsinterface.ts","./lib1/tools/public.ts","./lib1/public.ts","./lib2/data2.ts","./lib2/data.ts","./lib2/public.ts","./app.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3501597171-export interface ITest {\n    title2: string;\n}","signature":"-3883556937-export interface ITest {\n    title2: string;\n}\n","impliedFormat":1},{"version":"-10750058173-export * from \"./toolsinterface\";","signature":"-11154536019-export * from \"./toolsinterface\";\n","impliedFormat":1},{"version":"-5078933600-export * from \"./tools/public\";","signature":"-4396051542-export * from \"./tools/public\";\n","impliedFormat":1},{"version":"-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}","signature":"-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n","impliedFormat":1},{"version":"-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}","signature":"-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n","impliedFormat":1},{"version":"-9530042629-export * from \"./data\";","signature":"-9548728731-export * from \"./data\";\n","impliedFormat":1},{"version":"-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}","signature":"-18990360330-export declare class App {\n    constructor();\n}\n","impliedFormat":1}],"root":[8],"options":{"declaration":true},"fileIdsList":[[7],[3],[2],[4,5],[6]],"referencedMap":[[8,1],[4,2],[3,3],[6,4],[5,5],[7,5]],"semanticDiagnosticsPerFile":[1,8,4,3,2,[6,[{"file":"./lib2/data.ts","start":174,"length":5,"code":2561,"category":1,"messageText":"Object literal may only specify known properties, but 'title' does not exist in type 'ITest'. Did you mean to write 'title2'?"}]],5,7]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -989,67 +1047,83 @@ export interface ITest {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/toolsinterface.ts": {
         "original": {
           "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+          "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-3501597171-export interface ITest {\n    title2: string;\n}",
-        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n"
+        "signature": "-3883556937-export interface ITest {\n    title2: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/tools/public.ts": {
         "original": {
           "version": "-10750058173-export * from \"./toolsinterface\";",
-          "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+          "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+          "impliedFormat": 1
         },
         "version": "-10750058173-export * from \"./toolsinterface\";",
-        "signature": "-11154536019-export * from \"./toolsinterface\";\n"
+        "signature": "-11154536019-export * from \"./toolsinterface\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib1/public.ts": {
         "original": {
           "version": "-5078933600-export * from \"./tools/public\";",
-          "signature": "-4396051542-export * from \"./tools/public\";\n"
+          "signature": "-4396051542-export * from \"./tools/public\";\n",
+          "impliedFormat": 1
         },
         "version": "-5078933600-export * from \"./tools/public\";",
-        "signature": "-4396051542-export * from \"./tools/public\";\n"
+        "signature": "-4396051542-export * from \"./tools/public\";\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data2.ts": {
         "original": {
           "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+          "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-11055285700-import { Data } from \"./data\";\nexport class Data2 {\n    public dat?: Data;\n}",
-        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n"
+        "signature": "-17387821545-import { Data } from \"./data\";\nexport declare class Data2 {\n    dat?: Data;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/data.ts": {
         "original": {
           "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+          "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+          "impliedFormat": 1
         },
         "version": "-2056074887-import { ITest } from \"lib1/public\"; import { Data2 } from \"./data2\";\nexport class Data {\n    public dat?: Data2; public test() {\n        const result: ITest = {\n            title: \"title\"\n        }\n        return result;\n    }\n}",
-        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n"
+        "signature": "-14170088573-import { ITest } from \"lib1/public\";\nimport { Data2 } from \"./data2\";\nexport declare class Data {\n    dat?: Data2;\n    test(): ITest;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./lib2/public.ts": {
         "original": {
           "version": "-9530042629-export * from \"./data\";",
-          "signature": "-9548728731-export * from \"./data\";\n"
+          "signature": "-9548728731-export * from \"./data\";\n",
+          "impliedFormat": 1
         },
         "version": "-9530042629-export * from \"./data\";",
-        "signature": "-9548728731-export * from \"./data\";\n"
+        "signature": "-9548728731-export * from \"./data\";\n",
+        "impliedFormat": "commonjs"
       },
       "./app.ts": {
         "original": {
           "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+          "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+          "impliedFormat": 1
         },
         "version": "-14937286564-import { Data } from \"lib2/public\";\nexport class App {\n    public constructor() {\n        new Data().test();\n    }\n}",
-        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n"
+        "signature": "-18990360330-export declare class App {\n    constructor();\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1106,7 +1180,7 @@ export interface ITest {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 2441
+  "size": 2585
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports.js
index ddf906295dfd2..6678568694d86 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/transitive-exports/yes-circular-import/exports.js
@@ -223,10 +223,20 @@ export declare class App {
 
 
 PolledWatches::
+/user/username/projects/myproject/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib1/tools/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/lib2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError-with-incremental.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError-with-incremental.js
index 3685274c1e882..350c20960325e 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError-with-incremental.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError-with-incremental.js
@@ -57,7 +57,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n","-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","9084524823-console.log(\"hi\");\nexport { }\n"],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4],"affectedFilesPendingEmit":[2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -77,23 +77,40 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
+        "original": {
+          "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+          "impliedFormat": 1
+        },
         "version": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
-        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n"
+        "signature": "-2574607723-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
+        "original": {
+          "version": "9084524823-console.log(\"hi\");\nexport { }\n",
+          "impliedFormat": 1
+        },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "9084524823-console.log(\"hi\");\nexport { }\n"
+        "signature": "9084524823-console.log(\"hi\");\nexport { }\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,15 +158,25 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1039
+  "size": 1147
 }
 
 
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -244,7 +271,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -264,31 +291,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-2574605496-import { A } from \"../shared/types/db\";\nconst a = {\n    lastName: 'sdsd'\n};",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -322,7 +360,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1189
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/shared/types/db.js]
@@ -418,7 +456,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"../src/main.ts","start":46,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],4],"affectedFilesPendingEmit":[3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -438,31 +476,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-11111345725-import { A } from \"../shared/types/db\";\nconst a: string = 10;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -514,7 +563,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1264
+  "size": 1348
 }
 
 
@@ -588,7 +637,7 @@ Output::
 
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-5014788164-export interface A {\n    name: string;\n}\n",{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n"},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../shared/types/db.ts","../src/main.ts","../src/other.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5014788164-export interface A {\n    name: string;\n}\n","impliedFormat":1},{"version":"-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"9084524823-console.log(\"hi\");\nexport { }\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"declaration":true,"noEmitOnError":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/noEmitOnError/dev-build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -608,31 +657,42 @@ Output::
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../shared/types/db.ts": {
+        "original": {
+          "version": "-5014788164-export interface A {\n    name: string;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-5014788164-export interface A {\n    name: string;\n}\n",
-        "signature": "-5014788164-export interface A {\n    name: string;\n}\n"
+        "signature": "-5014788164-export interface A {\n    name: string;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../src/main.ts": {
         "original": {
           "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-8373351622-import { A } from \"../shared/types/db\";\nconst a: string = \"hello\";",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/other.ts": {
         "original": {
           "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "9084524823-console.log(\"hi\");\nexport { }\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -666,7 +726,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1096
+  "size": 1180
 }
 
 //// [/user/username/projects/noEmitOnError/dev-build/src/main.js]
diff --git a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError.js b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError.js
index aae1c51c10c2a..ad9be5efa5923 100644
--- a/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError.js
+++ b/tests/baselines/reference/tscWatch/emitAndErrorUpdates/isolatedModulesAndD/with-noEmitOnError.js
@@ -60,8 +60,18 @@ Output::
 PolledWatches::
 /user/username/projects/noEmitOnError/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/noEmitOnError/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/shared/types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/noEmitOnError/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/extends/resolves-the-symlink-path.js b/tests/baselines/reference/tscWatch/extends/resolves-the-symlink-path.js
index f695ab2be68bf..656522a210db8 100644
--- a/tests/baselines/reference/tscWatch/extends/resolves-the-symlink-path.js
+++ b/tests/baselines/reference/tscWatch/extends/resolves-the-symlink-path.js
@@ -52,6 +52,9 @@ CreatingProgramWith::
   options: {"composite":true,"removeComments":true,"watch":true,"project":"/users/user/projects/myproject/src","extendedDiagnostics":true,"configFilePath":"/users/user/projects/myproject/src/tsconfig.json"}
 FileWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/index.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /users/user/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /users/user/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/node_modules/@types 1 undefined Type roots
@@ -78,7 +81,7 @@ export declare const x = 10;
 
 
 //// [/users/user/projects/myproject/src/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"6873164248-// some comment\nexport const x = 10;\n","signature":"-6821242887-export declare const x = 10;\n"}],"root":[2],"options":{"composite":true,"removeComments":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"6873164248-// some comment\nexport const x = 10;\n","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"removeComments":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/users/user/projects/myproject/src/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -91,19 +94,23 @@ export declare const x = 10;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "6873164248-// some comment\nexport const x = 10;\n",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "6873164248-// some comment\nexport const x = 10;\n",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -124,17 +131,23 @@ export declare const x = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 787
+  "size": 823
 }
 
 
 PolledWatches::
 /users/user/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/user/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/user/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/user/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/user/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/user/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/jsxImportSource-option-changed.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/jsxImportSource-option-changed.js
index 6de5b16cdd444..eb171c06c3032 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/jsxImportSource-option-changed.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/jsxImportSource-option-changed.js
@@ -89,8 +89,14 @@ exports.App = App;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/react/Jsx-runtime/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-lowercase.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-lowercase.js
index db873099ad539..3fa2df3844fc7 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-lowercase.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-lowercase.js
@@ -73,6 +73,8 @@ a_2.b;
 PolledWatches::
 c:/project/node_modules/@types: *new*
   {"pollingInterval":500}
+c:/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 c:/a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-uppercase.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-uppercase.js
index 7df17f58ee9eb..683163e062f49 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-uppercase.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-Windows-style-drive-root-is-uppercase.js
@@ -73,6 +73,8 @@ a_2.b;
 PolledWatches::
 C:/project/node_modules/@types: *new*
   {"pollingInterval":500}
+C:/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 C:/a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js
index a739473df229b..47121f3fc5462 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js
@@ -52,6 +52,9 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 unde
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -119,10 +122,16 @@ System.register("b", ["XY/a", "link/a"], function (exports_3, context_3) {
 
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js
index a03142c14e624..c1697dff5d363 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js
@@ -50,6 +50,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY.ts 250 und
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -99,8 +101,12 @@ link_1.b;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js
index c5a20ccb0613d..7e3beb775127c 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js
@@ -59,8 +59,12 @@ new logger_1.logger();
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js
index 96726891cb22b..34d29803273d1 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js
@@ -52,6 +52,9 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 unde
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -119,10 +122,16 @@ System.register("b", ["XY/a", "link/a"], function (exports_3, context_3) {
 
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js
index 431aa49f03f0c..6863e5649ad1d 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js
@@ -50,6 +50,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY.ts 250 und
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -99,8 +101,12 @@ link_1.b;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js
index fa6a5bb5a9f0a..a6beae34acb31 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js
@@ -52,6 +52,9 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 unde
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/xY/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -127,10 +130,16 @@ System.register("b", ["xY/a", "link/a"], function (exports_3, context_3) {
 
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js
index 7c662ccf86142..4e255b115461a 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js
@@ -50,6 +50,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY.ts 250 und
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -107,8 +109,12 @@ link_1.b;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js
index 30cdfd160c112..09120556a4699 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js
@@ -52,6 +52,9 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 unde
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/Xy/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -127,10 +130,16 @@ System.register("b", ["Xy/a", "link/a"], function (exports_3, context_3) {
 
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js
index fe076138ece65..f339d5f69c6c9 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js
@@ -50,6 +50,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY.ts 250 und
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -107,8 +109,12 @@ link_1.b;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js
index 45e0c748f9807..90a56675eed71 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js
@@ -52,6 +52,9 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 unde
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/Xy/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -127,10 +130,16 @@ System.register("b", ["Xy/a", "link/a"], function (exports_3, context_3) {
 
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js
index d39cd0a101745..d5f4e1e7da5b3 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js
@@ -50,6 +50,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY.ts 250 und
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -107,8 +109,12 @@ link_1.b;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-relative-information-file-location-changes.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-relative-information-file-location-changes.js
index 1037a99c4452b..7209696045e58 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-relative-information-file-location-changes.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-relative-information-file-location-changes.js
@@ -98,8 +98,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-renaming-file-with-different-casing.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-renaming-file-with-different-casing.js
index 25e0c794b4320..3a62247d6909b 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-renaming-file-with-different-casing.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/when-renaming-file-with-different-casing.js
@@ -59,8 +59,12 @@ new logger_1.logger();
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/with-nodeNext-resolution.js b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/with-nodeNext-resolution.js
index 396d9fde92612..6b45de2e38a17 100644
--- a/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/with-nodeNext-resolution.js
+++ b/tests/baselines/reference/tscWatch/forceConsistentCasingInFileNames/with-nodeNext-resolution.js
@@ -108,10 +108,8 @@ File '/package.json' does not exist according to earlier cached lookups.
 node_modules/@types/yargs/index.d.ts
   Imported via "yargs" from file 'src/bin.ts' with packageId 'yargs/index.d.ts@17.0.12'
   Entry point for implicit type library 'yargs' with packageId 'yargs/index.d.ts@17.0.12'
-  File is CommonJS module because 'node_modules/@types/yargs/package.json' does not have field "type"
 src/bin.ts
   Matched by default include pattern '**/*'
-  File is CommonJS module because 'package.json' was not found
 [HH:MM:SS AM] Found 1 error. Watching for file changes.
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-incremental.js b/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-incremental.js
index 6fcbccd2cebf6..ddba3c5632b7d 100644
--- a/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-incremental.js
@@ -45,7 +45,7 @@ var classnames_1 = require("classnames");
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"1239706283-export interface Result {} export default function classNames(): Result;","-5756287633-import classNames from \"classnames\"; classNames().foo;","-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }"],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1239706283-export interface Result {} export default function classNames(): Result;","impliedFormat":1},{"version":"-5756287633-import classNames from \"classnames\"; classNames().foo;","impliedFormat":1},{"version":"-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }","impliedFormat":1}],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -69,23 +69,40 @@ var classnames_1 = require("classnames");
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/classnames/index.d.ts": {
+        "original": {
+          "version": "1239706283-export interface Result {} export default function classNames(): Result;",
+          "impliedFormat": 1
+        },
         "version": "1239706283-export interface Result {} export default function classNames(): Result;",
-        "signature": "1239706283-export interface Result {} export default function classNames(): Result;"
+        "signature": "1239706283-export interface Result {} export default function classNames(): Result;",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
+        "original": {
+          "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
+          "impliedFormat": 1
+        },
         "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
-        "signature": "-5756287633-import classNames from \"classnames\"; classNames().foo;"
+        "signature": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
+        "impliedFormat": "commonjs"
       },
       "./src/types/classnames.d.ts": {
+        "original": {
+          "version": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }",
+          "impliedFormat": 1
+        },
         "version": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }",
-        "signature": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }"
+        "signature": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -118,7 +135,7 @@ var classnames_1 = require("classnames");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1034
+  "size": 1142
 }
 
 
@@ -172,7 +189,7 @@ Found 1 error in src/index.ts:1
 
 //// [/users/username/projects/project/src/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"1239706283-export interface Result {} export default function classNames(): Result;",{"version":"-5756287633-import classNames from \"classnames\"; classNames().foo;","signature":"-3531856636-export {};\n"},"-14890340642-export {}; declare module \"classnames\" { interface Result {} }"],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./src/index.ts","start":50,"length":3,"code":2339,"category":1,"messageText":"Property 'foo' does not exist on type 'Result'."}]],4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1239706283-export interface Result {} export default function classNames(): Result;","impliedFormat":1},{"version":"-5756287633-import classNames from \"classnames\"; classNames().foo;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-14890340642-export {}; declare module \"classnames\" { interface Result {} }","impliedFormat":1}],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./src/index.ts","start":50,"length":3,"code":2339,"category":1,"messageText":"Property 'foo' does not exist on type 'Result'."}]],4]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -196,27 +213,41 @@ Found 1 error in src/index.ts:1
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/classnames/index.d.ts": {
+        "original": {
+          "version": "1239706283-export interface Result {} export default function classNames(): Result;",
+          "impliedFormat": 1
+        },
         "version": "1239706283-export interface Result {} export default function classNames(): Result;",
-        "signature": "1239706283-export interface Result {} export default function classNames(): Result;"
+        "signature": "1239706283-export interface Result {} export default function classNames(): Result;",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/types/classnames.d.ts": {
+        "original": {
+          "version": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }",
+          "impliedFormat": 1
+        },
         "version": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }",
-        "signature": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }"
+        "signature": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -261,7 +292,7 @@ Found 1 error in src/index.ts:1
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1221
+  "size": 1317
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-watch.js b/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-watch.js
index 35dec418fd1a3..7dfd0f64a36d6 100644
--- a/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/editing-module-augmentation-watch.js
@@ -50,7 +50,7 @@ var classnames_1 = require("classnames");
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"1239706283-export interface Result {} export default function classNames(): Result;","-5756287633-import classNames from \"classnames\"; classNames().foo;","-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }"],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1239706283-export interface Result {} export default function classNames(): Result;","impliedFormat":1},{"version":"-5756287633-import classNames from \"classnames\"; classNames().foo;","impliedFormat":1},{"version":"-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }","impliedFormat":1}],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,3,4]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -74,23 +74,40 @@ var classnames_1 = require("classnames");
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/classnames/index.d.ts": {
+        "original": {
+          "version": "1239706283-export interface Result {} export default function classNames(): Result;",
+          "impliedFormat": 1
+        },
         "version": "1239706283-export interface Result {} export default function classNames(): Result;",
-        "signature": "1239706283-export interface Result {} export default function classNames(): Result;"
+        "signature": "1239706283-export interface Result {} export default function classNames(): Result;",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
+        "original": {
+          "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
+          "impliedFormat": 1
+        },
         "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
-        "signature": "-5756287633-import classNames from \"classnames\"; classNames().foo;"
+        "signature": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
+        "impliedFormat": "commonjs"
       },
       "./src/types/classnames.d.ts": {
+        "original": {
+          "version": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }",
+          "impliedFormat": 1
+        },
         "version": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }",
-        "signature": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }"
+        "signature": "-16510108606-export {}; declare module \"classnames\" { interface Result { foo } }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -123,15 +140,27 @@ var classnames_1 = require("classnames");
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1034
+  "size": 1142
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/classnames/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/src/types/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -194,8 +223,20 @@ export {}; declare module "classnames" { interface Result {} }
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/classnames/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/src/types/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -232,7 +273,7 @@ Output::
 
 //// [/users/username/projects/project/src/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"1239706283-export interface Result {} export default function classNames(): Result;",{"version":"-5756287633-import classNames from \"classnames\"; classNames().foo;","signature":"-3531856636-export {};\n"},"-14890340642-export {}; declare module \"classnames\" { interface Result {} }"],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./src/index.ts","start":50,"length":3,"code":2339,"category":1,"messageText":"Property 'foo' does not exist on type 'Result'."}]],4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/classnames/index.d.ts","./src/index.ts","./src/types/classnames.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1239706283-export interface Result {} export default function classNames(): Result;","impliedFormat":1},{"version":"-5756287633-import classNames from \"classnames\"; classNames().foo;","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-14890340642-export {}; declare module \"classnames\" { interface Result {} }","impliedFormat":1}],"root":[3,4],"options":{"module":1},"fileIdsList":[[2,4],[2]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./src/index.ts","start":50,"length":3,"code":2339,"category":1,"messageText":"Property 'foo' does not exist on type 'Result'."}]],4]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -256,27 +297,41 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/classnames/index.d.ts": {
+        "original": {
+          "version": "1239706283-export interface Result {} export default function classNames(): Result;",
+          "impliedFormat": 1
+        },
         "version": "1239706283-export interface Result {} export default function classNames(): Result;",
-        "signature": "1239706283-export interface Result {} export default function classNames(): Result;"
+        "signature": "1239706283-export interface Result {} export default function classNames(): Result;",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-5756287633-import classNames from \"classnames\"; classNames().foo;",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "./src/types/classnames.d.ts": {
+        "original": {
+          "version": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }",
+          "impliedFormat": 1
+        },
         "version": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }",
-        "signature": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }"
+        "signature": "-14890340642-export {}; declare module \"classnames\" { interface Result {} }",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -321,15 +376,27 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1221
+  "size": 1317
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/classnames/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/src/types/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-incremental.js b/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-incremental.js
index 1eb71d8949fba..0a0ad27326380 100644
--- a/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-incremental.js
@@ -48,7 +48,7 @@ exports.x = tslib_1.__assign({});
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/tslib/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"1620578607-export function __assign(...args: any[]): any;","-14168389096-export const x = {...{}};"],"root":[3],"options":{"importHelpers":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/tslib/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"1620578607-export function __assign(...args: any[]): any;","impliedFormat":1},{"version":"-14168389096-export const x = {...{}};","impliedFormat":1}],"root":[3],"options":{"importHelpers":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -67,19 +67,31 @@ exports.x = tslib_1.__assign({});
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/tslib/index.d.ts": {
+        "original": {
+          "version": "1620578607-export function __assign(...args: any[]): any;",
+          "impliedFormat": 1
+        },
         "version": "1620578607-export function __assign(...args: any[]): any;",
-        "signature": "1620578607-export function __assign(...args: any[]): any;"
+        "signature": "1620578607-export function __assign(...args: any[]): any;",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14168389096-export const x = {...{}};",
+          "impliedFormat": 1
+        },
         "version": "-14168389096-export const x = {...{}};",
-        "signature": "-14168389096-export const x = {...{}};"
+        "signature": "-14168389096-export const x = {...{}};",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -103,7 +115,7 @@ exports.x = tslib_1.__assign({});
     ]
   },
   "version": "FakeTSVersion",
-  "size": 849
+  "size": 927
 }
 
 
@@ -152,7 +164,7 @@ Found 1 error in index.tsx:1
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14168389096-export const x = {...{}};","signature":"-6508651827-export declare const x: {};\n"}],"root":[2],"options":{"importHelpers":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":18,"length":5,"messageText":"This syntax requires an imported helper but module 'tslib' cannot be found.","category":1,"code":2354}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14168389096-export const x = {...{}};","signature":"-6508651827-export declare const x: {};\n","impliedFormat":1}],"root":[2],"options":{"importHelpers":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":18,"length":5,"messageText":"This syntax requires an imported helper but module 'tslib' cannot be found.","category":1,"code":2354}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -165,19 +177,23 @@ Found 1 error in index.tsx:1
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14168389096-export const x = {...{}};",
-          "signature": "-6508651827-export declare const x: {};\n"
+          "signature": "-6508651827-export declare const x: {};\n",
+          "impliedFormat": 1
         },
         "version": "-14168389096-export const x = {...{}};",
-        "signature": "-6508651827-export declare const x: {};\n"
+        "signature": "-6508651827-export declare const x: {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -208,7 +224,7 @@ Found 1 error in index.tsx:1
     ]
   },
   "version": "FakeTSVersion",
-  "size": 962
+  "size": 998
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-watch.js b/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-watch.js
index e6c69e4388c6f..65cd17704bd5d 100644
--- a/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/importHelpers-backing-types-removed-watch.js
@@ -56,8 +56,12 @@ exports.x = tslib_1.__assign({});
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -112,8 +116,12 @@ Input::
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -153,8 +161,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-incremental.js b/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-incremental.js
index 5efd0f076c1fc..b9b6c2b4dad29 100644
--- a/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-incremental.js
@@ -84,7 +84,7 @@ export { C } from "./c";
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n","1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -116,27 +116,49 @@ export { C } from "./c";
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
-        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"
+        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -184,7 +206,7 @@ export { C } from "./c";
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1083
+  "size": 1221
 }
 
 
@@ -253,7 +275,7 @@ export interface A {
 
 //// [/users/username/projects/project/index.d.ts] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n","1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -285,27 +307,49 @@ export interface A {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
-        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -353,7 +397,7 @@ export interface A {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1098
+  "size": 1236
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-watch.js b/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-watch.js
index 85ab152038b63..c35260e4cc022 100644
--- a/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/incremental-with-circular-references-watch.js
@@ -89,7 +89,7 @@ export { C } from "./c";
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n","1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -121,27 +121,49 @@ export { C } from "./c";
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
-        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n"
+        "signature": "-9690779495-import { B } from \"./b\";\nexport interface A {\n    b: B;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -189,15 +211,19 @@ export { C } from "./c";
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1083
+  "size": 1221
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -271,8 +297,12 @@ export interface A {
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -312,7 +342,7 @@ export interface A {
 
 //// [/users/username/projects/project/index.d.ts] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n","1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./c.ts","./b.ts","./a.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n","impliedFormat":1},{"version":"2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n","impliedFormat":1},{"version":"-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n","impliedFormat":1},{"version":"1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n","impliedFormat":1}],"root":[[2,5]],"options":{"declaration":true,"emitDeclarationOnly":true,"module":1,"target":1},"fileIdsList":[[3],[2],[4],[2,3,4]],"referencedMap":[[4,1],[3,2],[2,3],[5,4]],"semanticDiagnosticsPerFile":[1,4,3,2,5]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -344,27 +374,49 @@ export interface A {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./c.ts": {
+        "original": {
+          "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
-        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n"
+        "signature": "-3358372745-import { A } from \"./a\";\nexport interface C {\n    a: A;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
-        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n"
+        "signature": "2102342013-import { C } from \"./c\";\nexport interface B {\n    b: C;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
-        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n"
+        "signature": "-7623824316-import { B } from \"./b\";\nexport interface A {\n    b: B;\n    foo: any;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
+        "original": {
+          "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+          "impliedFormat": 1
+        },
         "version": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
-        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n"
+        "signature": "1286756397-export { A } from \"./a\";\nexport { B } from \"./b\";\nexport { C } from \"./c\";\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -412,15 +464,19 @@ export interface A {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1098
+  "size": 1236
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-incremental.js b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-incremental.js
index cc1534dd0901b..ee164a18a309a 100644
--- a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-incremental.js
@@ -51,7 +51,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-14760199789-export const App = () => <div propA={true}></div>;"],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -64,15 +64,22 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -105,7 +112,7 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 947
+  "size": 995
 }
 
 
@@ -163,7 +170,7 @@ Output::
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n"}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +189,32 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/react/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-          "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n"
+          "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n",
+          "impliedFormat": 1
         },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n"
+        "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +240,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1263
+  "size": 1329
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-watch.js b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-watch.js
index eb9f986555ca2..3dc373b754d22 100644
--- a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-added-watch.js
@@ -53,7 +53,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-14760199789-export const App = () => <div propA={true}></div>;"],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -66,15 +66,22 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -107,7 +114,7 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 947
+  "size": 995
 }
 
 
@@ -116,10 +123,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -188,10 +199,14 @@ PolledWatches *deleted*::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -215,7 +230,7 @@ Output::
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n"}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -234,23 +249,32 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/react/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-          "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n"
+          "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n",
+          "impliedFormat": 1
         },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n"
+        "signature": "-17269688391-export declare const App: () => import(\"react/jsx-runtime\").JSX.Element;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -276,15 +300,21 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1263
+  "size": 1329
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/react/jsx-runtime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-incremental.js b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-incremental.js
index d02a9252b3313..fed4cefc4de62 100644
--- a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-incremental.js
@@ -63,7 +63,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","-14760199789-export const App = () => <div propA={true}></div>;"],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -82,19 +82,31 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/react/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -120,7 +132,7 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1147
+  "size": 1225
 }
 
 
@@ -171,7 +183,7 @@ Found 1 error in index.tsx:1
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-11175433774-export declare const App: () => any;\n"}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-11175433774-export declare const App: () => any;\n","impliedFormat":1}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,19 +196,23 @@ Found 1 error in index.tsx:1
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-          "signature": "-11175433774-export declare const App: () => any;\n"
+          "signature": "-11175433774-export declare const App: () => any;\n",
+          "impliedFormat": 1
         },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-11175433774-export declare const App: () => any;\n"
+        "signature": "-11175433774-export declare const App: () => any;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -229,7 +245,7 @@ Found 1 error in index.tsx:1
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1025
+  "size": 1061
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-watch.js b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-watch.js
index 9c3c9f6991eb2..d847fffd0ae94 100644
--- a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-backing-types-removed-watch.js
@@ -68,7 +68,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","-14760199789-export const App = () => <div propA={true}></div>;"],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -87,19 +87,31 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/react/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -125,15 +137,21 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1147
+  "size": 1225
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/react/jsx-runtime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -191,8 +209,14 @@ Input::
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/react/jsx-runtime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -227,7 +251,7 @@ Output::
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-11175433774-export declare const App: () => any;\n"}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-11175433774-export declare const App: () => any;\n","impliedFormat":1}],"root":[2],"options":{"jsx":4,"jsxImportSource":"react","module":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.tsx","start":25,"length":24,"messageText":"Cannot find module 'react/jsx-runtime' or its corresponding type declarations.","category":1,"code":2307}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -240,19 +264,23 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-          "signature": "-11175433774-export declare const App: () => any;\n"
+          "signature": "-11175433774-export declare const App: () => any;\n",
+          "impliedFormat": 1
         },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-11175433774-export declare const App: () => any;\n"
+        "signature": "-11175433774-export declare const App: () => any;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -285,7 +313,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1025
+  "size": 1061
 }
 
 
@@ -294,8 +322,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-incremental.js b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-incremental.js
index cdf61e20bc167..5252fec742e1f 100644
--- a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-incremental.js
@@ -89,7 +89,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","-14760199789-export const App = () => <div propA={true}></div>;"],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -108,19 +108,31 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/react/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -146,7 +158,7 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1147
+  "size": 1225
 }
 
 
@@ -221,7 +233,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/preact/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n"}],"root":[3],"options":{"jsx":4,"jsxImportSource":"preact","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./index.tsx","start":30,"length":5,"code":2322,"category":1,"messageText":{"messageText":"Type '{ propA: boolean; }' is not assignable to type '{ propB?: boolean; }'.","category":1,"code":2322,"next":[{"messageText":"Property 'propA' does not exist on type '{ propB?: boolean; }'. Did you mean 'propB'?","category":1,"code":2551}]}}]],2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/preact/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"preact","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./index.tsx","start":30,"length":5,"code":2322,"category":1,"messageText":{"messageText":"Type '{ propA: boolean; }' is not assignable to type '{ propB?: boolean; }'.","category":1,"code":2322,"next":[{"messageText":"Property 'propA' does not exist on type '{ propB?: boolean; }'. Did you mean 'propB'?","category":1,"code":2551}]}}]],2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -240,23 +252,32 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/preact/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-          "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n"
+          "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n",
+          "impliedFormat": 1
         },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n"
+        "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -305,7 +326,7 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1611
+  "size": 1677
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-watch.js b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-watch.js
index 68f57cbb261d5..70a39f7a766ed 100644
--- a/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/jsxImportSource-option-changed-watch.js
@@ -94,7 +94,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","-14760199789-export const App = () => <div propA={true}></div>;"],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/react/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"react","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -113,19 +113,31 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/react/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-35656056833-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propA?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
+        "original": {
+          "version": "-14760199789-export const App = () => <div propA={true}></div>;",
+          "impliedFormat": 1
+        },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-14760199789-export const App = () => <div propA={true}></div>;"
+        "signature": "-14760199789-export const App = () => <div propA={true}></div>;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -151,15 +163,21 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1147
+  "size": 1225
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/react/jsx-runtime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -226,8 +244,14 @@ Input::
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/react/jsx-runtime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -277,7 +301,7 @@ exports.App = App;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/preact/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n"}],"root":[3],"options":{"jsx":4,"jsxImportSource":"preact","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./index.tsx","start":30,"length":5,"code":2322,"category":1,"messageText":{"messageText":"Type '{ propA: boolean; }' is not assignable to type '{ propB?: boolean; }'.","category":1,"code":2322,"next":[{"messageText":"Property 'propA' does not exist on type '{ propB?: boolean; }'. Did you mean 'propB'?","category":1,"code":2551}]}}]],2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./node_modules/preact/jsx-runtime/index.d.ts","./index.tsx"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n","impliedFormat":1},{"version":"-14760199789-export const App = () => <div propA={true}></div>;","signature":"-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n","impliedFormat":1}],"root":[3],"options":{"jsx":4,"jsxImportSource":"preact","module":1},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"./index.tsx","start":30,"length":5,"code":2322,"category":1,"messageText":{"messageText":"Type '{ propA: boolean; }' is not assignable to type '{ propB?: boolean; }'.","category":1,"code":2322,"next":[{"messageText":"Property 'propA' does not exist on type '{ propB?: boolean; }'. Did you mean 'propB'?","category":1,"code":2551}]}}]],2]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -296,23 +320,32 @@ exports.App = App;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./node_modules/preact/jsx-runtime/index.d.ts": {
+        "original": {
+          "version": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+          "impliedFormat": 1
+        },
         "version": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
-        "signature": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n"
+        "signature": "-17896129664-export namespace JSX {\n    interface Element {}\n    interface IntrinsicElements {\n        div: {\n            propB?: boolean;\n        };\n    }\n}\nexport function jsx(...args: any[]): void;\nexport function jsxs(...args: any[]): void;\nexport const Fragment: unique symbol;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.tsx": {
         "original": {
           "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-          "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n"
+          "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n",
+          "impliedFormat": 1
         },
         "version": "-14760199789-export const App = () => <div propA={true}></div>;",
-        "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n"
+        "signature": "-8162467991-export declare const App: () => import(\"preact/jsx-runtime\").JSX.Element;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -361,15 +394,21 @@ exports.App = App;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1611
+  "size": 1677
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/preact/jsx-runtime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-incremental.js b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-incremental.js
index 9644798e56d30..fd633be453839 100644
--- a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-incremental.js
@@ -59,7 +59,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-13939690350-export const y: string = 20;"],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13939690350-export const y: string = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -73,19 +73,31 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
+        "original": {
+          "version": "-13939690350-export const y: string = 20;",
+          "impliedFormat": 1
+        },
         "version": "-13939690350-export const y: string = 20;",
-        "signature": "-13939690350-export const y: string = 20;"
+        "signature": "-13939690350-export const y: string = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -121,7 +133,7 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 832
+  "size": 910
 }
 
 
@@ -180,7 +192,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n"},"-13939690350-export const y: string = 20;"],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13939690350-export const y: string = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -194,23 +206,32 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "-12438487295-export const z = 10;",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-12438487295-export const z = 10;",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
+        "original": {
+          "version": "-13939690350-export const y: string = 20;",
+          "impliedFormat": 1
+        },
         "version": "-13939690350-export const y: string = 20;",
-        "signature": "-13939690350-export const y: string = 20;"
+        "signature": "-13939690350-export const y: string = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -246,7 +267,7 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 901
+  "size": 967
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-watch.js b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-watch.js
index 6fdb6e349ab22..6f37da862a9e1 100644
--- a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-with-errors-watch.js
@@ -61,7 +61,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-13939690350-export const y: string = 20;"],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13939690350-export const y: string = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -75,19 +75,31 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
+        "original": {
+          "version": "-13939690350-export const y: string = 20;",
+          "impliedFormat": 1
+        },
         "version": "-13939690350-export const y: string = 20;",
-        "signature": "-13939690350-export const y: string = 20;"
+        "signature": "-13939690350-export const y: string = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -123,15 +135,19 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 832
+  "size": 910
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -185,8 +201,12 @@ export const z = 10;
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -225,7 +245,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n"},"-13939690350-export const y: string = 20;"],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1},{"version":"-13939690350-export const y: string = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -239,23 +259,32 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "-12438487295-export const z = 10;",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-12438487295-export const z = 10;",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
+        "original": {
+          "version": "-13939690350-export const y: string = 20;",
+          "impliedFormat": 1
+        },
         "version": "-13939690350-export const y: string = 20;",
-        "signature": "-13939690350-export const y: string = 20;"
+        "signature": "-13939690350-export const y: string = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -291,15 +320,19 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 901
+  "size": 967
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-incremental.js b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-incremental.js
index 43b472720d1b0..9c1dfba9b87ef 100644
--- a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-incremental.js
@@ -51,7 +51,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-13729954175-export const y = 20;"],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -65,19 +65,31 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
         "version": "-13729954175-export const y = 20;",
-        "signature": "-13729954175-export const y = 20;"
+        "signature": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -101,7 +113,7 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 685
+  "size": 763
 }
 
 
@@ -152,7 +164,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;",{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n"}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -166,23 +178,32 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-12438487295-export const z = 10;",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-12438487295-export const z = 10;",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -206,7 +227,7 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 754
+  "size": 820
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-watch.js b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-watch.js
index 4df93a3bee12a..32af4008a1c72 100644
--- a/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/module-compilation/own-file-emit-without-errors-watch.js
@@ -56,7 +56,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-13729954175-export const y = 20;"],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -70,19 +70,31 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
         "version": "-13729954175-export const y = 20;",
-        "signature": "-13729954175-export const y = 20;"
+        "signature": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -106,15 +118,19 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 685
+  "size": 763
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -168,8 +184,12 @@ export const z = 10;
 PolledWatches *deleted*::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -203,7 +223,7 @@ define(["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;",{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n"}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-12438487295-export const z = 10;","signature":"-7483702853-export declare const z = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"module":2},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -217,23 +237,32 @@ define(["require", "exports"], function (require, exports) {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-12438487295-export const z = 10;",
-          "signature": "-7483702853-export declare const z = 10;\n"
+          "signature": "-7483702853-export declare const z = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-12438487295-export const z = 10;",
-        "signature": "-7483702853-export declare const z = 10;\n"
+        "signature": "-7483702853-export declare const z = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -257,15 +286,19 @@ define(["require", "exports"], function (require, exports) {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 754
+  "size": 820
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-incremental.js b/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-incremental.js
index 51516f1dd7747..7e5b1f8349dac 100644
--- a/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-incremental.js
@@ -49,7 +49,7 @@ define("file2", ["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/out.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-10726455937-export const x = 10;","-13729954175-export const y = 20;"],"root":[2,3],"options":{"module":2,"outFile":"./out.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2,"outFile":"./out.js"}},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/out.tsbuildinfo.readable.baseline.txt]
 {
@@ -60,9 +60,30 @@ define("file2", ["require", "exports"], function (require, exports) {
       "./file2.ts"
     ],
     "fileInfos": {
-      "../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./file1.ts": "-10726455937-export const x = 10;",
-      "./file2.ts": "-13729954175-export const y = 20;"
+      "../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -80,7 +101,7 @@ define("file2", ["require", "exports"], function (require, exports) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 612
+  "size": 702
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-watch.js b/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-watch.js
index bd0efddd29deb..fb244f4e0ec5a 100644
--- a/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/module-compilation/with---out-watch.js
@@ -54,7 +54,7 @@ define("file2", ["require", "exports"], function (require, exports) {
 
 
 //// [/users/username/projects/project/out.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-10726455937-export const x = 10;","-13729954175-export const y = 20;"],"root":[2,3],"options":{"module":2,"outFile":"./out.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729954175-export const y = 20;","impliedFormat":1}],"root":[2,3],"options":{"module":2,"outFile":"./out.js"}},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/out.tsbuildinfo.readable.baseline.txt]
 {
@@ -65,9 +65,30 @@ define("file2", ["require", "exports"], function (require, exports) {
       "./file2.ts"
     ],
     "fileInfos": {
-      "../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./file1.ts": "-10726455937-export const x = 10;",
-      "./file2.ts": "-13729954175-export const y = 20;"
+      "../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "-13729954175-export const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "-13729954175-export const y = 20;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -85,15 +106,19 @@ define("file2", ["require", "exports"], function (require, exports) {
     }
   },
   "version": "FakeTSVersion",
-  "size": 612
+  "size": 702
 }
 
 
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-incremental.js b/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-incremental.js
index 5ee79db7a577d..110577aede7b2 100644
--- a/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-incremental.js
@@ -48,7 +48,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","affectsGlobalScope":true},{"version":"2414573776-const y: string = 20;","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","affectsGlobalScope":true,"impliedFormat":1},{"version":"2414573776-const y: string = 20;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -62,29 +62,35 @@ var y = 20;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "5029505981-const x = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2414573776-const y: string = 20;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2414573776-const y: string = 20;",
         "signature": "2414573776-const y: string = 20;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -117,7 +123,7 @@ var y = 20;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 866
+  "size": 920
 }
 
 
@@ -171,7 +177,7 @@ var z = 10;
 
 //// [/users/username/projects/project/file2.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true},{"version":"2414573776-const y: string = 20;","signature":"509180395-declare const y: string;\n","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2414573776-const y: string = 20;","signature":"509180395-declare const y: string;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -185,31 +191,37 @@ var z = 10;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "3317474623-const z = 10;",
           "signature": "-368931399-declare const z = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3317474623-const z = 10;",
         "signature": "-368931399-declare const z = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2414573776-const y: string = 20;",
           "signature": "509180395-declare const y: string;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2414573776-const y: string = 20;",
         "signature": "509180395-declare const y: string;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -242,7 +254,7 @@ var z = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 966
+  "size": 1020
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-watch.js b/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-watch.js
index 6149ca3006eb7..f5ebc714e417a 100644
--- a/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/own-file-emit-with-errors-watch.js
@@ -50,7 +50,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","affectsGlobalScope":true},{"version":"2414573776-const y: string = 20;","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","affectsGlobalScope":true,"impliedFormat":1},{"version":"2414573776-const y: string = 20;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -64,29 +64,35 @@ var y = 20;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "5029505981-const x = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2414573776-const y: string = 20;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2414573776-const y: string = 20;",
         "signature": "2414573776-const y: string = 20;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -119,7 +125,7 @@ var y = 20;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 866
+  "size": 920
 }
 
 
@@ -216,7 +222,7 @@ var z = 10;
 
 //// [/users/username/projects/project/file2.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true},{"version":"2414573776-const y: string = 20;","signature":"509180395-declare const y: string;\n","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"2414573776-const y: string = 20;","signature":"509180395-declare const y: string;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./file2.ts","start":6,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -230,31 +236,37 @@ var z = 10;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "3317474623-const z = 10;",
           "signature": "-368931399-declare const z = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3317474623-const z = 10;",
         "signature": "-368931399-declare const z = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2414573776-const y: string = 20;",
           "signature": "509180395-declare const y: string;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2414573776-const y: string = 20;",
         "signature": "509180395-declare const y: string;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -287,7 +299,7 @@ var z = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 966
+  "size": 1020
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-incremental.js b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-incremental.js
index b4f5a013fe8a1..ca79957a2629b 100644
--- a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-incremental.js
@@ -40,7 +40,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","affectsGlobalScope":true},{"version":"2026007743-const y = 20;","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026007743-const y = 20;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -54,29 +54,35 @@ var y = 20;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "5029505981-const x = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2026007743-const y = 20;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026007743-const y = 20;",
         "signature": "2026007743-const y = 20;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -97,7 +103,7 @@ var y = 20;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 720
+  "size": 774
 }
 
 
@@ -144,7 +150,7 @@ var z = 10;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -158,31 +164,37 @@ var z = 10;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "3317474623-const z = 10;",
           "signature": "-368931399-declare const z = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3317474623-const z = 10;",
         "signature": "-368931399-declare const z = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -203,7 +215,7 @@ var z = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 819
+  "size": 873
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-watch.js b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-watch.js
index 0bc14e497cbbf..c5fc9511829aa 100644
--- a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/with-commandline-parameters-that-are-not-relative-watch.js
@@ -45,7 +45,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","affectsGlobalScope":true},{"version":"2026007743-const y = 20;","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026007743-const y = 20;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -59,29 +59,35 @@ var y = 20;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "5029505981-const x = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2026007743-const y = 20;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026007743-const y = 20;",
         "signature": "2026007743-const y = 20;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,7 +108,7 @@ var y = 20;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 720
+  "size": 774
 }
 
 
@@ -195,7 +201,7 @@ var z = 10;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -209,31 +215,37 @@ var z = 10;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "3317474623-const z = 10;",
           "signature": "-368931399-declare const z = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3317474623-const z = 10;",
         "signature": "-368931399-declare const z = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -254,7 +266,7 @@ var z = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 819
+  "size": 873
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-incremental.js b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-incremental.js
index 7b4979b91e09b..58e79b0faefe0 100644
--- a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-incremental.js
@@ -40,7 +40,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","affectsGlobalScope":true},{"version":"2026007743-const y = 20;","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026007743-const y = 20;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -54,29 +54,35 @@ var y = 20;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "5029505981-const x = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2026007743-const y = 20;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026007743-const y = 20;",
         "signature": "2026007743-const y = 20;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -97,7 +103,7 @@ var y = 20;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 720
+  "size": 774
 }
 
 
@@ -143,7 +149,7 @@ var z = 10;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -157,31 +163,37 @@ var z = 10;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "3317474623-const z = 10;",
           "signature": "-368931399-declare const z = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3317474623-const z = 10;",
         "signature": "-368931399-declare const z = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -202,7 +214,7 @@ var z = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 819
+  "size": 873
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-watch.js b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-watch.js
index b2d002a407e29..fc2a2a8af37d4 100644
--- a/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/own-file-emit-without-errors/without-commandline-options-watch.js
@@ -45,7 +45,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","affectsGlobalScope":true},{"version":"2026007743-const y = 20;","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","affectsGlobalScope":true,"impliedFormat":1},{"version":"2026007743-const y = 20;","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -59,29 +59,35 @@ var y = 20;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "5029505981-const x = 10;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "2026007743-const y = 20;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "2026007743-const y = 20;",
         "signature": "2026007743-const y = 20;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -102,7 +108,7 @@ var y = 20;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 720
+  "size": 774
 }
 
 
@@ -194,7 +200,7 @@ var z = 10;
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"5029505981-const x = 10;","signature":"-4001438729-declare const x = 10;\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"3317474623-const z = 10;","signature":"-368931399-declare const z = 10;\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -208,31 +214,37 @@ var z = 10;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file1.ts": {
         "original": {
           "version": "5029505981-const x = 10;",
           "signature": "-4001438729-declare const x = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5029505981-const x = 10;",
         "signature": "-4001438729-declare const x = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "3317474623-const z = 10;",
           "signature": "-368931399-declare const z = 10;\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3317474623-const z = 10;",
         "signature": "-368931399-declare const z = 10;\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -253,7 +265,7 @@ var z = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 819
+  "size": 873
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/tsbuildinfo-has-error.js b/tests/baselines/reference/tscWatch/incremental/tsbuildinfo-has-error.js
index aab027b6db600..f2d566fbab457 100644
--- a/tests/baselines/reference/tscWatch/incremental/tsbuildinfo-has-error.js
+++ b/tests/baselines/reference/tscWatch/incremental/tsbuildinfo-has-error.js
@@ -33,7 +33,7 @@ Output::
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../a/lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;"],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../a/lib/lib.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2]},"version":"FakeTSVersion"}
 
 //// [/src/project/main.js]
 "use strict";
@@ -53,15 +53,22 @@ exports.x = 10;
       "../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -77,7 +84,7 @@ exports.x = 10;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 602
+  "size": 650
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-incremental.js b/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-incremental.js
index 807a46d053fd5..d8595701f1c19 100644
--- a/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-incremental.js
@@ -38,7 +38,7 @@ console.log(Config.value);
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./globals.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6314871648-declare namespace Config { const value: string;} ","affectsGlobalScope":true},{"version":"5371023861-console.log(Config.value);","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./globals.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6314871648-declare namespace Config { const value: string;} ","affectsGlobalScope":true,"impliedFormat":1},{"version":"5371023861-console.log(Config.value);","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -52,29 +52,35 @@ console.log(Config.value);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./globals.d.ts": {
         "original": {
           "version": "-6314871648-declare namespace Config { const value: string;} ",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-6314871648-declare namespace Config { const value: string;} ",
         "signature": "-6314871648-declare namespace Config { const value: string;} ",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "5371023861-console.log(Config.value);",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5371023861-console.log(Config.value);",
         "signature": "5371023861-console.log(Config.value);",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -95,7 +101,7 @@ console.log(Config.value);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 854
+  "size": 908
 }
 
 
@@ -143,7 +149,7 @@ Found 1 error in index.ts:1
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5371023861-console.log(Config.value);","signature":"5381-","affectsGlobalScope":true}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.ts","start":12,"length":6,"messageText":"Cannot find name 'Config'.","category":1,"code":2304}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5371023861-console.log(Config.value);","signature":"5381-","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.ts","start":12,"length":6,"messageText":"Cannot find name 'Config'.","category":1,"code":2304}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -156,21 +162,25 @@ Found 1 error in index.ts:1
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "5371023861-console.log(Config.value);",
           "signature": "5381-",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5371023861-console.log(Config.value);",
         "signature": "5381-",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -198,7 +208,7 @@ Found 1 error in index.ts:1
     ]
   },
   "version": "FakeTSVersion",
-  "size": 867
+  "size": 903
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-watch.js b/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-watch.js
index f756607e36d01..5c72e433a7a1c 100644
--- a/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/when-file-with-ambient-global-declaration-file-is-deleted-watch.js
@@ -43,7 +43,7 @@ console.log(Config.value);
 
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./globals.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6314871648-declare namespace Config { const value: string;} ","affectsGlobalScope":true},{"version":"5371023861-console.log(Config.value);","affectsGlobalScope":true}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./globals.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6314871648-declare namespace Config { const value: string;} ","affectsGlobalScope":true,"impliedFormat":1},{"version":"5371023861-console.log(Config.value);","affectsGlobalScope":true,"impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -57,29 +57,35 @@ console.log(Config.value);
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./globals.d.ts": {
         "original": {
           "version": "-6314871648-declare namespace Config { const value: string;} ",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-6314871648-declare namespace Config { const value: string;} ",
         "signature": "-6314871648-declare namespace Config { const value: string;} ",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "5371023861-console.log(Config.value);",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5371023861-console.log(Config.value);",
         "signature": "5371023861-console.log(Config.value);",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -100,7 +106,7 @@ console.log(Config.value);
     ]
   },
   "version": "FakeTSVersion",
-  "size": 854
+  "size": 908
 }
 
 
@@ -191,7 +197,7 @@ Output::
 
 //// [/users/username/projects/project/index.js] file written with same contents
 //// [/users/username/projects/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"5371023861-console.log(Config.value);","signature":"5381-","affectsGlobalScope":true}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.ts","start":12,"length":6,"messageText":"Cannot find name 'Config'.","category":1,"code":2304}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"5371023861-console.log(Config.value);","signature":"5381-","affectsGlobalScope":true,"impliedFormat":1}],"root":[2],"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./index.ts","start":12,"length":6,"messageText":"Cannot find name 'Config'.","category":1,"code":2304}]]]},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -204,21 +210,25 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "5371023861-console.log(Config.value);",
           "signature": "5381-",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "5371023861-console.log(Config.value);",
         "signature": "5381-",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -246,7 +256,7 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 867
+  "size": 903
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/with---out-incremental.js b/tests/baselines/reference/tscWatch/incremental/with---out-incremental.js
index 12c8db74047ca..d0c2f01b2c8be 100644
--- a/tests/baselines/reference/tscWatch/incremental/with---out-incremental.js
+++ b/tests/baselines/reference/tscWatch/incremental/with---out-incremental.js
@@ -38,7 +38,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/out.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","5029505981-const x = 10;","2026007743-const y = 20;"],"root":[2,3],"options":{"outFile":"./out.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"5029505981-const x = 10;","impliedFormat":1},{"version":"2026007743-const y = 20;","impliedFormat":1}],"root":[2,3],"options":{"outFile":"./out.js"}},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/out.tsbuildinfo.readable.baseline.txt]
 {
@@ -49,9 +49,30 @@ var y = 20;
       "./file2.ts"
     ],
     "fileInfos": {
-      "../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./file1.ts": "5029505981-const x = 10;",
-      "./file2.ts": "2026007743-const y = 20;"
+      "../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "5029505981-const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "5029505981-const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "2026007743-const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "2026007743-const y = 20;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -68,7 +89,7 @@ var y = 20;
     }
   },
   "version": "FakeTSVersion",
-  "size": 583
+  "size": 673
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/incremental/with---out-watch.js b/tests/baselines/reference/tscWatch/incremental/with---out-watch.js
index 15de7700866f4..19695e989d7ee 100644
--- a/tests/baselines/reference/tscWatch/incremental/with---out-watch.js
+++ b/tests/baselines/reference/tscWatch/incremental/with---out-watch.js
@@ -43,7 +43,7 @@ var y = 20;
 
 
 //// [/users/username/projects/project/out.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","5029505981-const x = 10;","2026007743-const y = 20;"],"root":[2,3],"options":{"outFile":"./out.js"}},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./file1.ts","./file2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"5029505981-const x = 10;","impliedFormat":1},{"version":"2026007743-const y = 20;","impliedFormat":1}],"root":[2,3],"options":{"outFile":"./out.js"}},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/out.tsbuildinfo.readable.baseline.txt]
 {
@@ -54,9 +54,30 @@ var y = 20;
       "./file2.ts"
     ],
     "fileInfos": {
-      "../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./file1.ts": "5029505981-const x = 10;",
-      "./file2.ts": "2026007743-const y = 20;"
+      "../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./file1.ts": {
+        "original": {
+          "version": "5029505981-const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "5029505981-const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./file2.ts": {
+        "original": {
+          "version": "2026007743-const y = 20;",
+          "impliedFormat": 1
+        },
+        "version": "2026007743-const y = 20;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -73,7 +94,7 @@ var y = 20;
     }
   },
   "version": "FakeTSVersion",
-  "size": 583
+  "size": 673
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/libraryResolution/with-config-with-redirection.js b/tests/baselines/reference/tscWatch/libraryResolution/with-config-with-redirection.js
index e7640b6f3d83c..d0e3b677caef3 100644
--- a/tests/baselines/reference/tscWatch/libraryResolution/with-config-with-redirection.js
+++ b/tests/baselines/reference/tscWatch/libraryResolution/with-config-with-redirection.js
@@ -183,8 +183,23 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/core.d.ts","/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/core.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/file.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/file2.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -205,6 +220,13 @@ DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/node_modules 1
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/node_modules 1 undefined Failed Lookup Locations
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -221,6 +243,13 @@ File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -237,14 +266,38 @@ File '/home/src/projects/node_modules/@typescript/lib-es5/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-es5/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/index.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/utils.d.ts 250 undefined Source file
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/index.d.ts 250 undefined Source file
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -265,7 +318,18 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Type roots
 node_modules/@typescript/lib-webworker/index.d.ts
@@ -328,7 +392,7 @@ export declare const x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -349,74 +413,103 @@ export declare const x = "type1";
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -454,13 +547,21 @@ export declare const x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1763
+  "size": 1979
 }
 
 
 PolledWatches::
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules: *new*
   {"pollingInterval":500}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts: *new*
@@ -587,10 +688,91 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/core.d.ts","/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -598,7 +780,7 @@ Loading module '@typescript/lib-dom' from 'node_modules' folder, target file typ
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Scoped package detected, looking in 'typescript__lib-dom'
-File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-dom.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.d.ts' does not exist.
@@ -625,6 +807,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 ../lib/lib.dom.d.ts
   Library 'lib.dom.d.ts' specified in compilerOptions
@@ -656,7 +842,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -677,74 +863,103 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -782,13 +997,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1739
+  "size": 1955
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -919,6 +1142,63 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/core.d.ts","/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
@@ -963,7 +1243,7 @@ export declare const xyz = 10;
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -984,74 +1264,103 @@ export declare const xyz = 10;
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1089,7 +1398,7 @@ export declare const xyz = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1792
+  "size": 2008
 }
 
 
@@ -1168,11 +1477,63 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/project1/core.d.ts 250 undefined Source file
 ../lib/lib.dom.d.ts
   Library 'lib.dom.d.ts' specified in compilerOptions
@@ -1199,7 +1560,7 @@ project1/typeroot1/sometype/index.d.ts
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1219,70 +1580,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1318,13 +1703,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1735
+  "size": 1921
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
@@ -1441,6 +1834,58 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
@@ -1459,7 +1904,62 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 node_modules/@typescript/lib-webworker/index.d.ts
@@ -1490,7 +1990,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[4,3,2,1,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1510,70 +2010,94 @@ project1/typeroot1/sometype/index.d.ts
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1609,13 +2133,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1759
+  "size": 1945
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts: *new*
@@ -1751,9 +2283,57 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1","/home/src/projects/project1/typeroot2"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1,/home/src/projects/project1/typeroot2'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1, /home/src/projects/project1/typeroot2'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1762,6 +2342,13 @@ File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Type roots
 node_modules/@typescript/lib-webworker/index.d.ts
@@ -1790,8 +2377,16 @@ project1/typeroot1/sometype/index.d.ts
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/typeroot2: *new*
   {"pollingInterval":500}
 
@@ -1917,9 +2512,57 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1960,6 +2603,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Type roots
@@ -1992,7 +2639,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2012,70 +2659,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2111,13 +2782,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1735
+  "size": 1921
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project1/typeroot2:
@@ -2249,14 +2928,35 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Scoped package detected, looking in 'typescript__lib-webworker'
-File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.d.ts' does not exist.
@@ -2283,11 +2983,50 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.dom.d.ts
   Library 'lib.dom.d.ts' specified in compilerOptions
 ../lib/lib.webworker.d.ts
@@ -2316,7 +3055,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2336,70 +3075,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2435,13 +3198,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1711
+  "size": 1897
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
@@ -2578,6 +3349,55 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -2593,11 +3413,63 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 ../lib/lib.dom.d.ts
   Library 'lib.dom.d.ts' specified in compilerOptions
@@ -2627,7 +3499,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.dom.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-scripthost/index.d.ts","../node_modules/@typescript/lib-es5/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,4,3,2,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2647,70 +3519,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-scripthost/index.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-es5/index.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2746,13 +3642,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1735
+  "size": 1921
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
diff --git a/tests/baselines/reference/tscWatch/libraryResolution/with-config.js b/tests/baselines/reference/tscWatch/libraryResolution/with-config.js
index 82ab0064999db..f9b5920547d99 100644
--- a/tests/baselines/reference/tscWatch/libraryResolution/with-config.js
+++ b/tests/baselines/reference/tscWatch/libraryResolution/with-config.js
@@ -144,8 +144,23 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/core.d.ts","/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/core.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/file.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/file2.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -177,6 +192,10 @@ DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/node_modules 1
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/node_modules 1 undefined Failed Lookup Locations
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -204,6 +223,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.scripthost.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -231,14 +254,35 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.es5.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/index.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/utils.d.ts 250 undefined Source file
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/index.d.ts 250 undefined Source file
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -270,7 +314,15 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Type roots
 ../lib/lib.es5.d.ts
@@ -333,7 +385,7 @@ export declare const x = "type1";
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -354,74 +406,103 @@ export declare const x = "type1";
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -459,13 +540,21 @@ export declare const x = "type1";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1667
+  "size": 1883
 }
 
 
 PolledWatches::
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules: *new*
   {"pollingInterval":500}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -604,6 +693,54 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/core.d.ts","/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
@@ -622,7 +759,58 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 ../lib/lib.es5.d.ts
@@ -655,7 +843,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-11532698187-export const x = \"type1\";","signature":"-5899226897-export declare const x = \"type1\";\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -676,74 +864,103 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11532698187-export const x = \"type1\";",
-          "signature": "-5899226897-export declare const x = \"type1\";\n"
+          "signature": "-5899226897-export declare const x = \"type1\";\n",
+          "impliedFormat": 1
         },
         "version": "-11532698187-export const x = \"type1\";",
-        "signature": "-5899226897-export declare const x = \"type1\";\n"
+        "signature": "-5899226897-export declare const x = \"type1\";\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -781,13 +998,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1691
+  "size": 1907
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.es5.d.ts:
@@ -915,6 +1140,57 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/core.d.ts","/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
@@ -959,7 +1235,7 @@ export declare const xyz = 10;
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},"-15683237936-export const core = 10;",{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./core.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15683237936-export const core = 10;","impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,10]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,8,10,9],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -980,74 +1256,103 @@ export declare const xyz = 10;
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./core.d.ts": {
+        "original": {
+          "version": "-15683237936-export const core = 10;",
+          "impliedFormat": 1
+        },
         "version": "-15683237936-export const core = 10;",
-        "signature": "-15683237936-export const core = 10;"
+        "signature": "-15683237936-export const core = 10;",
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1085,7 +1390,7 @@ export declare const xyz = 10;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1744
+  "size": 1960
 }
 
 
@@ -1164,11 +1469,57 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/project1/core.d.ts 250 undefined Source file
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
@@ -1195,7 +1546,7 @@ project1/typeroot1/sometype/index.d.ts
 
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1215,70 +1566,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1314,13 +1689,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1687
+  "size": 1873
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.es5.d.ts:
@@ -1428,10 +1811,68 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -1439,7 +1880,7 @@ Loading module '@typescript/lib-dom' from 'node_modules' folder, target file typ
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Scoped package detected, looking in 'typescript__lib-dom'
-File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-dom.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.d.ts' does not exist.
@@ -1466,6 +1907,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
@@ -1495,7 +1940,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.dom.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[2,1,4,3,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1515,70 +1960,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.dom.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1614,13 +2083,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1663
+  "size": 1849
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -1759,9 +2236,48 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1","/home/src/projects/project1/typeroot2"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1,/home/src/projects/project1/typeroot2'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1, /home/src/projects/project1/typeroot2'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1770,6 +2286,10 @@ File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it
 Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Type roots
 ../lib/lib.es5.d.ts
@@ -1798,8 +2318,16 @@ project1/typeroot1/sometype/index.d.ts
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/typeroot2: *new*
   {"pollingInterval":500}
 
@@ -1924,9 +2452,48 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1949,6 +2516,13 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Type roots
@@ -1981,7 +2555,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2001,70 +2575,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2100,13 +2698,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1687
+  "size": 1873
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project1/typeroot2:
@@ -2250,6 +2856,52 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -2265,11 +2917,60 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
@@ -2299,7 +3000,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-webworker/index.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7827135529-interface WebworkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,4,3,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2319,70 +3020,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-webworker/index.d.ts": {
         "original": {
           "version": "-7827135529-interface WebworkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7827135529-interface WebworkerInterface { }",
         "signature": "-7827135529-interface WebworkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2418,13 +3143,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1711
+  "size": 1897
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.es5.d.ts:
@@ -2549,14 +3282,39 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project1/file.ts","/home/src/projects/project1/file2.ts","/home/src/projects/project1/index.ts","/home/src/projects/project1/utils.d.ts","/home/src/projects/project1/typeroot1/sometype/index.d.ts"]
   options: {"composite":true,"typeRoots":["/home/src/projects/project1/typeroot1"],"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"watch":true,"project":"/home/src/projects/project1","explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/home/src/projects/project1/tsconfig.json"}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Scoped package detected, looking in 'typescript__lib-webworker'
-File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.d.ts' does not exist.
@@ -2583,11 +3341,47 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../lib/lib.es5.d.ts
   Library referenced via 'es5' from file 'project1/file2.ts'
   Library 'lib.es5.d.ts' specified in compilerOptions
@@ -2616,7 +3410,7 @@ project1/typeroot1/sometype/index.d.ts
 //// [/home/src/projects/project1/file2.js] file written with same contents
 //// [/home/src/projects/project1/index.js] file written with same contents
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n"},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-"},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"},"-13729955264-export const y = 10;","-12476477079-export type TheNum = \"type1\";"],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../lib/lib.es5.d.ts","../../lib/lib.webworker.d.ts","../../lib/lib.scripthost.d.ts","../node_modules/@typescript/lib-dom/index.d.ts","./file.ts","./file2.ts","./index.ts","./utils.d.ts","./typeroot1/sometype/index.d.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3990185033-interface WebWorkerInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5403980302-interface ScriptHostInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8673759361-interface DOMInterface { }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16628394009-export const file = 10;","signature":"-9025507999-export declare const file = 10;\n","impliedFormat":1},{"version":"-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n","signature":"5381-","impliedFormat":1},{"version":"-6136895998-export const x = \"type1\";export const xyz = 10;","signature":"-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1},{"version":"-12476477079-export type TheNum = \"type1\";","impliedFormat":1}],"root":[[5,9]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2,4,5,6,7,9,8],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project1/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -2636,70 +3430,94 @@ project1/typeroot1/sometype/index.d.ts
       "../../lib/lib.es5.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.webworker.d.ts": {
         "original": {
           "version": "-3990185033-interface WebWorkerInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3990185033-interface WebWorkerInterface { }",
         "signature": "-3990185033-interface WebWorkerInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../lib/lib.scripthost.d.ts": {
         "original": {
           "version": "-5403980302-interface ScriptHostInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-5403980302-interface ScriptHostInterface { }",
         "signature": "-5403980302-interface ScriptHostInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/@typescript/lib-dom/index.d.ts": {
         "original": {
           "version": "-8673759361-interface DOMInterface { }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-8673759361-interface DOMInterface { }",
         "signature": "-8673759361-interface DOMInterface { }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./file.ts": {
         "original": {
           "version": "-16628394009-export const file = 10;",
-          "signature": "-9025507999-export declare const file = 10;\n"
+          "signature": "-9025507999-export declare const file = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16628394009-export const file = 10;",
-        "signature": "-9025507999-export declare const file = 10;\n"
+        "signature": "-9025507999-export declare const file = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./file2.ts": {
         "original": {
           "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-          "signature": "5381-"
+          "signature": "5381-",
+          "impliedFormat": 1
         },
         "version": "-11916614574-/// <reference lib=\"webworker\"/>\n/// <reference lib=\"scripthost\"/>\n/// <reference lib=\"es5\"/>\n",
-        "signature": "5381-"
+        "signature": "5381-",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+          "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-6136895998-export const x = \"type1\";export const xyz = 10;",
-        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n"
+        "signature": "-9988949802-export declare const x = \"type1\";\nexport declare const xyz = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./utils.d.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       },
       "./typeroot1/sometype/index.d.ts": {
+        "original": {
+          "version": "-12476477079-export type TheNum = \"type1\";",
+          "impliedFormat": 1
+        },
         "version": "-12476477079-export type TheNum = \"type1\";",
-        "signature": "-12476477079-export type TheNum = \"type1\";"
+        "signature": "-12476477079-export type TheNum = \"type1\";",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -2735,13 +3553,21 @@ project1/typeroot1/sometype/index.d.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1687
+  "size": 1873
 }
 
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.es5.d.ts:
diff --git a/tests/baselines/reference/tscWatch/libraryResolution/without-config-with-redirection.js b/tests/baselines/reference/tscWatch/libraryResolution/without-config-with-redirection.js
index 0d62315772b09..439c484068800 100644
--- a/tests/baselines/reference/tscWatch/libraryResolution/without-config-with-redirection.js
+++ b/tests/baselines/reference/tscWatch/libraryResolution/without-config-with-redirection.js
@@ -182,10 +182,35 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: project1/core.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/utils.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/file.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/index.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/file2.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -202,6 +227,13 @@ Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webwork
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -216,6 +248,13 @@ File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -230,6 +269,13 @@ File '/home/src/projects/node_modules/@typescript/lib-es5/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-es5/index.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -244,7 +290,16 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Type roots
 node_modules/@typescript/lib-webworker/index.d.ts
@@ -294,6 +349,10 @@ exports.x = "type1";
 PolledWatches::
 /home/src/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts: *new*
@@ -402,15 +461,89 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
-File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-dom.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.d.ts' does not exist.
@@ -436,6 +569,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 ../lib/lib.dom.d.ts
   Library 'lib.dom.d.ts' specified in compilerOptions
@@ -467,6 +604,10 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -579,6 +720,56 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
@@ -678,11 +869,91 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: project1/core.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/core.d.ts 500 undefined Missing file
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
@@ -713,8 +984,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts: *new*
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
@@ -816,6 +1091,51 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
@@ -832,6 +1152,59 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 error TS6053: File 'project1/core.d.ts' not found.
@@ -866,8 +1239,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts: *new*
@@ -967,12 +1344,44 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
-File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.d.ts' does not exist.
@@ -998,10 +1407,35 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
     Root file specified for compilation
@@ -1034,8 +1468,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.webworker.d.ts: *new*
@@ -1147,6 +1585,51 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -1160,10 +1643,63 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
@@ -1197,8 +1733,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts:
diff --git a/tests/baselines/reference/tscWatch/libraryResolution/without-config.js b/tests/baselines/reference/tscWatch/libraryResolution/without-config.js
index 2be036f710516..c99d9f3af3cfb 100644
--- a/tests/baselines/reference/tscWatch/libraryResolution/without-config.js
+++ b/tests/baselines/reference/tscWatch/libraryResolution/without-config.js
@@ -143,10 +143,35 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/projects/project1/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist.
+File '/home/src/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: project1/core.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/utils.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/file.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/index.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/file2.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -173,6 +198,10 @@ Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+File '/home/src/lib/package.json' does not exist.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -197,6 +226,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.scripthost.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -221,6 +254,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-es5' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.es5.d.ts 250 undefined Source file
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
@@ -245,7 +282,13 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Type roots
 ../lib/lib.es5.d.ts
@@ -295,6 +338,10 @@ exports.x = "type1";
 PolledWatches::
 /home/src/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -415,6 +462,47 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
@@ -431,6 +519,50 @@ File '/home/src/projects/node_modules/@typescript/lib-dom/index.tsx' does not ex
 File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+File '/home/src/projects/node_modules/package.json' does not exist.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 ../lib/lib.es5.d.ts
@@ -463,6 +595,10 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.es5.d.ts:
@@ -572,6 +708,50 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
@@ -671,11 +851,79 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: project1/core.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: project1/core.d.ts 500 undefined Missing file
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
@@ -706,8 +954,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts: *new*
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.es5.d.ts:
@@ -800,15 +1052,71 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-dom/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
-File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-dom.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-dom.d.ts' does not exist.
@@ -834,6 +1142,10 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-dom' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 250 undefined Source file
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
@@ -867,8 +1179,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -983,6 +1299,42 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -996,10 +1348,54 @@ File '/home/src/projects/node_modules/@typescript/lib-webworker/index.tsx' does
 File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
@@ -1033,8 +1429,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
@@ -1134,12 +1534,56 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["project1/core.d.ts","project1/utils.d.ts","project1/file.ts","project1/index.ts","project1/file2.ts"]
   options: {"watch":true,"lib":["lib.es5.d.ts","lib.dom.d.ts"],"traceResolution":true,"explainFiles":true,"extendedDiagnostics":true}
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts 250 undefined Source file
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Explicitly specified module resolution kind: 'Node10'.
 Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
-File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.ts' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.tsx' does not exist.
 File '/home/src/projects/node_modules/@typescript/lib-webworker.d.ts' does not exist.
@@ -1165,10 +1609,26 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@typescript/lib-webworker' was not resolved. ========
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 250 undefined Source file
 Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+File '/home/src/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 error TS6053: File 'project1/core.d.ts' not found.
   The file is in the program because:
     Root file specified for compilation
@@ -1201,8 +1661,12 @@ project1/file2.ts
 PolledWatches::
 /home/src/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/core.d.ts:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
diff --git a/tests/baselines/reference/tscWatch/moduleResolution/alternateResult.js b/tests/baselines/reference/tscWatch/moduleResolution/alternateResult.js
index 2d755eea1fd2a..89bed50555193 100644
--- a/tests/baselines/reference/tscWatch/moduleResolution/alternateResult.js
+++ b/tests/baselines/reference/tscWatch/moduleResolution/alternateResult.js
@@ -372,7 +372,7 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /home/src/projects/project/tscon
 
 //// [/home/src/projects/project/index.mjs]
 "use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
+export {};
 
 
 //// [/home/src/projects/project/tsconfig.tsbuildinfo]
diff --git a/tests/baselines/reference/tscWatch/moduleResolution/diagnostics-from-cache.js b/tests/baselines/reference/tscWatch/moduleResolution/diagnostics-from-cache.js
index 6cc0a62227b63..435f7467b47d3 100644
--- a/tests/baselines/reference/tscWatch/moduleResolution/diagnostics-from-cache.js
+++ b/tests/baselines/reference/tscWatch/moduleResolution/diagnostics-from-cache.js
@@ -77,12 +77,9 @@ File '/package.json' does not exist.
 
 
 //// [/user/username/projects/myproject/dist/index.js]
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-exports.thing = thing;
-var me = require("@this/package");
+import * as me from "@this/package";
 me.thing();
-function thing() { }
+export function thing() { }
 
 
 //// [/user/username/projects/myproject/types/index.d.ts]
@@ -90,10 +87,7 @@ export declare function thing(): void;
 
 
 //// [/user/username/projects/myproject/dist/index2.js]
-"use strict";
-Object.defineProperty(exports, "__esModule", { value: true });
-exports.thing = thing;
-function thing() { }
+export function thing() { }
 
 
 //// [/user/username/projects/myproject/types/index2.d.ts]
diff --git a/tests/baselines/reference/tscWatch/moduleResolution/watches-for-changes-to-package-json-main-fields.js b/tests/baselines/reference/tscWatch/moduleResolution/watches-for-changes-to-package-json-main-fields.js
index b6ebaf6be2c0c..f87ccfb805123 100644
--- a/tests/baselines/reference/tscWatch/moduleResolution/watches-for-changes-to-package-json-main-fields.js
+++ b/tests/baselines/reference/tscWatch/moduleResolution/watches-for-changes-to-package-json-main-fields.js
@@ -54,6 +54,7 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg1/package.json'.
 ======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -75,6 +76,8 @@ File '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' exis
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'.
 ======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/index.d.ts' with Package ID 'pkg2/build/index.d.ts@1.0.0'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist.
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
 ======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/build/const.js', target file types: TypeScript, Declaration.
@@ -83,6 +86,11 @@ File '/user/username/projects/myproject/packages/pkg2/build/const.ts' does not e
 File '/user/username/projects/myproject/packages/pkg2/build/const.tsx' does not exist.
 File '/user/username/projects/myproject/packages/pkg2/build/const.d.ts' exists - use it as a name resolution result.
 ======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/const.d.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -106,6 +114,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/pkg1/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/pkg2/build/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
 
@@ -114,6 +124,8 @@ FsWatches::
   {}
 /user/username/projects/myproject/packages/pkg1/index.ts: *new*
   {}
+/user/username/projects/myproject/packages/pkg1/package.json: *new*
+  {}
 /user/username/projects/myproject/packages/pkg1/tsconfig.json: *new*
   {}
 /user/username/projects/myproject/packages/pkg2/build/const.d.ts: *new*
@@ -194,6 +206,15 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg1/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg1/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -215,6 +236,11 @@ File '/user/username/projects/myproject/node_modules/pkg2/build/other.d.ts' exis
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/other.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/other.d.ts'.
 ======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/other.d.ts' with Package ID 'pkg2/build/other.d.ts@1.0.0'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 packages/pkg1/index.ts:1:15 - error TS2305: Module '"pkg2"' has no exported member 'TheNum'.
 
 1 import type { TheNum } from 'pkg2'
@@ -237,6 +263,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/pkg1/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/pkg2/build/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
 
@@ -245,6 +273,8 @@ FsWatches::
   {}
 /user/username/projects/myproject/packages/pkg1/index.ts:
   {}
+/user/username/projects/myproject/packages/pkg1/package.json:
+  {}
 /user/username/projects/myproject/packages/pkg1/tsconfig.json:
   {}
 /user/username/projects/myproject/packages/pkg2/build/other.d.ts: *new*
@@ -327,6 +357,13 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+Found 'package.json' at '/user/username/projects/myproject/packages/pkg2/package.json'.
+File '/user/username/projects/myproject/packages/pkg1/package.json' exists according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg1/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'pkg2' from '/user/username/projects/myproject/packages/pkg1/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'pkg2' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -348,6 +385,8 @@ File '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts' exis
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/user/username/projects/myproject/node_modules/pkg2/build/index.d.ts', result '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'.
 ======== Module name 'pkg2' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/index.d.ts' with Package ID 'pkg2/build/index.d.ts@1.0.0'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
 ======== Resolving module './const.js' from '/user/username/projects/myproject/packages/pkg2/build/index.d.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/packages/pkg2/build/const.js', target file types: TypeScript, Declaration.
@@ -356,6 +395,11 @@ File '/user/username/projects/myproject/packages/pkg2/build/const.ts' does not e
 File '/user/username/projects/myproject/packages/pkg2/build/const.tsx' does not exist.
 File '/user/username/projects/myproject/packages/pkg2/build/const.d.ts' exists - use it as a name resolution result.
 ======== Module name './const.js' was successfully resolved to '/user/username/projects/myproject/packages/pkg2/build/const.d.ts'. ========
+File '/user/username/projects/myproject/packages/pkg2/build/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/packages/pkg2/package.json' exists according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -373,6 +417,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/pkg1/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/pkg2/build/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
 
@@ -381,6 +427,8 @@ FsWatches::
   {}
 /user/username/projects/myproject/packages/pkg1/index.ts:
   {}
+/user/username/projects/myproject/packages/pkg1/package.json:
+  {}
 /user/username/projects/myproject/packages/pkg1/tsconfig.json:
   {}
 /user/username/projects/myproject/packages/pkg2/build/const.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/add-the-missing-module-file-for-inferred-project-should-remove-the-module-not-found-error.js b/tests/baselines/reference/tscWatch/programUpdates/add-the-missing-module-file-for-inferred-project-should-remove-the-module-not-found-error.js
index fde8b4bcee184..51230a2a41e72 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/add-the-missing-module-file-for-inferred-project-should-remove-the-module-not-found-error.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/add-the-missing-module-file-for-inferred-project-should-remove-the-module-not-found-error.js
@@ -39,6 +39,12 @@ T.bar();
 
 
 
+PolledWatches::
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
@@ -109,6 +115,12 @@ function bar() { }
 
 
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
diff --git a/tests/baselines/reference/tscWatch/programUpdates/can-correctly-update-configured-project-when-set-of-root-files-has-changed-through-include.js b/tests/baselines/reference/tscWatch/programUpdates/can-correctly-update-configured-project-when-set-of-root-files-has-changed-through-include.js
index cf01895aaec77..95a42a4b06f83 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/can-correctly-update-configured-project-when-set-of-root-files-has-changed-through-include.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/can-correctly-update-configured-project-when-set-of-root-files-has-changed-through-include.js
@@ -45,10 +45,16 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/Project/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/Project/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -118,10 +124,16 @@ exports.y = 10;
 PolledWatches::
 /user/username/projects/myproject/Project/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/Project/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/correctly-parses-wild-card-directories-from-implicit-glob-when-two-keys-differ-only-in-directory-seperator.js b/tests/baselines/reference/tscWatch/programUpdates/correctly-parses-wild-card-directories-from-implicit-glob-when-two-keys-differ-only-in-directory-seperator.js
index 9dd7a9f89c078..7dc1460256208 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/correctly-parses-wild-card-directories-from-implicit-glob-when-two-keys-differ-only-in-directory-seperator.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/correctly-parses-wild-card-directories-from-implicit-glob-when-two-keys-differ-only-in-directory-seperator.js
@@ -44,6 +44,8 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/f1.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/f2.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -77,7 +79,7 @@ export declare const y = 1;
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./f1.ts","./f2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10906998252-export const x = 1","signature":"-7495133367-export declare const x = 1;\n"},{"version":"-10905812331-export const y = 1","signature":"-6203665398-export declare const y = 1;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./f2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./f1.ts","./f2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10906998252-export const x = 1","signature":"-7495133367-export declare const x = 1;\n","impliedFormat":1},{"version":"-10905812331-export const y = 1","signature":"-6203665398-export declare const y = 1;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./f2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -91,27 +93,33 @@ export declare const y = 1;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./f1.ts": {
         "original": {
           "version": "-10906998252-export const x = 1",
-          "signature": "-7495133367-export declare const x = 1;\n"
+          "signature": "-7495133367-export declare const x = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10906998252-export const x = 1",
-        "signature": "-7495133367-export declare const x = 1;\n"
+        "signature": "-7495133367-export declare const x = 1;\n",
+        "impliedFormat": "commonjs"
       },
       "./f2.ts": {
         "original": {
           "version": "-10905812331-export const y = 1",
-          "signature": "-6203665398-export declare const y = 1;\n"
+          "signature": "-6203665398-export declare const y = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10905812331-export const y = 1",
-        "signature": "-6203665398-export declare const y = 1;\n"
+        "signature": "-6203665398-export declare const y = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,15 +144,19 @@ export declare const y = 1;
     "latestChangedDtsFile": "./f2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 852
+  "size": 906
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -228,7 +240,7 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./f1.ts","./f2.ts","./new-file.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10906998252-export const x = 1","signature":"-7495133367-export declare const x = 1;\n"},{"version":"-10905812331-export const y = 1","signature":"-6203665398-export declare const y = 1;\n"},{"version":"-11960320495-export const z = 1;","signature":"-9207164725-export declare const z = 1;\n"}],"root":[[2,4]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./new-file.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./f1.ts","./f2.ts","./new-file.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10906998252-export const x = 1","signature":"-7495133367-export declare const x = 1;\n","impliedFormat":1},{"version":"-10905812331-export const y = 1","signature":"-6203665398-export declare const y = 1;\n","impliedFormat":1},{"version":"-11960320495-export const z = 1;","signature":"-9207164725-export declare const z = 1;\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./new-file.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -243,35 +255,43 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./f1.ts": {
         "original": {
           "version": "-10906998252-export const x = 1",
-          "signature": "-7495133367-export declare const x = 1;\n"
+          "signature": "-7495133367-export declare const x = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10906998252-export const x = 1",
-        "signature": "-7495133367-export declare const x = 1;\n"
+        "signature": "-7495133367-export declare const x = 1;\n",
+        "impliedFormat": "commonjs"
       },
       "./f2.ts": {
         "original": {
           "version": "-10905812331-export const y = 1",
-          "signature": "-6203665398-export declare const y = 1;\n"
+          "signature": "-6203665398-export declare const y = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10905812331-export const y = 1",
-        "signature": "-6203665398-export declare const y = 1;\n"
+        "signature": "-6203665398-export declare const y = 1;\n",
+        "impliedFormat": "commonjs"
       },
       "./new-file.ts": {
         "original": {
           "version": "-11960320495-export const z = 1;",
-          "signature": "-9207164725-export declare const z = 1;\n"
+          "signature": "-9207164725-export declare const z = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320495-export const z = 1;",
-        "signature": "-9207164725-export declare const z = 1;\n"
+        "signature": "-9207164725-export declare const z = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -300,7 +320,7 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
     "latestChangedDtsFile": "./new-file.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 981
+  "size": 1053
 }
 
 //// [/user/username/projects/myproject/new-file.js]
@@ -318,8 +338,12 @@ export declare const z = 1;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -397,7 +421,7 @@ CreatingProgramWith::
 
 //// [/user/username/projects/myproject/f1.js] file written with same contents
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./new-file.ts","./f1.ts","./f2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-11960320495-export const z = 1;","signature":"-9207164725-export declare const z = 1;\n"},{"version":"1363236232-import { z } from \"./new-file\";export const x = 1","signature":"-7495133367-export declare const x = 1;\n"},{"version":"-10905812331-export const y = 1","signature":"-6203665398-export declare const y = 1;\n"}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,4,2],"latestChangedDtsFile":"./new-file.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./new-file.ts","./f1.ts","./f2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11960320495-export const z = 1;","signature":"-9207164725-export declare const z = 1;\n","impliedFormat":1},{"version":"1363236232-import { z } from \"./new-file\";export const x = 1","signature":"-7495133367-export declare const x = 1;\n","impliedFormat":1},{"version":"-10905812331-export const y = 1","signature":"-6203665398-export declare const y = 1;\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,4,2],"latestChangedDtsFile":"./new-file.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -417,35 +441,43 @@ CreatingProgramWith::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./new-file.ts": {
         "original": {
           "version": "-11960320495-export const z = 1;",
-          "signature": "-9207164725-export declare const z = 1;\n"
+          "signature": "-9207164725-export declare const z = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-11960320495-export const z = 1;",
-        "signature": "-9207164725-export declare const z = 1;\n"
+        "signature": "-9207164725-export declare const z = 1;\n",
+        "impliedFormat": "commonjs"
       },
       "./f1.ts": {
         "original": {
           "version": "1363236232-import { z } from \"./new-file\";export const x = 1",
-          "signature": "-7495133367-export declare const x = 1;\n"
+          "signature": "-7495133367-export declare const x = 1;\n",
+          "impliedFormat": 1
         },
         "version": "1363236232-import { z } from \"./new-file\";export const x = 1",
-        "signature": "-7495133367-export declare const x = 1;\n"
+        "signature": "-7495133367-export declare const x = 1;\n",
+        "impliedFormat": "commonjs"
       },
       "./f2.ts": {
         "original": {
           "version": "-10905812331-export const y = 1",
-          "signature": "-6203665398-export declare const y = 1;\n"
+          "signature": "-6203665398-export declare const y = 1;\n",
+          "impliedFormat": 1
         },
         "version": "-10905812331-export const y = 1",
-        "signature": "-6203665398-export declare const y = 1;\n"
+        "signature": "-6203665398-export declare const y = 1;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -478,7 +510,7 @@ CreatingProgramWith::
     "latestChangedDtsFile": "./new-file.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1037
+  "size": 1109
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/programUpdates/create-watch-without-config-file.js b/tests/baselines/reference/tscWatch/programUpdates/create-watch-without-config-file.js
index 5cdf9ff30e3bd..b91a56d95b12f 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/create-watch-without-config-file.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/create-watch-without-config-file.js
@@ -50,6 +50,10 @@ console.log(module_1.f);
 
 
 
+PolledWatches::
+/a/b/c/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/c/app.ts: *new*
   {}
diff --git a/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-configured-projects.js b/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-configured-projects.js
index ab8a4c0097c14..83ca8a5f15b3e 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-configured-projects.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-configured-projects.js
@@ -51,8 +51,12 @@ T.bar();
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -137,10 +141,14 @@ function bar() { }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -239,8 +247,12 @@ function bar() { }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-inferred-projects.js b/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-inferred-projects.js
index 11943661aff40..e5d9c3750dbfa 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-inferred-projects.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/rename-a-module-file-and-rename-back-should-restore-the-states-for-inferred-projects.js
@@ -45,6 +45,12 @@ T.bar();
 
 
 
+PolledWatches::
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
@@ -108,6 +114,12 @@ Output::
 
 //// [/users/username/projects/project/file1.js] file written with same contents
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
@@ -187,6 +199,12 @@ function bar() { }
 
 
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
diff --git a/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-file-not-in-rootDir.js b/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-file-not-in-rootDir.js
index 4f63e62777133..8173d9b2e56c4 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-file-not-in-rootDir.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-file-not-in-rootDir.js
@@ -58,8 +58,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-isolatedModules.js b/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-isolatedModules.js
index 94876e4fb1b02..0fc6a349cade7 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-isolatedModules.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/reports-errors-correctly-with-isolatedModules.js
@@ -55,8 +55,12 @@ var b = a_1.a;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/declarationDir-is-specified.js b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/declarationDir-is-specified.js
index 44ec589f03b28..200d9f9d68a44 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/declarationDir-is-specified.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/declarationDir-is-specified.js
@@ -68,8 +68,14 @@ export declare const d = 30;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -165,8 +171,14 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-and-declarationDir-is-specified.js b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-and-declarationDir-is-specified.js
index b912920657742..4cc3ae080a9e1 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-and-declarationDir-is-specified.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-and-declarationDir-is-specified.js
@@ -69,8 +69,14 @@ export declare const d = 30;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -167,8 +173,14 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-is-specified.js b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-is-specified.js
index a78182dc4cd8a..e4684888eadc6 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-is-specified.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/when-outDir-is-specified.js
@@ -59,8 +59,14 @@ define(["require", "exports"], function (require, exports) {
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -151,8 +157,14 @@ define(["require", "exports"], function (require, exports) {
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/with-outFile.js b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/with-outFile.js
index 2b6669c8852fa..36e21b56f9d86 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/with-outFile.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/with-outFile.js
@@ -56,8 +56,14 @@ define("src/file2", ["require", "exports"], function (require, exports) {
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -154,8 +160,14 @@ define("src/file3", ["require", "exports"], function (require, exports) {
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified-with-declaration-enabled.js b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified-with-declaration-enabled.js
index b01d482ab1c1f..bf2636b8cc496 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified-with-declaration-enabled.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified-with-declaration-enabled.js
@@ -67,8 +67,14 @@ export declare const d = 30;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -163,8 +169,14 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified.js b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified.js
index dd6b48be4a18f..6f3aeaed6e2c3 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-not-trigger-recompilation-because-of-program-emit/without-outDir-or-outFile-is-specified.js
@@ -58,8 +58,14 @@ define(["require", "exports"], function (require, exports) {
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -149,8 +155,14 @@ define(["require", "exports"], function (require, exports) {
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/should-properly-handle-module-resolution-changes-in-config-file.js b/tests/baselines/reference/tscWatch/programUpdates/should-properly-handle-module-resolution-changes-in-config-file.js
index 5eb54e819325c..70afb190bb79e 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/should-properly-handle-module-resolution-changes-in-config-file.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/should-properly-handle-module-resolution-changes-in-config-file.js
@@ -46,6 +46,10 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 
+PolledWatches::
+/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/file1.ts: *new*
   {}
@@ -117,6 +121,10 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 
+PolledWatches *deleted*::
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/file1.ts:
   {}
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-and-emit-when-verbatimModuleSyntax-changes.js b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-and-emit-when-verbatimModuleSyntax-changes.js
index 1279c066465e8..06448bd384839 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-and-emit-when-verbatimModuleSyntax-changes.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-and-emit-when-verbatimModuleSyntax-changes.js
@@ -58,8 +58,12 @@ function f(p) { return p; }
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-correctly-when-declaration-emit-is-disabled-in-compiler-options.js b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-correctly-when-declaration-emit-is-disabled-in-compiler-options.js
index 13a66fee10ce7..6624c5d66b40b 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-correctly-when-declaration-emit-is-disabled-in-compiler-options.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-correctly-when-declaration-emit-is-disabled-in-compiler-options.js
@@ -46,8 +46,12 @@ Output::
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-default-options.js b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-default-options.js
index ae2996656869e..189018fa1cc18 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-default-options.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-default-options.js
@@ -54,8 +54,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipDefaultLibCheck.js b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipDefaultLibCheck.js
index 7f351c8921d55..abb8692652ca6 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipDefaultLibCheck.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipDefaultLibCheck.js
@@ -49,8 +49,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipLibCheck.js b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipLibCheck.js
index e9788f4c1b28b..857d414c45ed1 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipLibCheck.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-errors-in-lib-file/when-module-file-with-global-definitions-changes/with-skipLibCheck.js
@@ -49,8 +49,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/updates-moduleResolution-when-resolveJsonModule-changes.js b/tests/baselines/reference/tscWatch/programUpdates/updates-moduleResolution-when-resolveJsonModule-changes.js
index bb4fa3dec9379..c965f0919e81d 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/updates-moduleResolution-when-resolveJsonModule-changes.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/updates-moduleResolution-when-resolveJsonModule-changes.js
@@ -52,8 +52,12 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -126,8 +130,12 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/when-changing-`allowImportingTsExtensions`-of-config-file.js b/tests/baselines/reference/tscWatch/programUpdates/when-changing-`allowImportingTsExtensions`-of-config-file.js
index 538e9aee9ead1..8a6c2f519447a 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/when-changing-`allowImportingTsExtensions`-of-config-file.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/when-changing-`allowImportingTsExtensions`-of-config-file.js
@@ -41,6 +41,8 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -60,8 +62,12 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/mypr
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/programUpdates/when-changing-checkJs-of-config-file.js b/tests/baselines/reference/tscWatch/programUpdates/when-changing-checkJs-of-config-file.js
index 1316450d771c7..7e5908acf6a76 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/when-changing-checkJs-of-config-file.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/when-changing-checkJs-of-config-file.js
@@ -43,6 +43,8 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/mypr
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -66,8 +68,12 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -157,8 +163,12 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/when-creating-new-file-in-symlinked-folder.js b/tests/baselines/reference/tscWatch/programUpdates/when-creating-new-file-in-symlinked-folder.js
index 9921b2bfd6213..101ea25f21e81 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/when-creating-new-file-in-symlinked-folder.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/when-creating-new-file-in-symlinked-folder.js
@@ -50,6 +50,11 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/folder1/module1.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/linktofolder2/module2.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/folder1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/folder2/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -81,10 +86,20 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 PolledWatches::
+/user/username/projects/myproject/client/folder1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/client/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/folder2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -180,10 +195,20 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 PolledWatches::
+/user/username/projects/myproject/client/folder1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/client/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/folder2/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/programUpdates/when-new-file-is-added-to-the-referenced-project.js b/tests/baselines/reference/tscWatch/programUpdates/when-new-file-is-added-to-the-referenced-project.js
index 27d105e097715..421cc7d543ad5 100644
--- a/tests/baselines/reference/tscWatch/programUpdates/when-new-file-is-added-to-the-referenced-project.js
+++ b/tests/baselines/reference/tscWatch/programUpdates/when-new-file-is-added-to-the-referenced-project.js
@@ -93,7 +93,7 @@ declare class class2 {
 
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,30 +107,36 @@ declare class class2 {
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -151,7 +157,7 @@ declare class class2 {
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 864
+  "size": 918
 }
 
 
@@ -385,7 +391,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -400,39 +406,47 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.d.ts": {
         "original": {
           "version": "-3469165364-declare class class3 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469165364-declare class class3 {}",
         "signature": "-3469165364-declare class class3 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -454,7 +468,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 968
+  "size": 1040
 }
 
 
@@ -589,7 +603,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -603,30 +617,36 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -645,7 +665,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 860
+  "size": 914
 }
 
 
@@ -782,7 +802,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -797,39 +817,47 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.d.ts": {
         "original": {
           "version": "-3469165364-declare class class3 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469165364-declare class class3 {}",
         "signature": "-3469165364-declare class class3 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -851,7 +879,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 968
+  "size": 1040
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/projectsWithReferences/on-sample-project.js b/tests/baselines/reference/tscWatch/projectsWithReferences/on-sample-project.js
index d923379d357a8..cd4a6ae852825 100644
--- a/tests/baselines/reference/tscWatch/projectsWithReferences/on-sample-project.js
+++ b/tests/baselines/reference/tscWatch/projectsWithReferences/on-sample-project.js
@@ -127,7 +127,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -142,36 +142,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -203,7 +211,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 //// [/user/username/projects/sample1/logic/index.js.map]
@@ -229,7 +237,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -250,27 +258,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -300,7 +322,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 //// [/user/username/projects/sample1/tests/index.js]
@@ -321,7 +343,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -347,31 +369,50 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
+        },
         "version": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -405,7 +446,7 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1538
+  "size": 1664
 }
 
 
@@ -414,6 +455,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+File '/user/username/projects/sample1/tests/package.json' does not exist.
+File '/user/username/projects/sample1/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../core/index' from '/user/username/projects/sample1/tests/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/sample1/core/index', target file types: TypeScript, Declaration.
@@ -429,10 +476,31 @@ Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/sample1/core/anotherModule', target file types: TypeScript, Declaration.
 File '/user/username/projects/sample1/core/anotherModule.ts' exists - use it as a name resolution result.
 ======== Module name '../core/anotherModule' was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'. ========
+File '/user/username/projects/sample1/core/package.json' does not exist.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/logic/package.json' does not exist.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../core/anotherModule' from '/user/username/projects/sample1/logic/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/sample1/logic/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '../core/anotherModule' was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'. ========
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 core/index.d.ts
@@ -455,10 +523,20 @@ tests/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/tests/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -562,7 +640,7 @@ function foo() { }
 //# sourceMappingURL=index.js.map
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-6497638357-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-6497638357-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -583,27 +661,41 @@ function foo() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-6497638357-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-6497638357-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -633,7 +725,7 @@ function foo() { }
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1416
+  "size": 1512
 }
 
 
@@ -679,7 +771,7 @@ export declare function gfoo(): void;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }","signature":"-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }","signature":"-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -700,27 +792,41 @@ export declare function gfoo(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }",
-          "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"
+          "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }",
-        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"
+        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -750,7 +856,7 @@ export declare function gfoo(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1482
+  "size": 1578
 }
 
 
@@ -765,6 +871,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/logic/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/tests/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../core/anotherModule' from '/user/username/projects/sample1/logic/index.ts' of old program, it was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
@@ -786,7 +919,7 @@ tests/index.ts
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -812,31 +945,50 @@ tests/index.ts
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/index.d.ts": {
+        "original": {
+          "version": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
-        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"
+        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -870,7 +1022,7 @@ tests/index.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1578
+  "size": 1704
 }
 
 
@@ -961,7 +1113,7 @@ function gfoo() { }
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }","signature":"-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"declarationDir":"./decls"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./decls/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }","signature":"-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"declarationDir":"./decls"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./decls/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -982,27 +1134,41 @@ function gfoo() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }",
-          "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"
+          "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-1796860121-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\nfunction foo() { }export function gfoo() { }",
-        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"
+        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1031,7 +1197,7 @@ function gfoo() { }
     "latestChangedDtsFile": "./decls/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1471
+  "size": 1567
 }
 
 //// [/user/username/projects/sample1/logic/decls/index.d.ts]
@@ -1053,13 +1219,41 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/sample1/tests/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../core/index' from '/user/username/projects/sample1/tests/index.ts' of old program, it was successfully resolved to '/user/username/projects/sample1/core/index.ts'.
 Reusing resolution of module '../logic/index' from '/user/username/projects/sample1/tests/index.ts' of old program, it was successfully resolved to '/user/username/projects/sample1/logic/index.ts'.
 Reusing resolution of module '../core/anotherModule' from '/user/username/projects/sample1/tests/index.ts' of old program, it was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'.
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/logic/decls/package.json' does not exist.
+File '/user/username/projects/sample1/logic/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../core/anotherModule' from '/user/username/projects/sample1/logic/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/sample1/logic/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '../core/anotherModule' was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'. ========
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 core/index.d.ts
@@ -1080,7 +1274,7 @@ tests/index.ts
 
 //// [/user/username/projects/sample1/tests/index.js] file written with same contents
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/decls/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n","-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","../logic/decls/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n","impliedFormat":1},{"version":"-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[5],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true},"fileIdsList":[[3],[2,3,4]],"referencedMap":[[4,1],[5,2]],"semanticDiagnosticsPerFile":[1,3,2,4,5],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/tests/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -1106,31 +1300,50 @@ tests/index.ts
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "../logic/decls/index.d.ts": {
+        "original": {
+          "version": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
-        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n"
+        "signature": "-11367551051-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-11950676699-import * as c from '../core/index';\nimport * as logic from '../logic/index';\n\nc.leftPad(\"\", 10);\nlogic.getSecondsInDay();\n\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "2702201019-import * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -1164,17 +1377,29 @@ tests/index.ts
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1584
+  "size": 1710
 }
 
 
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/sample1/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/sample1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/sample1/tests/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/sample1/tests/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders-with-no-files-clause.js b/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders-with-no-files-clause.js
index eb68e04d8f105..f6e03ade8ccbd 100644
--- a/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders-with-no-files-clause.js
+++ b/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders-with-no-files-clause.js
@@ -91,7 +91,7 @@ export declare class A {
 
 
 //// [/user/username/projects/transitiveReferences/a/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7264743946-export class A {}","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7264743946-export class A {}","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/a/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare class A {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7264743946-export class A {}",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7264743946-export class A {}",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -136,7 +140,7 @@ export declare class A {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 743
+  "size": 779
 }
 
 //// [/user/username/projects/transitiveReferences/b/index.js]
@@ -153,7 +157,7 @@ export declare const b: A;
 
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-2591036212-import {A} from '@ref/a';\nexport const b = new A();","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-2591036212-import {A} from '@ref/a';\nexport const b = new A();","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -172,23 +176,32 @@ export declare const b: A;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a/index.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-2591036212-import {A} from '@ref/a';\nexport const b = new A();",
-          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+          "impliedFormat": 1
         },
         "version": "-2591036212-import {A} from '@ref/a';\nexport const b = new A();",
-        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -213,7 +226,7 @@ export declare const b: A;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 895
+  "size": 961
 }
 
 //// [/user/username/projects/transitiveReferences/c/index.js]
@@ -231,6 +244,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../b' from '/user/username/projects/transitiveReferences/c/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -251,10 +270,31 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -276,10 +316,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -396,7 +448,7 @@ export declare function gfoo(): void;
 
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }","signature":"4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }","signature":"4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -415,23 +467,32 @@ export declare function gfoo(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a/index.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }",
-          "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"
+          "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }",
-        "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"
+        "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -456,7 +517,7 @@ export declare function gfoo(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 958
+  "size": 1024
 }
 
 
@@ -471,6 +532,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
@@ -585,6 +673,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../b' from '/user/username/projects/transitiveReferences/c/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -605,10 +699,31 @@ File '/user/username/projects/transitiveReferences/nrefs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/nrefs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/nrefs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/nrefs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/nrefs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -630,10 +745,26 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -761,6 +892,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../b' from '/user/username/projects/transitiveReferences/c/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -781,10 +918,31 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -806,10 +964,26 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -938,12 +1112,39 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/nrefs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/nrefs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 nrefs/a.d.ts
@@ -963,10 +1164,26 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1095,12 +1312,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 refs/a.d.ts
@@ -1119,10 +1357,24 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1227,8 +1479,20 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 'baseUrl' option is set to '/user/username/projects/transitiveReferences/c', using this value to resolve non-relative module name '@ref/a'.
@@ -1240,6 +1504,15 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 c/tsconfig.json:11:5 - error TS6053: File '/user/username/projects/transitiveReferences/b' not found.
 
 11     {
@@ -1268,10 +1541,20 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1396,12 +1679,39 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -1423,10 +1733,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1541,9 +1863,36 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'.
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 b/tsconfig.json:12:5 - error TS6053: File '/user/username/projects/transitiveReferences/a' not found.
 
 12     {
@@ -1573,10 +1922,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1697,9 +2058,36 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'.
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -1720,10 +2108,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders.js b/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders.js
index b57cc21154f17..b20b817c774bd 100644
--- a/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders.js
+++ b/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references-in-different-folders.js
@@ -100,7 +100,7 @@ export declare class A {
 
 
 //// [/user/username/projects/transitiveReferences/a/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-7264743946-export class A {}","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7264743946-export class A {}","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/a/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -113,19 +113,23 @@ export declare class A {
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-7264743946-export class A {}",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7264743946-export class A {}",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -145,7 +149,7 @@ export declare class A {
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 743
+  "size": 779
 }
 
 //// [/user/username/projects/transitiveReferences/b/index.js]
@@ -162,7 +166,7 @@ export declare const b: A;
 
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-2591036212-import {A} from '@ref/a';\nexport const b = new A();","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-2591036212-import {A} from '@ref/a';\nexport const b = new A();","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export declare const b: A;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a/index.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-2591036212-import {A} from '@ref/a';\nexport const b = new A();",
-          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+          "impliedFormat": 1
         },
         "version": "-2591036212-import {A} from '@ref/a';\nexport const b = new A();",
-        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -222,7 +235,7 @@ export declare const b: A;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 895
+  "size": 961
 }
 
 //// [/user/username/projects/transitiveReferences/c/index.js]
@@ -240,6 +253,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../b' from '/user/username/projects/transitiveReferences/c/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -260,10 +279,31 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -285,10 +325,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -403,7 +455,7 @@ export declare function gfoo(): void;
 
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }","signature":"4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../a/index.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }","signature":"4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/b/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -422,23 +474,32 @@ export declare function gfoo(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../a/index.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }",
-          "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"
+          "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1841609480-import {A} from '@ref/a';\nexport const b = new A();export function gfoo() { }",
-        "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"
+        "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -463,7 +524,7 @@ export declare function gfoo(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 958
+  "size": 1024
 }
 
 
@@ -478,6 +539,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
@@ -595,6 +683,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../b' from '/user/username/projects/transitiveReferences/c/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -615,10 +709,31 @@ File '/user/username/projects/transitiveReferences/nrefs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/nrefs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/nrefs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/nrefs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/nrefs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -640,10 +755,26 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -772,6 +903,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '../b' from '/user/username/projects/transitiveReferences/c/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -792,10 +929,31 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -817,10 +975,26 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -950,12 +1124,39 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/nrefs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/nrefs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 nrefs/a.d.ts
@@ -975,10 +1176,26 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1110,12 +1327,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 refs/a.d.ts
@@ -1134,10 +1372,24 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1238,8 +1490,20 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 'baseUrl' option is set to '/user/username/projects/transitiveReferences/c', using this value to resolve non-relative module name '@ref/a'.
@@ -1251,6 +1515,15 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 c/tsconfig.json:14:5 - error TS6053: File '/user/username/projects/transitiveReferences/b' not found.
 
 14     {
@@ -1279,10 +1552,20 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1404,12 +1687,39 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/b/tsconfig.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'. ========
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -1431,10 +1741,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1547,9 +1869,36 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'.
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 b/tsconfig.json:15:5 - error TS6053: File '/user/username/projects/transitiveReferences/a' not found.
 
 15     {
@@ -1579,10 +1928,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1704,9 +2065,36 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/c/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../b' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b/index.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/b/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b/index.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a/index.ts'.
+File '/user/username/projects/transitiveReferences/a/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a/index.d.ts
@@ -1727,10 +2115,22 @@ c/index.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references.js b/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references.js
index 39bec6badfc78..a6aa7b2365445 100644
--- a/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references.js
+++ b/tests/baselines/reference/tscWatch/projectsWithReferences/on-transitive-references.js
@@ -105,7 +105,7 @@ export declare class A {
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo.readable.baseline.txt]
 {
@@ -118,19 +118,23 @@ export declare class A {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-7808316224-export class A {}\n",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7808316224-export class A {}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -150,7 +154,7 @@ export declare class A {
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 814
+  "size": 850
 }
 
 //// [/user/username/projects/transitiveReferences/b.js]
@@ -167,7 +171,7 @@ export declare const b: A;
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n","signature":"-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo.readable.baseline.txt]
 {
@@ -186,23 +190,32 @@ export declare const b: A;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n",
-          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+          "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+          "impliedFormat": 1
         },
         "version": "-3899816362-import {A} from '@ref/a';\nexport const b = new A();\n",
-        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n"
+        "signature": "-9732944696-import { A } from '@ref/a';\nexport declare const b: A;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -227,7 +240,7 @@ export declare const b: A;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 959
+  "size": 1025
 }
 
 //// [/user/username/projects/transitiveReferences/c.js]
@@ -245,6 +258,11 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module './b' from '/user/username/projects/transitiveReferences/c.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -261,10 +279,29 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a.d.ts
@@ -286,8 +323,14 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -397,7 +440,7 @@ export declare function gfoo(): void;
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-3352421102-import {A} from '@ref/a';\nexport const b = new A();\nexport function gfoo() { }","signature":"4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-3352421102-import {A} from '@ref/a';\nexport const b = new A();\nexport function gfoo() { }","signature":"4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo.readable.baseline.txt]
 {
@@ -416,23 +459,32 @@ export declare function gfoo(): void;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-3352421102-import {A} from '@ref/a';\nexport const b = new A();\nexport function gfoo() { }",
-          "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"
+          "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-3352421102-import {A} from '@ref/a';\nexport const b = new A();\nexport function gfoo() { }",
-        "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n"
+        "signature": "4376023469-import { A } from '@ref/a';\nexport declare const b: A;\nexport declare function gfoo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -457,7 +509,7 @@ export declare function gfoo(): void;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1023
+  "size": 1089
 }
 
 
@@ -472,6 +524,30 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
@@ -587,6 +663,11 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module './b' from '/user/username/projects/transitiveReferences/c.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -603,10 +684,29 @@ File '/user/username/projects/transitiveReferences/nrefs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/nrefs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/nrefs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/nrefs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/nrefs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a.d.ts
@@ -628,8 +728,18 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -752,6 +862,11 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module './b' from '/user/username/projects/transitiveReferences/c.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -768,10 +883,29 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a.d.ts
@@ -793,8 +927,18 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -918,12 +1062,37 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module './b' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/nrefs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/nrefs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 nrefs/a.d.ts
@@ -943,8 +1112,16 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1068,12 +1245,31 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module './b' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 refs/a.d.ts
@@ -1092,8 +1288,18 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/transitiveReferences/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1188,8 +1394,18 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module './b' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 'baseUrl' option is set to '/user/username/projects/transitiveReferences', using this value to resolve non-relative module name '@ref/a'.
@@ -1201,6 +1417,15 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 tsconfig.c.json:14:5 - error TS6053: File '/user/username/projects/transitiveReferences/tsconfig.b.json' not found.
 
 14     {
@@ -1229,8 +1454,14 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1343,12 +1574,36 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module './b' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Module resolution kind is not specified, using 'Node10'.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a.d.ts
@@ -1370,8 +1625,14 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1473,9 +1734,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module './b' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 tsconfig.b.json:15:5 - error TS6053: File '/user/username/projects/transitiveReferences/tsconfig.a.json' not found.
 
 15     {
@@ -1505,8 +1790,14 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1617,9 +1908,33 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module './b' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/b.ts'.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/c.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '@ref/a' from '/user/username/projects/transitiveReferences/b.ts' of old program, it was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a.d.ts
@@ -1640,8 +1955,14 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/projectsWithReferences/when-declarationMap-changes-for-dependency.js b/tests/baselines/reference/tscWatch/projectsWithReferences/when-declarationMap-changes-for-dependency.js
index 5dd82d72162ec..9f47cf9ab295a 100644
--- a/tests/baselines/reference/tscWatch/projectsWithReferences/when-declarationMap-changes-for-dependency.js
+++ b/tests/baselines/reference/tscWatch/projectsWithReferences/when-declarationMap-changes-for-dependency.js
@@ -127,7 +127,7 @@ export declare function multiply(a: number, b: number): number;
 //# sourceMappingURL=index.d.ts.map
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":true,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -142,36 +142,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -203,7 +211,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1370
+  "size": 1442
 }
 
 
@@ -212,6 +220,12 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+File '/user/username/projects/sample1/logic/package.json' does not exist.
+File '/user/username/projects/sample1/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module '../core/index' from '/user/username/projects/sample1/logic/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/sample1/core/index', target file types: TypeScript, Declaration.
@@ -222,6 +236,21 @@ Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/sample1/core/anotherModule', target file types: TypeScript, Declaration.
 File '/user/username/projects/sample1/core/anotherModule.ts' exists - use it as a name resolution result.
 ======== Module name '../core/anotherModule' was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'. ========
+File '/user/username/projects/sample1/core/package.json' does not exist.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 core/index.d.ts
@@ -259,7 +288,7 @@ export declare const m: typeof mod;
 
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","-9234818176-export declare const World = \"hello\";\n",{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../core/index.d.ts","../core/anothermodule.d.ts","./index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n","signature":"-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"declaration":true,"skipDefaultLibCheck":true,"sourceMap":true},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/logic/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -280,27 +309,41 @@ export declare const m: typeof mod;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../core/index.d.ts": {
+        "original": {
+          "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
+        },
         "version": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "../core/anothermodule.d.ts": {
+        "original": {
+          "version": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
+        },
         "version": "-9234818176-export declare const World = \"hello\";\n",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+          "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+          "impliedFormat": 1
         },
         "version": "-9623801128-import * as c from '../core/index';\nexport function getSecondsInDay() {\n    return c.multiply(10, 15);\n}\nimport * as mod from '../core/anotherModule';\nexport const m = mod;\n",
-        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n"
+        "signature": "-9659407152-export declare function getSecondsInDay(): number;\nimport * as mod from '../core/anotherModule';\nexport declare const m: typeof mod;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -330,17 +373,25 @@ export declare const m: typeof mod;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1398
+  "size": 1494
 }
 
 
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/logic/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -437,7 +488,7 @@ export declare function multiply(a: number, b: number): number;
 
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n"},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":false,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./anothermodule.ts","./index.ts","./some_decl.d.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3090574810-export const World = \"hello\";","signature":"-9234818176-export declare const World = \"hello\";\n","impliedFormat":1},{"version":"-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n","signature":"-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n","impliedFormat":1},{"version":"-7959511260-declare const dts: any;","affectsGlobalScope":true,"impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declaration":true,"declarationMap":false,"skipDefaultLibCheck":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/sample1/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -452,36 +503,44 @@ export declare function multiply(a: number, b: number): number;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./anothermodule.ts": {
         "original": {
           "version": "-3090574810-export const World = \"hello\";",
-          "signature": "-9234818176-export declare const World = \"hello\";\n"
+          "signature": "-9234818176-export declare const World = \"hello\";\n",
+          "impliedFormat": 1
         },
         "version": "-3090574810-export const World = \"hello\";",
-        "signature": "-9234818176-export declare const World = \"hello\";\n"
+        "signature": "-9234818176-export declare const World = \"hello\";\n",
+        "impliedFormat": "commonjs"
       },
       "./index.ts": {
         "original": {
           "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+          "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+          "impliedFormat": 1
         },
         "version": "-15745098553-export const someString: string = \"HELLO WORLD\";\nexport function leftPad(s: string, n: number) { return s + n; }\nexport function multiply(a: number, b: number) { return a * b; }\n",
-        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n"
+        "signature": "-7362568283-export declare const someString: string;\nexport declare function leftPad(s: string, n: number): string;\nexport declare function multiply(a: number, b: number): number;\n",
+        "impliedFormat": "commonjs"
       },
       "./some_decl.d.ts": {
         "original": {
           "version": "-7959511260-declare const dts: any;",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7959511260-declare const dts: any;",
         "signature": "-7959511260-declare const dts: any;",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -513,7 +572,7 @@ export declare function multiply(a: number, b: number): number;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1371
+  "size": 1443
 }
 
 
@@ -528,8 +587,29 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] File change detected. Starting incremental compilation...
 
+File '/user/username/projects/sample1/logic/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module '../core/index' from '/user/username/projects/sample1/logic/index.ts' of old program, it was successfully resolved to '/user/username/projects/sample1/core/index.ts'.
 Reusing resolution of module '../core/anotherModule' from '/user/username/projects/sample1/logic/index.ts' of old program, it was successfully resolved to '/user/username/projects/sample1/core/anotherModule.ts'.
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/core/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/sample1/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 core/index.d.ts
diff --git a/tests/baselines/reference/tscWatch/projectsWithReferences/when-referenced-project-uses-different-module-resolution.js b/tests/baselines/reference/tscWatch/projectsWithReferences/when-referenced-project-uses-different-module-resolution.js
index 354409d365fc8..ece0559dab4b6 100644
--- a/tests/baselines/reference/tscWatch/projectsWithReferences/when-referenced-project-uses-different-module-resolution.js
+++ b/tests/baselines/reference/tscWatch/projectsWithReferences/when-referenced-project-uses-different-module-resolution.js
@@ -98,7 +98,7 @@ export declare class A {
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n"}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-7808316224-export class A {}\n","signature":"-8728835846-export declare class A {\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./a.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.a.tsbuildinfo.readable.baseline.txt]
 {
@@ -111,19 +111,23 @@ export declare class A {
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-7808316224-export class A {}\n",
-          "signature": "-8728835846-export declare class A {\n}\n"
+          "signature": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
         },
         "version": "-7808316224-export class A {}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -143,7 +147,7 @@ export declare class A {
     "latestChangedDtsFile": "./a.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 814
+  "size": 850
 }
 
 //// [/user/username/projects/transitiveReferences/b.js]
@@ -160,7 +164,7 @@ export declare const b: A;
 
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-8728835846-export declare class A {\n}\n",{"version":"-19869990292-import {A} from \"a\";export const b = new A();","signature":"1870369234-import { A } from \"a\";\nexport declare const b: A;\n"}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.d.ts","./b.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8728835846-export declare class A {\n}\n","impliedFormat":1},{"version":"-19869990292-import {A} from \"a\";export const b = new A();","signature":"1870369234-import { A } from \"a\";\nexport declare const b: A;\n","impliedFormat":1}],"root":[3],"options":{"composite":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/transitiveReferences/tsconfig.b.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export declare const b: A;
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.d.ts": {
+        "original": {
+          "version": "-8728835846-export declare class A {\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-8728835846-export declare class A {\n}\n",
-        "signature": "-8728835846-export declare class A {\n}\n"
+        "signature": "-8728835846-export declare class A {\n}\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-19869990292-import {A} from \"a\";export const b = new A();",
-          "signature": "1870369234-import { A } from \"a\";\nexport declare const b: A;\n"
+          "signature": "1870369234-import { A } from \"a\";\nexport declare const b: A;\n",
+          "impliedFormat": 1
         },
         "version": "-19869990292-import {A} from \"a\";export const b = new A();",
-        "signature": "1870369234-import { A } from \"a\";\nexport declare const b: A;\n"
+        "signature": "1870369234-import { A } from \"a\";\nexport declare const b: A;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export declare const b: A;
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 949
+  "size": 1015
 }
 
 //// [/user/username/projects/transitiveReferences/c.js]
@@ -238,6 +251,11 @@ Output::
 >> Screen clear
 [HH:MM:SS AM] Starting compilation in watch mode...
 
+File '/user/username/projects/transitiveReferences/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module './b' from '/user/username/projects/transitiveReferences/c.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/transitiveReferences/b', target file types: TypeScript, Declaration.
@@ -254,10 +272,29 @@ File '/user/username/projects/transitiveReferences/refs/a.ts' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.tsx' does not exist.
 File '/user/username/projects/transitiveReferences/refs/a.d.ts' exists - use it as a name resolution result.
 ======== Module name '@ref/a' was successfully resolved to '/user/username/projects/transitiveReferences/refs/a.d.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'a' from '/user/username/projects/transitiveReferences/b.ts'. ========
 Using compiler options of project reference redirect '/user/username/projects/transitiveReferences/tsconfig.b.json'.
 Explicitly specified module resolution kind: 'Classic'.
 ======== Module name 'a' was successfully resolved to '/user/username/projects/transitiveReferences/a.ts'. ========
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/transitiveReferences/refs/package.json' does not exist.
+File '/user/username/projects/transitiveReferences/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 ../../../../a/lib/lib.d.ts
   Default library for target 'es5'
 a.d.ts
@@ -279,8 +316,14 @@ c.ts
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/transitiveReferences/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/transitiveReferences/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/transitiveReferences/refs/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/caching-works.js b/tests/baselines/reference/tscWatch/resolutionCache/caching-works.js
index d8a4ff33eb2d6..beb7e9c1ab8ae 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/caching-works.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/caching-works.js
@@ -51,6 +51,14 @@ define(["require", "exports"], function (require, exports) {
 
 
 
+PolledWatches::
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/d/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
@@ -190,6 +198,14 @@ define(["require", "exports"], function (require, exports) {
 
 
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/d/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
@@ -259,6 +275,14 @@ Output::
 //// [/users/username/projects/project/f1.js] file written with same contents
 //// [/users/username/projects/project/d/f0.js] file written with same contents
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/d/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-with-configFile.js b/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-with-configFile.js
index ebf84a4a5d601..3c8a457eb7d06 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-with-configFile.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-with-configFile.js
@@ -41,8 +41,16 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/somemodule/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-without-configFile.js b/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-without-configFile.js
index 410113f5dc2f0..3a6b69854538d 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-without-configFile.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/ignores-changes-in-node_modules-that-start-with-dot/watch-without-configFile.js
@@ -38,6 +38,16 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/somemodule/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/loads-missing-files-from-disk.js b/tests/baselines/reference/tscWatch/resolutionCache/loads-missing-files-from-disk.js
index f777b6a9e4936..e10c65d8f480e 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/loads-missing-files-from-disk.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/loads-missing-files-from-disk.js
@@ -39,6 +39,12 @@ define(["require", "exports"], function (require, exports) {
 
 
 
+PolledWatches::
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
@@ -99,6 +105,12 @@ Output::
 
 //// [/users/username/projects/project/foo.js] file written with same contents
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/reusing-type-ref-resolution.js b/tests/baselines/reference/tscWatch/resolutionCache/reusing-type-ref-resolution.js
index 735245ccaea82..1ec53c5791705 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/reusing-type-ref-resolution.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/reusing-type-ref-resolution.js
@@ -51,6 +51,11 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/users/username/projects/project/fileWithImports.ts","/users/username/projects/project/fileWithTypeRefs.ts"]
   options: {"composite":true,"traceResolution":true,"outDir":"/users/username/projects/project/outDir","watch":true,"explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/users/username/projects/project/tsconfig.json"}
+File '/users/username/projects/project/package.json' does not exist.
+File '/users/username/projects/package.json' does not exist.
+File '/users/username/package.json' does not exist.
+File '/users/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /users/username/projects/project/fileWithImports.ts 250 undefined Source file
 ======== Resolving module 'pkg0' from '/users/username/projects/project/fileWithImports.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -86,7 +91,19 @@ Directory '/users/username/node_modules' does not exist, skipping all lookups in
 Directory '/users/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'pkg1' was not resolved. ========
+File '/users/username/projects/project/node_modules/pkg0/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg0/index.d.ts 250 undefined Source file
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /users/username/projects/project/fileWithTypeRefs.ts 250 undefined Source file
 ======== Resolving type reference directive 'pkg2', containing file '/users/username/projects/project/fileWithTypeRefs.ts', root directory '/users/username/projects/project/node_modules/@types,/users/username/projects/node_modules/@types,/users/username/node_modules/@types,/users/node_modules/@types,/node_modules/@types'. ========
 Resolving with primary search path '/users/username/projects/project/node_modules/@types, /users/username/projects/node_modules/@types, /users/username/node_modules/@types, /users/node_modules/@types, /node_modules/@types'.
@@ -122,8 +139,22 @@ Directory '/users/username/node_modules' does not exist, skipping all lookups in
 Directory '/users/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Type reference directive 'pkg3' was not resolved. ========
+File '/users/username/projects/project/node_modules/pkg2/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg2/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg0/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Type roots
@@ -180,7 +211,7 @@ export {};
 
 
 //// [/users/username/projects/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../node_modules/pkg0/index.d.ts","../filewithimports.ts","../node_modules/pkg2/index.d.ts","../filewithtyperefs.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8124756421-export interface Import0 {}",{"version":"-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n","signature":"-3531856636-export {};\n"},{"version":"-11273315461-interface Import2 {}","affectsGlobalScope":true},{"version":"-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n","signature":"-3531856636-export {};\n"}],"root":[3,5],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2],[4]],"referencedMap":[[3,1],[5,2]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"../filewithimports.ts","start":66,"length":6,"messageText":"Cannot find module 'pkg1' or its corresponding type declarations.","category":1,"code":2307}]],[5,[{"file":"../filewithtyperefs.ts","start":102,"length":7,"messageText":"Cannot find name 'Import3'. Did you mean 'Import2'?","category":1,"code":2552}]],2,4],"latestChangedDtsFile":"./fileWithTypeRefs.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../node_modules/pkg0/index.d.ts","../filewithimports.ts","../node_modules/pkg2/index.d.ts","../filewithtyperefs.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8124756421-export interface Import0 {}","impliedFormat":1},{"version":"-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-11273315461-interface Import2 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3,5],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2],[4]],"referencedMap":[[3,1],[5,2]],"semanticDiagnosticsPerFile":[1,[3,[{"file":"../filewithimports.ts","start":66,"length":6,"messageText":"Cannot find module 'pkg1' or its corresponding type declarations.","category":1,"code":2307}]],[5,[{"file":"../filewithtyperefs.ts","start":102,"length":7,"messageText":"Cannot find name 'Import3'. Did you mean 'Import2'?","category":1,"code":2552}]],2,4],"latestChangedDtsFile":"./fileWithTypeRefs.d.ts"},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -204,40 +235,53 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg0/index.d.ts": {
+        "original": {
+          "version": "-8124756421-export interface Import0 {}",
+          "impliedFormat": 1
+        },
         "version": "-8124756421-export interface Import0 {}",
-        "signature": "-8124756421-export interface Import0 {}"
+        "signature": "-8124756421-export interface Import0 {}",
+        "impliedFormat": "commonjs"
       },
       "../filewithimports.ts": {
         "original": {
           "version": "-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg2/index.d.ts": {
         "original": {
           "version": "-11273315461-interface Import2 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-11273315461-interface Import2 {}",
         "signature": "-11273315461-interface Import2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../filewithtyperefs.ts": {
         "original": {
           "version": "-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -296,7 +340,7 @@ export {};
     "latestChangedDtsFile": "./fileWithTypeRefs.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1596
+  "size": 1698
 }
 
 
@@ -305,8 +349,16 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/pkg0/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -417,6 +469,38 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/users/username/projects/project/fileWithImports.ts","/users/username/projects/project/fileWithTypeRefs.ts"]
   options: {"composite":true,"traceResolution":true,"outDir":"/users/username/projects/project/outDir","watch":true,"explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/users/username/projects/project/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg0/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg2/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module 'pkg0' from '/users/username/projects/project/fileWithImports.ts' of old program, it was successfully resolved to '/users/username/projects/project/node_modules/pkg0/index.d.ts'.
 ======== Resolving module 'pkg1' from '/users/username/projects/project/fileWithImports.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -431,9 +515,39 @@ File '/users/username/projects/project/node_modules/pkg1/index.tsx' does not exi
 File '/users/username/projects/project/node_modules/pkg1/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/users/username/projects/project/node_modules/pkg1/index.d.ts', result '/users/username/projects/project/node_modules/pkg1/index.d.ts'.
 ======== Module name 'pkg1' was successfully resolved to '/users/username/projects/project/node_modules/pkg1/index.d.ts'. ========
+File '/users/username/projects/project/node_modules/pkg0/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg1/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg1/index.d.ts 250 undefined Source file
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'pkg2' from '/users/username/projects/project/fileWithTypeRefs.ts' of old program, it was successfully resolved to '/users/username/projects/project/node_modules/pkg2/index.d.ts'.
 Reusing resolution of type reference directive 'pkg3' from '/users/username/projects/project/fileWithTypeRefs.ts' of old program, it was not resolved.
+File '/users/username/projects/project/node_modules/pkg2/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg1/package.json 2000 undefined File location affecting resolution
 fileWithTypeRefs.ts:2:23 - error TS2688: Cannot find type definition file for 'pkg3'.
 
 2 /// <reference types="pkg3"/>
@@ -462,7 +576,7 @@ fileWithTypeRefs.ts
 
 //// [/users/username/projects/project/outDir/fileWithImports.js] file written with same contents
 //// [/users/username/projects/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../node_modules/pkg0/index.d.ts","../node_modules/pkg1/index.d.ts","../filewithimports.ts","../node_modules/pkg2/index.d.ts","../filewithtyperefs.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8124756421-export interface Import0 {}","-8124720484-export interface Import1 {}",{"version":"-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n","signature":"-3531856636-export {};\n"},{"version":"-11273315461-interface Import2 {}","affectsGlobalScope":true},{"version":"-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n","signature":"-3531856636-export {};\n"}],"root":[4,6],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2,3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,4,[6,[{"file":"../filewithtyperefs.ts","start":102,"length":7,"messageText":"Cannot find name 'Import3'. Did you mean 'Import2'?","category":1,"code":2552}]],2,3,5],"latestChangedDtsFile":"./fileWithTypeRefs.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../node_modules/pkg0/index.d.ts","../node_modules/pkg1/index.d.ts","../filewithimports.ts","../node_modules/pkg2/index.d.ts","../filewithtyperefs.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8124756421-export interface Import0 {}","impliedFormat":1},{"version":"-8124720484-export interface Import1 {}","impliedFormat":1},{"version":"-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-11273315461-interface Import2 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4,6],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2,3],[5]],"referencedMap":[[4,1],[6,2]],"semanticDiagnosticsPerFile":[1,4,[6,[{"file":"../filewithtyperefs.ts","start":102,"length":7,"messageText":"Cannot find name 'Import3'. Did you mean 'Import2'?","category":1,"code":2552}]],2,3,5],"latestChangedDtsFile":"./fileWithTypeRefs.d.ts"},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -488,44 +602,62 @@ fileWithTypeRefs.ts
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg0/index.d.ts": {
+        "original": {
+          "version": "-8124756421-export interface Import0 {}",
+          "impliedFormat": 1
+        },
         "version": "-8124756421-export interface Import0 {}",
-        "signature": "-8124756421-export interface Import0 {}"
+        "signature": "-8124756421-export interface Import0 {}",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg1/index.d.ts": {
+        "original": {
+          "version": "-8124720484-export interface Import1 {}",
+          "impliedFormat": 1
+        },
         "version": "-8124720484-export interface Import1 {}",
-        "signature": "-8124720484-export interface Import1 {}"
+        "signature": "-8124720484-export interface Import1 {}",
+        "impliedFormat": "commonjs"
       },
       "../filewithimports.ts": {
         "original": {
           "version": "-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg2/index.d.ts": {
         "original": {
           "version": "-11273315461-interface Import2 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-11273315461-interface Import2 {}",
         "signature": "-11273315461-interface Import2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../filewithtyperefs.ts": {
         "original": {
           "version": "-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -574,7 +706,7 @@ fileWithTypeRefs.ts
     "latestChangedDtsFile": "./fileWithTypeRefs.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1510
+  "size": 1642
 }
 
 
@@ -583,8 +715,18 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/pkg0/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/pkg1/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -693,8 +835,66 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/users/username/projects/project/fileWithImports.ts","/users/username/projects/project/fileWithTypeRefs.ts"]
   options: {"composite":true,"traceResolution":true,"outDir":"/users/username/projects/project/outDir","watch":true,"explainFiles":true,"extendedDiagnostics":true,"configFilePath":"/users/username/projects/project/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg0/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg1/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg2/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of module 'pkg0' from '/users/username/projects/project/fileWithImports.ts' of old program, it was successfully resolved to '/users/username/projects/project/node_modules/pkg0/index.d.ts'.
 Reusing resolution of module 'pkg1' from '/users/username/projects/project/fileWithImports.ts' of old program, it was successfully resolved to '/users/username/projects/project/node_modules/pkg1/index.d.ts'.
+File '/users/username/projects/project/node_modules/pkg0/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg1/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 Reusing resolution of type reference directive 'pkg2' from '/users/username/projects/project/fileWithTypeRefs.ts' of old program, it was successfully resolved to '/users/username/projects/project/node_modules/pkg2/index.d.ts'.
 ======== Resolving type reference directive 'pkg3', containing file '/users/username/projects/project/fileWithTypeRefs.ts', root directory '/users/username/projects/project/node_modules/@types,/users/username/projects/node_modules/@types,/users/username/node_modules/@types,/users/node_modules/@types,/node_modules/@types'. ========
 Resolving with primary search path '/users/username/projects/project/node_modules/@types, /users/username/projects/node_modules/@types, /users/username/node_modules/@types, /users/node_modules/@types, /node_modules/@types'.
@@ -710,7 +910,25 @@ File '/users/username/projects/project/node_modules/pkg3.d.ts' does not exist.
 File '/users/username/projects/project/node_modules/pkg3/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/users/username/projects/project/node_modules/pkg3/index.d.ts', result '/users/username/projects/project/node_modules/pkg3/index.d.ts'.
 ======== Type reference directive 'pkg3' was successfully resolved to '/users/username/projects/project/node_modules/pkg3/index.d.ts', primary: false. ========
+File '/users/username/projects/project/node_modules/pkg2/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/pkg3/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/project/package.json' does not exist according to earlier cached lookups.
+File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/users/username/package.json' does not exist according to earlier cached lookups.
+File '/users/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg3/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/pkg3/package.json 2000 undefined File location affecting resolution
 fileWithTypeRefs.ts:3:43 - error TS2552: Cannot find name 'Import3'. Did you mean 'Import2'?
 
 3 interface LocalInterface extends Import2, Import3 {}
@@ -736,7 +954,7 @@ fileWithTypeRefs.ts
 
 //// [/users/username/projects/project/outDir/fileWithTypeRefs.js] file written with same contents
 //// [/users/username/projects/project/outDir/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../node_modules/pkg0/index.d.ts","../node_modules/pkg1/index.d.ts","../filewithimports.ts","../node_modules/pkg2/index.d.ts","../node_modules/pkg3/index.d.ts","../filewithtyperefs.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8124756421-export interface Import0 {}","-8124720484-export interface Import1 {}",{"version":"-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n","signature":"-3531856636-export {};\n"},{"version":"-11273315461-interface Import2 {}","affectsGlobalScope":true},"-8124648610-export interface Import3 {}",{"version":"-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n","signature":"-3531856636-export {};\n"}],"root":[4,7],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2,3],[5,6]],"referencedMap":[[4,1],[7,2]],"semanticDiagnosticsPerFile":[1,4,[7,[{"file":"../filewithtyperefs.ts","start":102,"length":7,"messageText":"Cannot find name 'Import3'. Did you mean 'Import2'?","category":1,"code":2552}]],2,3,5,6],"latestChangedDtsFile":"./fileWithTypeRefs.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../node_modules/pkg0/index.d.ts","../node_modules/pkg1/index.d.ts","../filewithimports.ts","../node_modules/pkg2/index.d.ts","../node_modules/pkg3/index.d.ts","../filewithtyperefs.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8124756421-export interface Import0 {}","impliedFormat":1},{"version":"-8124720484-export interface Import1 {}","impliedFormat":1},{"version":"-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-11273315461-interface Import2 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8124648610-export interface Import3 {}","impliedFormat":1},{"version":"-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4,7],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2,3],[5,6]],"referencedMap":[[4,1],[7,2]],"semanticDiagnosticsPerFile":[1,4,[7,[{"file":"../filewithtyperefs.ts","start":102,"length":7,"messageText":"Cannot find name 'Import3'. Did you mean 'Import2'?","category":1,"code":2552}]],2,3,5,6],"latestChangedDtsFile":"./fileWithTypeRefs.d.ts"},"version":"FakeTSVersion"}
 
 //// [/users/username/projects/project/outDir/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -764,48 +982,71 @@ fileWithTypeRefs.ts
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg0/index.d.ts": {
+        "original": {
+          "version": "-8124756421-export interface Import0 {}",
+          "impliedFormat": 1
+        },
         "version": "-8124756421-export interface Import0 {}",
-        "signature": "-8124756421-export interface Import0 {}"
+        "signature": "-8124756421-export interface Import0 {}",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg1/index.d.ts": {
+        "original": {
+          "version": "-8124720484-export interface Import1 {}",
+          "impliedFormat": 1
+        },
         "version": "-8124720484-export interface Import1 {}",
-        "signature": "-8124720484-export interface Import1 {}"
+        "signature": "-8124720484-export interface Import1 {}",
+        "impliedFormat": "commonjs"
       },
       "../filewithimports.ts": {
         "original": {
           "version": "-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-14287751515-import type { Import0 } from \"pkg0\";\nimport type { Import1 } from \"pkg1\";\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg2/index.d.ts": {
         "original": {
           "version": "-11273315461-interface Import2 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-11273315461-interface Import2 {}",
         "signature": "-11273315461-interface Import2 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../node_modules/pkg3/index.d.ts": {
+        "original": {
+          "version": "-8124648610-export interface Import3 {}",
+          "impliedFormat": 1
+        },
         "version": "-8124648610-export interface Import3 {}",
-        "signature": "-8124648610-export interface Import3 {}"
+        "signature": "-8124648610-export interface Import3 {}",
+        "impliedFormat": "commonjs"
       },
       "../filewithtyperefs.ts": {
         "original": {
           "version": "-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-12735305811-/// <reference types=\"pkg2\"/>\n/// <reference types=\"pkg3\"/>\ninterface LocalInterface extends Import2, Import3 {}\nexport {}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -856,7 +1097,7 @@ fileWithTypeRefs.ts
     "latestChangedDtsFile": "./fileWithTypeRefs.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1590
+  "size": 1752
 }
 
 
@@ -865,8 +1106,20 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/node_modules/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/pkg0/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/pkg1/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/pkg3/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/scoped-package-installation.js b/tests/baselines/reference/tscWatch/resolutionCache/scoped-package-installation.js
index a757843ef97d9..29f9872bbb4d6 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/scoped-package-installation.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/scoped-package-installation.js
@@ -34,6 +34,12 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/lib/app.ts"]
   options: {"watch":true,"project":"/user/username/projects/myproject","traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/user/username/projects/myproject/lib/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/lib/app.ts 250 undefined Source file
 ======== Resolving module '@myapp/ts-types' from '/user/username/projects/myproject/lib/app.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -60,6 +66,9 @@ Directory '/user/username/node_modules' does not exist, skipping all lookups in
 Directory '/user/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@myapp/ts-types' was not resolved. ========
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/lib 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/lib 1 undefined Failed Lookup Locations
@@ -67,6 +76,9 @@ DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_mod
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Failed Lookup Locations
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/lib/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -93,14 +105,20 @@ var x = ts_types_1.myapp;
 
 
 PolledWatches::
+/user/username/projects/myproject/lib/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -174,12 +192,18 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
 
 
 PolledWatches::
+/user/username/projects/myproject/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
@@ -231,6 +255,21 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/lib/app.ts"]
   options: {"watch":true,"project":"/user/username/projects/myproject","traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/lib/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/lib/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@myapp/ts-types' from '/user/username/projects/myproject/lib/app.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module '@myapp/ts-types' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -255,6 +294,9 @@ Directory '/user/username/node_modules' does not exist, skipping all lookups in
 Directory '/user/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@myapp/ts-types' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/app.ts:1:23 - error TS2307: Cannot find module '@myapp/ts-types' or its corresponding type declarations.
 
 1 import { myapp } from "@myapp/ts-types";
@@ -345,6 +387,21 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/lib/app.ts"]
   options: {"watch":true,"project":"/user/username/projects/myproject","traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/lib/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/lib/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@myapp/ts-types' from '/user/username/projects/myproject/lib/app.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module '@myapp/ts-types' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -374,6 +431,9 @@ Directory '/user/username/node_modules' does not exist, skipping all lookups in
 Directory '/user/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name '@myapp/ts-types' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 lib/app.ts:1:23 - error TS2307: Cannot find module '@myapp/ts-types' or its corresponding type declarations.
 
 1 import { myapp } from "@myapp/ts-types";
@@ -502,6 +562,21 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/lib/app.ts"]
   options: {"watch":true,"project":"/user/username/projects/myproject","traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/lib/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/lib/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module '@myapp/ts-types' from '/user/username/projects/myproject/lib/app.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module '@myapp/ts-types' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -517,7 +592,21 @@ File '/user/username/projects/myproject/node_modules/@myapp/ts-types/index.tsx'
 File '/user/username/projects/myproject/node_modules/@myapp/ts-types/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/user/username/projects/myproject/node_modules/@myapp/ts-types/index.d.ts', result '/user/username/projects/myproject/node_modules/@myapp/ts-types/index.d.ts'.
 ======== Module name '@myapp/ts-types' was successfully resolved to '/user/username/projects/myproject/node_modules/@myapp/ts-types/index.d.ts'. ========
+File '/user/username/projects/myproject/node_modules/@myapp/ts-types/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/myproject/node_modules/@myapp/package.json' does not exist.
+File '/user/username/projects/myproject/node_modules/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+File '/user/username/package.json' does not exist according to earlier cached lookups.
+File '/user/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@myapp/ts-types/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@myapp/ts-types/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@myapp/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -527,10 +616,22 @@ Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node
 //// [/user/username/projects/myproject/lib/app.js] file written with same contents
 
 PolledWatches::
+/user/username/projects/myproject/lib/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@myapp/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@myapp/ts-types/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/node_modules:
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/should-compile-correctly-when-resolved-module-goes-missing-and-then-comes-back.js b/tests/baselines/reference/tscWatch/resolutionCache/should-compile-correctly-when-resolved-module-goes-missing-and-then-comes-back.js
index caeed9145417a..55e73b04f82f2 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/should-compile-correctly-when-resolved-module-goes-missing-and-then-comes-back.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/should-compile-correctly-when-resolved-module-goes-missing-and-then-comes-back.js
@@ -37,6 +37,12 @@ define(["require", "exports"], function (require, exports) {
 
 
 
+PolledWatches::
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
@@ -102,6 +108,12 @@ Output::
 
 //// [/users/username/projects/project/foo.js] file written with same contents
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
@@ -171,6 +183,12 @@ Output::
 
 //// [/users/username/projects/project/foo.js] file written with same contents
 
+PolledWatches::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {}
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/with-modules-linked-to-sibling-folder.js b/tests/baselines/reference/tscWatch/resolutionCache/with-modules-linked-to-sibling-folder.js
index 8daa52a11f18f..09a6173fca7ac 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/with-modules-linked-to-sibling-folder.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/with-modules-linked-to-sibling-folder.js
@@ -61,14 +61,22 @@ Object.defineProperty(exports, "__esModule", { value: true });
 
 
 PolledWatches::
+/user/username/projects/myproject/linked-package/dist/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/@scoped: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/works-when-included-file-with-ambient-module-changes.js b/tests/baselines/reference/tscWatch/resolutionCache/works-when-included-file-with-ambient-module-changes.js
index 39e8c56b89316..3f41f567fcf22 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/works-when-included-file-with-ambient-module-changes.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/works-when-included-file-with-ambient-module-changes.js
@@ -54,10 +54,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/works-when-installing-something-in-node_modules-or-@types-when-there-is-no-notification-from-fs-for-index-file.js b/tests/baselines/reference/tscWatch/resolutionCache/works-when-installing-something-in-node_modules-or-@types-when-there-is-no-notification-from-fs-for-index-file.js
index 1dffb5a739856..1d0002e077cff 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/works-when-installing-something-in-node_modules-or-@types-when-there-is-no-notification-from-fs-for-index-file.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/works-when-installing-something-in-node_modules-or-@types-when-there-is-no-notification-from-fs-for-index-file.js
@@ -370,6 +370,11 @@ CreatingProgramWith::
   roots: ["/user/username/projects/myproject/worker.ts"]
   options: {"watch":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types/mocha/index.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types/mocha/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 worker.ts:1:1 - error TS2580: Cannot find name 'process'. Do you need to install type definitions for node? Try `npm i --save-dev @types/node`.
 
 1 process.on("uncaughtException");
@@ -381,8 +386,18 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/
 
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/@types/mocha/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -471,10 +486,20 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node
 
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/@types/mocha/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -590,8 +615,18 @@ Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node
 //// [/user/username/projects/myproject/worker.js] file written with same contents
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/@types/mocha/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/node_modules:
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/works-when-module-resolution-changes-to-ambient-module.js b/tests/baselines/reference/tscWatch/resolutionCache/works-when-module-resolution-changes-to-ambient-module.js
index bfdf2ba29eb91..acda248f6e064 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/works-when-module-resolution-changes-to-ambient-module.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/works-when-module-resolution-changes-to-ambient-module.js
@@ -42,10 +42,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -103,6 +107,10 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/node_modules:
@@ -144,6 +152,10 @@ Output::
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/node_modules:
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/works-when-renaming-node_modules-folder-that-already-contains-@types-folder.js b/tests/baselines/reference/tscWatch/resolutionCache/works-when-renaming-node_modules-folder-that-already-contains-@types-folder.js
index 4ac15f0e76565..8a97ae61d97a9 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/works-when-renaming-node_modules-folder-that-already-contains-@types-folder.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/works-when-renaming-node_modules-folder-that-already-contains-@types-folder.js
@@ -45,10 +45,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -91,10 +95,14 @@ sysLog:: /user/username/projects/myproject/node_modules/@types:: Changing watche
 
 
 PolledWatches::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
@@ -134,8 +142,18 @@ Output::
 //// [/user/username/projects/myproject/a.js] file written with same contents
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types/qqq/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/node_modules:
diff --git a/tests/baselines/reference/tscWatch/resolutionCache/works-when-reusing-program-with-files-from-external-library.js b/tests/baselines/reference/tscWatch/resolutionCache/works-when-reusing-program-with-files-from-external-library.js
index 4979ea4259f80..174c8614216b8 100644
--- a/tests/baselines/reference/tscWatch/resolutionCache/works-when-reusing-program-with-files-from-external-library.js
+++ b/tests/baselines/reference/tscWatch/resolutionCache/works-when-reusing-program-with-files-from-external-library.js
@@ -63,14 +63,24 @@ module11("hello");
 PolledWatches::
 /a/b/projects/myProject/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/myProject/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/projects/myProject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/projects/myProject/package.json: *new*
+  {"pollingInterval":2000}
 /a/b/projects/myProject/src/node_modules: *new*
   {"pollingInterval":500}
 /a/b/projects/myProject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/myProject/src/package.json: *new*
+  {"pollingInterval":2000}
 /a/b/projects/node_modules: *new*
   {"pollingInterval":500}
 /a/b/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/projects/myProject/node_modules/module1/index.js: *new*
diff --git a/tests/baselines/reference/tscWatch/resolveJsonModule/incremental-always-prefers-declaration-file-over-document.js b/tests/baselines/reference/tscWatch/resolveJsonModule/incremental-always-prefers-declaration-file-over-document.js
index a08858ce2d41f..5663d093cb1fb 100644
--- a/tests/baselines/reference/tscWatch/resolveJsonModule/incremental-always-prefers-declaration-file-over-document.js
+++ b/tests/baselines/reference/tscWatch/resolveJsonModule/incremental-always-prefers-declaration-file-over-document.js
@@ -52,7 +52,7 @@ var x = data_json_1.default;
 
 
 //// [/src/project/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../a/lib/lib.d.ts","./data.d.json.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"2718060498-declare var val: string; export default val;","6961905452-import data from \"./data.json\"; let x: string = data;"],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./main.ts","start":17,"length":13,"messageText":"Module './data.json' was resolved to '/src/project/data.d.json.ts', but '--allowArbitraryExtensions' is not set.","category":1,"code":6263}]]]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../a/lib/lib.d.ts","./data.d.json.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"2718060498-declare var val: string; export default val;","impliedFormat":1},{"version":"6961905452-import data from \"./data.json\"; let x: string = data;","impliedFormat":1}],"root":[2,3],"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./main.ts","start":17,"length":13,"messageText":"Module './data.json' was resolved to '/src/project/data.d.json.ts', but '--allowArbitraryExtensions' is not set.","category":1,"code":6263}]]]},"version":"FakeTSVersion"}
 
 //// [/src/project/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -66,19 +66,31 @@ var x = data_json_1.default;
       "../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./data.d.json.ts": {
+        "original": {
+          "version": "2718060498-declare var val: string; export default val;",
+          "impliedFormat": 1
+        },
         "version": "2718060498-declare var val: string; export default val;",
-        "signature": "2718060498-declare var val: string; export default val;"
+        "signature": "2718060498-declare var val: string; export default val;",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "6961905452-import data from \"./data.json\"; let x: string = data;",
+          "impliedFormat": 1
+        },
         "version": "6961905452-import data from \"./data.json\"; let x: string = data;",
-        "signature": "6961905452-import data from \"./data.json\"; let x: string = data;"
+        "signature": "6961905452-import data from \"./data.json\"; let x: string = data;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -111,7 +123,7 @@ var x = data_json_1.default;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 918
+  "size": 996
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-when-solution-is-already-built.js
index 474a501c0432f..30c78e05f3e79 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-when-solution-is-already-built.js
@@ -85,7 +85,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,27 +99,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -146,7 +152,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -163,7 +169,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,27 +190,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -233,7 +253,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1009
+  "size": 1105
 }
 
 
@@ -248,7 +268,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -269,27 +289,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -318,23 +352,35 @@ Output::
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 977
+  "size": 1073
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks-when-solution-is-already-built.js
index 902ceca28d459..1fba8514e86c9 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks-when-solution-is-already-built.js
@@ -87,7 +87,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,27 +101,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,7 +154,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -165,7 +171,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/index.d.ts","../../node_modules/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/index.d.ts","../../node_modules/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -186,27 +192,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -235,7 +255,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1041
+  "size": 1137
 }
 
 
@@ -250,7 +270,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -271,27 +291,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -320,23 +354,35 @@ Output::
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 977
+  "size": 1073
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks.js
index 84bc9cc19e50e..649c4ec5a5341 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-preserveSymlinks.js
@@ -88,7 +88,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -109,27 +109,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -158,23 +172,35 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 977
+  "size": 1073
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-when-solution-is-already-built.js
index 0e0f6c91aa0be..c814a525337ad 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-when-solution-is-already-built.js
@@ -85,7 +85,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,27 +99,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -146,7 +152,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -163,7 +169,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,27 +190,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -233,7 +253,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1023
+  "size": 1119
 }
 
 
@@ -248,7 +268,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -269,27 +289,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -318,23 +352,35 @@ Output::
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 991
+  "size": 1087
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js
index 7e949307c5aa0..1a27e8f7a5c41 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js
@@ -87,7 +87,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,27 +101,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -148,7 +154,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -165,7 +171,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/index.d.ts","../../node_modules/@issue/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/index.d.ts","../../node_modules/@issue/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -186,27 +192,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -235,7 +255,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1069
+  "size": 1165
 }
 
 
@@ -250,7 +270,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -271,27 +291,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -320,23 +354,35 @@ Output::
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 991
+  "size": 1087
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks.js
index cb5077e82f5e2..d2f34307f51c4 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package-with-preserveSymlinks.js
@@ -88,7 +88,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -109,27 +109,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -158,23 +172,35 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 991
+  "size": 1087
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package.js
index 54681c6b6e87f..bc3af8ec3ab82 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field-with-scoped-package.js
@@ -86,7 +86,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,27 +107,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -156,23 +170,35 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 991
+  "size": 1087
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field.js
index ee648d55d29e9..ac07723fd8f85 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-packageJson-has-types-field.js
@@ -86,7 +86,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/index.ts","../b/src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,27 +107,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/index.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -156,23 +170,35 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 977
+  "size": 1073
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-when-solution-is-already-built.js
index 32e44d97d6d53..e6bc7448e2560 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-when-solution-is-already-built.js
@@ -82,7 +82,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -96,27 +96,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -143,7 +149,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -160,7 +166,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,27 +187,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -230,7 +250,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1118
 }
 
 
@@ -245,7 +265,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -266,27 +286,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -315,23 +349,37 @@ Output::
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 990
+  "size": 1086
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks-when-solution-is-already-built.js
index ffd6ea3d63d85..a9dbd88b2009a 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks-when-solution-is-already-built.js
@@ -84,7 +84,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,27 +98,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -145,7 +151,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -162,7 +168,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/foo.d.ts","../../node_modules/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/foo.d.ts","../../node_modules/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -183,27 +189,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -232,7 +252,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1054
+  "size": 1150
 }
 
 
@@ -247,7 +267,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -268,27 +288,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -317,23 +351,37 @@ Output::
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 990
+  "size": 1086
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks.js
index 32705942468f0..4624095f55300 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-preserveSymlinks.js
@@ -85,7 +85,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,27 +106,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -155,23 +169,37 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 990
+  "size": 1086
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-when-solution-is-already-built.js
index fbc0eee436bf6..4ec4643a49eef 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-when-solution-is-already-built.js
@@ -82,7 +82,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -96,27 +96,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -143,7 +149,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -160,7 +166,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,27 +187,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -230,7 +250,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1037
+  "size": 1133
 }
 
 
@@ -245,7 +265,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -266,27 +286,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -315,23 +349,37 @@ Output::
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1005
+  "size": 1101
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js
index 840cdc289d349..b8a078f363022 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks-when-solution-is-already-built.js
@@ -84,7 +84,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,27 +98,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -145,7 +151,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -162,7 +168,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/foo.d.ts","../../node_modules/@issue/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/foo.d.ts","../../node_modules/@issue/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -183,27 +189,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -232,7 +252,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1083
+  "size": 1179
 }
 
 
@@ -247,7 +267,7 @@ Output::
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js] file written with same contents
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -268,27 +288,41 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -317,23 +351,37 @@ Output::
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1005
+  "size": 1101
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks.js
index 422fa68ff383a..fc8b35de86c98 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package-with-preserveSymlinks.js
@@ -85,7 +85,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,27 +106,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -155,23 +169,37 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1005
+  "size": 1101
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package.js
index c18776285d746..77f21c9288b21 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder-with-scoped-package.js
@@ -83,7 +83,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,27 +104,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -153,23 +167,37 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1005
+  "size": 1101
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder.js
index 2d8780ab266d6..b325689a4350b 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/when-referencing-file-from-subFolder.js
@@ -83,7 +83,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"4646078106-export function foo() { }","1045484683-export function bar() { }",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/src/foo.ts","../b/src/bar/foo.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","impliedFormat":1},{"version":"1045484683-export function bar() { }","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,27 +104,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/src/foo.ts": {
+        "original": {
+          "version": "4646078106-export function foo() { }",
+          "impliedFormat": 1
+        },
         "version": "4646078106-export function foo() { }",
-        "signature": "4646078106-export function foo() { }"
+        "signature": "4646078106-export function foo() { }",
+        "impliedFormat": "commonjs"
       },
       "../b/src/bar/foo.ts": {
+        "original": {
+          "version": "1045484683-export function bar() { }",
+          "impliedFormat": 1
+        },
         "version": "1045484683-export function bar() { }",
-        "signature": "1045484683-export function bar() { }"
+        "signature": "1045484683-export function bar() { }",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -153,23 +167,37 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 990
+  "size": 1086
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project-when-solution-is-already-built.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project-when-solution-is-already-built.js
index a408fa0525e87..f163771b4602a 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project-when-solution-is-already-built.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project-when-solution-is-already-built.js
@@ -160,7 +160,7 @@ export declare function lastElementOf<T>(arr: T[]): T | undefined;
 
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"}],"root":[2],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./utilities.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../core/utilities.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../core","strict":true,"target":1},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./utilities.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/core/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,19 +173,23 @@ export declare function lastElementOf<T>(arr: T[]): T | undefined;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
         "original": {
           "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
         },
         "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +219,7 @@ export declare function lastElementOf<T>(arr: T[]): T | undefined;
     "latestChangedDtsFile": "./utilities.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1324
+  "size": 1360
 }
 
 //// [/user/username/projects/demo/lib/animals/animal.js]
@@ -271,7 +275,7 @@ export declare function createDog(): Dog;
 
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../core/utilities.d.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"},"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../core/utilities.d.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -297,35 +301,51 @@ export declare function createDog(): Dog;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
         "original": {
           "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
         },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../core/utilities.d.ts": {
+        "original": {
+          "version": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
+        },
         "version": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
         "original": {
           "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
         },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -375,7 +395,7 @@ export declare function createDog(): Dog;
     "latestChangedDtsFile": "./dog.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2221
+  "size": 2335
 }
 
 
@@ -390,7 +410,7 @@ Output::
 
 //// [/user/username/projects/demo/lib/animals/dog.js] file written with same contents
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../../core/utilities.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../../core/utilities.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","signature":"-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -416,39 +436,52 @@ Output::
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
         "original": {
           "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
         },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
         "original": {
           "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+          "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+          "impliedFormat": 1
         },
         "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n"
+        "signature": "-11345568166-export declare function makeRandomName(): string;\nexport declare function lastElementOf<T>(arr: T[]): T | undefined;\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
         "original": {
           "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
         },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -498,17 +531,25 @@ Output::
     "latestChangedDtsFile": "./dog.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2469
+  "size": 2571
 }
 
 
 PolledWatches::
 /user/username/projects/demo/animals/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/demo/animals/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/demo/core/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/demo/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/demo/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project.js b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project.js
index f428799629070..d71fdfd46a7b0 100644
--- a/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project.js
+++ b/tests/baselines/reference/tscWatch/sourceOfProjectReferenceRedirect/with-simple-project.js
@@ -202,7 +202,7 @@ export declare function createDog(): Dog;
 
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../../core/utilities.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"},"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../animals/animal.ts","../../animals/index.ts","../../core/utilities.ts","../../animals/dog.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n","impliedFormat":1},{"version":"-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","signature":"1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n","impliedFormat":1},{"version":"-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n","impliedFormat":1},{"version":"-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n","signature":"6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n","impliedFormat":1}],"root":[2,3,5],"options":{"composite":true,"declaration":true,"module":1,"noFallthroughCasesInSwitch":true,"noImplicitReturns":true,"noUnusedLocals":true,"noUnusedParameters":true,"outDir":"./","rootDir":"../../animals","strict":true,"target":1},"fileIdsList":[[3,4],[2,5]],"referencedMap":[[5,1],[3,2]],"semanticDiagnosticsPerFile":[1,2,5,3,4],"latestChangedDtsFile":"./dog.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/demo/lib/animals/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -228,35 +228,51 @@ export declare function createDog(): Dog;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../animals/animal.ts": {
+        "original": {
+          "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
-        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n"
+        "signature": "-9289341318-export type Size = \"small\" | \"medium\" | \"large\";\nexport default interface Animal {\n    size: Size;\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/index.ts": {
         "original": {
           "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+          "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+          "impliedFormat": 1
         },
         "version": "-7220553464-import Animal from './animal';\n\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
-        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n"
+        "signature": "1096904574-import Animal from './animal';\nexport default Animal;\nimport { createDog, Dog } from './dog';\nexport { createDog, Dog };\n",
+        "impliedFormat": "commonjs"
       },
       "../../core/utilities.ts": {
+        "original": {
+          "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
+          "impliedFormat": 1
+        },
         "version": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
-        "signature": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n"
+        "signature": "-6723567162-export function makeRandomName() {\n    return \"Bob!?! \";\n}\n\nexport function lastElementOf<T>(arr: T[]): T | undefined {\n    if (arr.length === 0) return undefined;\n    return arr[arr.length - 1];\n}\n",
+        "impliedFormat": "commonjs"
       },
       "../../animals/dog.ts": {
         "original": {
           "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+          "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+          "impliedFormat": 1
         },
         "version": "-18870194049-import Animal from '.';\nimport { makeRandomName } from '../core/utilities';\n\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\n\nexport function createDog(): Dog {\n    return ({\n        size: \"medium\",\n        woof: function(this: Dog) {\n            console.log(`${ this.name } says \"Woof\"!`);\n        },\n        name: makeRandomName()\n    });\n}\n",
-        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n"
+        "signature": "6032048049-import Animal from '.';\nexport interface Dog extends Animal {\n    woof(): void;\n    name: string;\n}\nexport declare function createDog(): Dog;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -306,17 +322,25 @@ export declare function createDog(): Dog;
     "latestChangedDtsFile": "./dog.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 2310
+  "size": 2424
 }
 
 
 PolledWatches::
 /user/username/projects/demo/animals/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/demo/animals/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/demo/core/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/demo/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/demo/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-Linux.js b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-Linux.js
index 441c05eadea79..d73f89465bdc0 100644
--- a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-Linux.js
+++ b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-Linux.js
@@ -92,6 +92,8 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/index.ts 250 undefined Source file
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -162,6 +164,9 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 250 undefined Source file
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
@@ -176,6 +181,8 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/n
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Type roots
@@ -220,6 +227,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -238,6 +247,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist: *new*
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json: *new*
+  {"inode":12}
 /home/src/projects/project/packages/package2/src: *new*
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts: *new*
@@ -293,6 +304,14 @@ export type BarType = "bar";
 
 
 
+Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+
+
 Timeout callback:: count: 1
 2: timerToUpdateChildWatches *new*
 
@@ -325,6 +344,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -345,6 +366,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -378,6 +401,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -400,7 +430,13 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -419,10 +455,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -449,6 +489,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -519,10 +561,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package1/dist/index.d.ts: *new*
   {"pollingInterval":250}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -541,6 +587,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -570,7 +618,14 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -639,8 +694,12 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 packages/package2/src/index.ts:1:34 - error TS2307: Cannot find module 'package1' or its corresponding type declarations.
 
 1 import { FooType, BarType } from "package1"
@@ -674,12 +733,16 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package1/dist:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package1/dist/index.d.ts:
   {"pollingInterval":250}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -698,6 +761,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -768,6 +833,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -837,6 +909,9 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 packages/package2/src/index.ts:1:34 - error TS2307: Cannot find module 'package1' or its corresponding type declarations.
 
 1 import { FooType, BarType } from "package1"
@@ -892,6 +967,14 @@ export type BarType = "bar";
 
 
 
+Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+
+
 Timeout callback:: count: 1
 15: timerToUpdateChildWatches *new*
 
@@ -924,6 +1007,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -944,6 +1029,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -977,6 +1064,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -999,7 +1093,13 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -1018,10 +1118,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -1048,6 +1152,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":21}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
diff --git a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js
index af6f3711a6d30..ac9a56779bfa8 100644
--- a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js
+++ b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js
@@ -94,6 +94,11 @@ export type BarType = "bar";
 
 /a/lib/tsc.js --w -p packages/package2 --extendedDiagnostics
 Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Starting compilation in watch mode...
 
 Current directory: /home/src/projects/project CaseSensitiveFileNames: false
@@ -102,6 +107,8 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/index.ts 250 undefined Source file
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -125,7 +132,12 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 250 undefined Source file
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
@@ -138,6 +150,9 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/n
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Type roots
@@ -171,10 +186,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -197,6 +216,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist: *new*
   {"inode":24}
+/home/src/projects/project/packages/package2/package.json: *new*
+  {"inode":12}
 /home/src/projects/project/packages/package2/src: *new*
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts: *new*
@@ -275,10 +296,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package1/dist/index.d.ts: *new*
   {"pollingInterval":250}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -297,6 +322,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":24}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -326,7 +353,14 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -395,8 +429,12 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 packages/package2/src/index.ts:1:34 - error TS2307: Cannot find module 'package1' or its corresponding type declarations.
 
 1 import { FooType, BarType } from "package1"
@@ -433,12 +471,16 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package1/dist:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package1/dist/index.d.ts:
   {"pollingInterval":250}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -457,6 +499,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":24}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -527,6 +571,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -596,6 +647,9 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 packages/package2/src/index.ts:1:34 - error TS2307: Cannot find module 'package1' or its corresponding type declarations.
 
 1 import { FooType, BarType } from "package1"
@@ -651,6 +705,14 @@ export type BarType = "bar";
 
 
 
+Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+
+
 Timeout callback:: count: 1
 10: timerToUpdateChildWatches *new*
 
@@ -683,6 +745,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -703,6 +767,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":24}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
@@ -736,6 +802,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -758,7 +831,13 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -777,10 +856,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -807,6 +890,8 @@ FsWatches::
   {"inode":11}
 /home/src/projects/project/packages/package2/dist:
   {"inode":24}
+/home/src/projects/project/packages/package2/package.json:
+  {"inode":12}
 /home/src/projects/project/packages/package2/src:
   {"inode":14}
 /home/src/projects/project/packages/package2/src/index.ts:
diff --git a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built.js b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built.js
index 42dc910e71c96..27ae0d28ac440 100644
--- a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built.js
+++ b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked-package1-built.js
@@ -94,6 +94,11 @@ export type BarType = "bar";
 
 /a/lib/tsc.js --w -p packages/package2 --extendedDiagnostics
 Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Starting compilation in watch mode...
 
 Current directory: /home/src/projects/project CaseSensitiveFileNames: false
@@ -102,6 +107,8 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/index.ts 250 undefined Source file
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -125,7 +132,12 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 250 undefined Source file
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
@@ -138,6 +150,9 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/n
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Type roots
@@ -171,10 +186,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -183,6 +202,8 @@ FsWatches::
   {}
 /home/src/projects/project/packages/package1/package.json: *new*
   {}
+/home/src/projects/project/packages/package2/package.json: *new*
+  {}
 /home/src/projects/project/packages/package2/src/index.ts: *new*
   {}
 /home/src/projects/project/packages/package2/tsconfig.json: *new*
@@ -279,7 +300,14 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -349,8 +377,12 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 packages/package2/src/index.ts:1:34 - error TS2307: Cannot find module 'package1' or its corresponding type declarations.
 
 1 import { FooType, BarType } from "package1"
@@ -378,12 +410,20 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
   {}
 /home/src/projects/project/packages/package1/package.json:
   {}
+/home/src/projects/project/packages/package2/package.json:
+  {}
 /home/src/projects/project/packages/package2/src/index.ts:
   {}
 /home/src/projects/project/packages/package2/tsconfig.json:
@@ -461,6 +501,11 @@ export type BarType = "bar";
 
 
 Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 DirectoryWatcher:: Triggered with /home/src/projects/project/node_modules/package1/dist :: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 Scheduling invalidateFailedLookup
 Elapsed:: *ms DirectoryWatcher:: Triggered with /home/src/projects/project/node_modules/package1/dist :: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
@@ -498,6 +543,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -520,7 +572,13 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -539,10 +597,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -555,6 +617,8 @@ FsWatches::
   {}
 /home/src/projects/project/packages/package1/package.json:
   {}
+/home/src/projects/project/packages/package2/package.json:
+  {}
 /home/src/projects/project/packages/package2/src/index.ts:
   {}
 /home/src/projects/project/packages/package2/tsconfig.json:
diff --git a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked.js b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked.js
index 056fd3d7e9efd..e729d6fa74470 100644
--- a/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked.js
+++ b/tests/baselines/reference/tscWatch/symlinks/monorepo-style-sibling-packages-symlinked.js
@@ -92,6 +92,8 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/index.ts 250 undefined Source file
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -162,6 +164,9 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 250 undefined Source file
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Failed Lookup Locations
@@ -176,6 +181,8 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/n
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Type roots
@@ -220,12 +227,16 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
   {}
 /home/src/projects/project/packages/package1/package.json: *new*
   {}
+/home/src/projects/project/packages/package2/package.json: *new*
+  {}
 /home/src/projects/project/packages/package2/src/index.ts: *new*
   {}
 /home/src/projects/project/packages/package2/tsconfig.json: *new*
@@ -290,6 +301,11 @@ export type BarType = "bar";
 
 
 Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 DirectoryWatcher:: Triggered with /home/src/projects/project/node_modules/package1/dist :: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 Scheduling invalidateFailedLookup
 Elapsed:: *ms DirectoryWatcher:: Triggered with /home/src/projects/project/node_modules/package1/dist :: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
@@ -327,6 +343,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -349,7 +372,13 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -368,10 +397,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -384,6 +417,8 @@ FsWatches::
   {}
 /home/src/projects/project/packages/package1/package.json:
   {}
+/home/src/projects/project/packages/package2/package.json:
+  {}
 /home/src/projects/project/packages/package2/src/index.ts:
   {}
 /home/src/projects/project/packages/package2/tsconfig.json:
@@ -476,7 +511,14 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -546,8 +588,12 @@ Directory '/home/src/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'package1' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 packages/package2/src/index.ts:1:34 - error TS2307: Cannot find module 'package1' or its corresponding type declarations.
 
 1 import { FooType, BarType } from "package1"
@@ -575,12 +621,20 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
   {}
 /home/src/projects/project/packages/package1/package.json:
   {}
+/home/src/projects/project/packages/package2/package.json:
+  {}
 /home/src/projects/project/packages/package2/src/index.ts:
   {}
 /home/src/projects/project/packages/package2/tsconfig.json:
@@ -658,6 +712,11 @@ export type BarType = "bar";
 
 
 Output::
+File '/home/src/projects/project/packages/package1/src/package.json' does not exist.
+Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 DirectoryWatcher:: Triggered with /home/src/projects/project/node_modules/package1/dist :: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
 Scheduling invalidateFailedLookup
 Elapsed:: *ms DirectoryWatcher:: Triggered with /home/src/projects/project/node_modules/package1/dist :: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Failed Lookup Locations
@@ -695,6 +754,13 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/src/projects/project/packages/package2/src/index.ts"]
   options: {"target":3,"module":1,"rootDir":"/home/src/projects/project/packages/package2/src","declaration":true,"outDir":"/home/src/projects/project/packages/package2/dist","esModuleInterop":true,"forceConsistentCasingInFileNames":true,"strict":true,"skipLibCheck":true,"traceResolution":true,"watch":true,"project":"/home/src/projects/project/packages/package2","extendedDiagnostics":true,"configFilePath":"/home/src/projects/project/packages/package2/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -717,7 +783,13 @@ File '/home/src/projects/project/node_modules/package1/dist/index.d.ts' exists -
 'package.json' does not have a 'peerDependencies' field.
 Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -736,10 +808,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -752,6 +828,8 @@ FsWatches::
   {}
 /home/src/projects/project/packages/package1/package.json:
   {}
+/home/src/projects/project/packages/package2/package.json:
+  {}
 /home/src/projects/project/packages/package2/src/index.ts:
   {}
 /home/src/projects/project/packages/package2/tsconfig.json:
diff --git a/tests/baselines/reference/tscWatch/watchApi/host-implements-does-not-implement-hasInvalidatedResolutions.js b/tests/baselines/reference/tscWatch/watchApi/host-implements-does-not-implement-hasInvalidatedResolutions.js
index 955207846da42..2d72d1cbbbf4a 100644
--- a/tests/baselines/reference/tscWatch/watchApi/host-implements-does-not-implement-hasInvalidatedResolutions.js
+++ b/tests/baselines/reference/tscWatch/watchApi/host-implements-does-not-implement-hasInvalidatedResolutions.js
@@ -42,6 +42,11 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 undefined Source file
 ======== Resolving module './other' from '/user/username/projects/myproject/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -50,8 +55,18 @@ File '/user/username/projects/myproject/other.ts' does not exist.
 File '/user/username/projects/myproject/other.tsx' does not exist.
 File '/user/username/projects/myproject/other.d.ts' exists - use it as a name resolution result.
 ======== Module name './other' was successfully resolved to '/user/username/projects/myproject/other.d.ts'. ========
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/other.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -69,8 +84,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -133,6 +152,24 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module './other' from '/user/username/projects/myproject/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/other', target file types: TypeScript, Declaration.
@@ -140,6 +177,14 @@ File '/user/username/projects/myproject/other.ts' does not exist.
 File '/user/username/projects/myproject/other.tsx' does not exist.
 File '/user/username/projects/myproject/other.d.ts' exists - use it as a name resolution result.
 ======== Module name './other' was successfully resolved to '/user/username/projects/myproject/other.d.ts'. ========
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -193,6 +238,24 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module './other' from '/user/username/projects/myproject/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/other', target file types: TypeScript, Declaration.
@@ -200,6 +263,14 @@ File '/user/username/projects/myproject/other.ts' does not exist.
 File '/user/username/projects/myproject/other.tsx' does not exist.
 File '/user/username/projects/myproject/other.d.ts' exists - use it as a name resolution result.
 ======== Module name './other' was successfully resolved to '/user/username/projects/myproject/other.d.ts'. ========
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -259,12 +330,38 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module './other' from '/user/username/projects/myproject/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/other', target file types: TypeScript, Declaration.
 File '/user/username/projects/myproject/other.ts' exists - use it as a name resolution result.
 ======== Module name './other' was successfully resolved to '/user/username/projects/myproject/other.ts'. ========
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/other.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -281,8 +378,12 @@ function foo() { }
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchApi/host-implements-hasInvalidatedResolutions.js b/tests/baselines/reference/tscWatch/watchApi/host-implements-hasInvalidatedResolutions.js
index b350a4cbbdf35..0ea024177a894 100644
--- a/tests/baselines/reference/tscWatch/watchApi/host-implements-hasInvalidatedResolutions.js
+++ b/tests/baselines/reference/tscWatch/watchApi/host-implements-hasInvalidatedResolutions.js
@@ -42,6 +42,11 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 undefined Source file
 ======== Resolving module './other' from '/user/username/projects/myproject/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -50,8 +55,18 @@ File '/user/username/projects/myproject/other.ts' does not exist.
 File '/user/username/projects/myproject/other.tsx' does not exist.
 File '/user/username/projects/myproject/other.d.ts' exists - use it as a name resolution result.
 ======== Module name './other' was successfully resolved to '/user/username/projects/myproject/other.d.ts'. ========
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/other.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -69,8 +84,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -161,6 +180,19 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -220,12 +252,38 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/user/username/projects/myproject/main.ts"]
   options: {"traceResolution":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 ======== Resolving module './other' from '/user/username/projects/myproject/main.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module as file / folder, candidate module location '/user/username/projects/myproject/other', target file types: TypeScript, Declaration.
 File '/user/username/projects/myproject/other.ts' exists - use it as a name resolution result.
 ======== Module name './other' was successfully resolved to '/user/username/projects/myproject/other.ts'. ========
+File '/user/username/projects/myproject/package.json' does not exist.
+File '/user/username/projects/package.json' does not exist.
+File '/user/username/package.json' does not exist.
+File '/user/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/other.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist.
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
 
 
@@ -242,8 +300,12 @@ function foo() { }
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-emit-builder.js b/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-emit-builder.js
index 79f40bf35529b..b90329a522a14 100644
--- a/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-emit-builder.js
+++ b/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-emit-builder.js
@@ -37,7 +37,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -51,19 +51,31 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -101,15 +113,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 746
+  "size": 824
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -162,7 +178,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,27 +192,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +243,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 866
+  "size": 920
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -250,14 +272,22 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -318,8 +348,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -345,7 +379,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -359,27 +393,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-14918944530-export const x = 10;\n// SomeComment",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-14918944530-export const x = 10;\n// SomeComment",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -410,15 +450,19 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 913
+  "size": 967
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -467,7 +511,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -481,27 +525,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-14918944530-export const x = 10;\n// SomeComment",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-14918944530-export const x = 10;\n// SomeComment",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -526,7 +576,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 882
+  "size": 936
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -541,14 +591,22 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -610,8 +668,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -637,7 +699,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-16105752451-export const x = 10;\n// SomeComment\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16105752451-export const x = 10;\n// SomeComment\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -651,27 +713,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-16105752451-export const x = 10;\n// SomeComment\n// SomeComment",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16105752451-export const x = 10;\n// SomeComment\n// SomeComment",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -696,7 +764,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 898
+  "size": 952
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -712,8 +780,12 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-semantic-builder.js b/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-semantic-builder.js
index 97b1b01dbf903..4eddc428936ef 100644
--- a/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-semantic-builder.js
+++ b/tests/baselines/reference/tscWatch/watchApi/noEmit-with-composite-with-semantic-builder.js
@@ -37,7 +37,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -51,19 +51,31 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -101,15 +113,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 746
+  "size": 824
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -169,7 +185,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -183,27 +199,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -228,7 +250,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 866
+  "size": 920
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -257,14 +279,22 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -332,8 +362,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -359,7 +393,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[2],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -373,27 +407,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-14918944530-export const x = 10;\n// SomeComment",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-14918944530-export const x = 10;\n// SomeComment",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -424,15 +464,19 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 913
+  "size": 967
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -488,7 +532,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14918944530-export const x = 10;\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -502,27 +546,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-14918944530-export const x = 10;\n// SomeComment",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-14918944530-export const x = 10;\n// SomeComment",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -547,7 +597,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 882
+  "size": 936
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -562,14 +612,22 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -638,8 +696,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -665,7 +727,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-16105752451-export const x = 10;\n// SomeComment\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-16105752451-export const x = 10;\n// SomeComment\n// SomeComment","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -679,27 +741,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-16105752451-export const x = 10;\n// SomeComment\n// SomeComment",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-16105752451-export const x = 10;\n// SomeComment\n// SomeComment",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -724,7 +792,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 898
+  "size": 952
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -741,8 +809,12 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-emit-builder.js b/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-emit-builder.js
index 9b87ec06cc643..f271088735cc2 100644
--- a/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-emit-builder.js
+++ b/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-emit-builder.js
@@ -43,7 +43,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8089124208-export const x: string = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8089124208-export const x: string = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -57,19 +57,31 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-8089124208-export const x: string = 10;",
+          "impliedFormat": 1
+        },
         "version": "-8089124208-export const x: string = 10;",
-        "signature": "-8089124208-export const x: string = 10;"
+        "signature": "-8089124208-export const x: string = 10;",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -120,15 +132,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 912
+  "size": 990
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -182,8 +198,12 @@ export const x: string = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -214,7 +234,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-5691975201-export const x: string = 10;\n// SomeComment","signature":"-10161843860-export declare const x: string;\n"},"-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5691975201-export const x: string = 10;\n// SomeComment","signature":"-10161843860-export declare const x: string;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -228,23 +248,32 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-5691975201-export const x: string = 10;\n// SomeComment",
-          "signature": "-10161843860-export declare const x: string;\n"
+          "signature": "-10161843860-export declare const x: string;\n",
+          "impliedFormat": 1
         },
         "version": "-5691975201-export const x: string = 10;\n// SomeComment",
-        "signature": "-10161843860-export declare const x: string;\n"
+        "signature": "-10161843860-export declare const x: string;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -295,15 +324,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1001
+  "size": 1067
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -352,8 +385,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -379,7 +416,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -393,27 +430,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -439,7 +482,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 887
+  "size": 941
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -468,8 +511,12 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-semantic-builder.js b/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-semantic-builder.js
index d752daa95949f..8d132b3f85a55 100644
--- a/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-semantic-builder.js
+++ b/tests/baselines/reference/tscWatch/watchApi/noEmitOnError-with-composite-with-semantic-builder.js
@@ -43,7 +43,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8089124208-export const x: string = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8089124208-export const x: string = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -57,19 +57,31 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-8089124208-export const x: string = 10;",
+          "impliedFormat": 1
+        },
         "version": "-8089124208-export const x: string = 10;",
-        "signature": "-8089124208-export const x: string = 10;"
+        "signature": "-8089124208-export const x: string = 10;",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -120,15 +132,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 912
+  "size": 990
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -189,8 +205,12 @@ export const x: string = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -221,7 +241,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-5691975201-export const x: string = 10;\n// SomeComment","signature":"-10161843860-export declare const x: string;\n"},"-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5691975201-export const x: string = 10;\n// SomeComment","signature":"-10161843860-export declare const x: string;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -235,23 +255,32 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-5691975201-export const x: string = 10;\n// SomeComment",
-          "signature": "-10161843860-export declare const x: string;\n"
+          "signature": "-10161843860-export declare const x: string;\n",
+          "impliedFormat": 1
         },
         "version": "-5691975201-export const x: string = 10;\n// SomeComment",
-        "signature": "-10161843860-export declare const x: string;\n"
+        "signature": "-10161843860-export declare const x: string;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -302,15 +331,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1001
+  "size": 1067
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -366,8 +399,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -393,7 +430,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -407,27 +444,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -453,7 +496,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 887
+  "size": 941
 }
 
 //// [/user/username/projects/myproject/main.js]
@@ -482,8 +525,12 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/semantic-builder-emitOnlyDts.js b/tests/baselines/reference/tscWatch/watchApi/semantic-builder-emitOnlyDts.js
index 52fdf6f1400ba..a76716b953272 100644
--- a/tests/baselines/reference/tscWatch/watchApi/semantic-builder-emitOnlyDts.js
+++ b/tests/baselines/reference/tscWatch/watchApi/semantic-builder-emitOnlyDts.js
@@ -43,7 +43,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-8089124208-export const x: string = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8089124208-export const x: string = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,[2,[{"file":"./main.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type 'number' is not assignable to type 'string'."}]],3],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -57,19 +57,31 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
+        "original": {
+          "version": "-8089124208-export const x: string = 10;",
+          "impliedFormat": 1
+        },
         "version": "-8089124208-export const x: string = 10;",
-        "signature": "-8089124208-export const x: string = 10;"
+        "signature": "-8089124208-export const x: string = 10;",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-13729955264-export const y = 10;"
+        "signature": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -120,15 +132,19 @@ Output::
     ]
   },
   "version": "FakeTSVersion",
-  "size": 912
+  "size": 990
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -181,8 +197,12 @@ export const x = 10;
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -207,7 +227,7 @@ Output::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[[2,1],[3,1]],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./main.ts","./other.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[[2,1],[3,1]],"latestChangedDtsFile":"./other.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -221,27 +241,33 @@ Output::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./other.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -281,7 +307,7 @@ Output::
     "latestChangedDtsFile": "./other.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 928
+  "size": 982
 }
 
 //// [/user/username/projects/myproject/main.d.ts]
@@ -296,8 +322,12 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/verifies-that-noEmit-is-handled-on-createSemanticDiagnosticsBuilderProgram.js b/tests/baselines/reference/tscWatch/watchApi/verifies-that-noEmit-is-handled-on-createSemanticDiagnosticsBuilderProgram.js
index 8e19dff73f4be..46ca0a85d6e96 100644
--- a/tests/baselines/reference/tscWatch/watchApi/verifies-that-noEmit-is-handled-on-createSemanticDiagnosticsBuilderProgram.js
+++ b/tests/baselines/reference/tscWatch/watchApi/verifies-that-noEmit-is-handled-on-createSemanticDiagnosticsBuilderProgram.js
@@ -36,8 +36,12 @@ Output::
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/verify-that-module-resolution-with-json-extension-works-when-returned-without-extension.js b/tests/baselines/reference/tscWatch/watchApi/verify-that-module-resolution-with-json-extension-works-when-returned-without-extension.js
index 86f0b4bee721c..763bcd5de4159 100644
--- a/tests/baselines/reference/tscWatch/watchApi/verify-that-module-resolution-with-json-extension-works-when-returned-without-extension.js
+++ b/tests/baselines/reference/tscWatch/watchApi/verify-that-module-resolution-with-json-extension-works-when-returned-without-extension.js
@@ -61,8 +61,12 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles-with-outFile.js b/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles-with-outFile.js
index c260a4c70f726..a22599265310c 100644
--- a/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles-with-outFile.js
+++ b/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles-with-outFile.js
@@ -47,6 +47,8 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -64,8 +66,12 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -140,7 +146,7 @@ declare module "b" {
 
 
 //// [/user/username/projects/myproject/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-10726455937-export const x = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-4206946595-declare module \"a\" {\n    export const x = 10;\n}\ndeclare module \"b\" {\n    export const y = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts","pendingEmit":1},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-4206946595-declare module \"a\" {\n    export const x = 10;\n}\ndeclare module \"b\" {\n    export const y = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts","pendingEmit":1},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -151,9 +157,30 @@ declare module "b" {
       "./b.ts"
     ],
     "fileInfos": {
-      "../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./a.ts": "-10726455937-export const x = 10;",
-      "./b.ts": "-13729955264-export const y = 10;"
+      "../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./a.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./b.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -179,7 +206,7 @@ declare module "b" {
     ]
   },
   "version": "FakeTSVersion",
-  "size": 838
+  "size": 928
 }
 
 
@@ -223,7 +250,7 @@ Change:: Emit all files
 
 Input::
 //// [/user/username/projects/myproject/outFile.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-10726455937-export const x = 10;","-13729955264-export const y = 10;"],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-4206946595-declare module \"a\" {\n    export const x = 10;\n}\ndeclare module \"b\" {\n    export const y = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-13729955264-export const y = 10;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true,"outFile":"./outFile.js"},"outSignature":"-4206946595-declare module \"a\" {\n    export const x = 10;\n}\ndeclare module \"b\" {\n    export const y = 10;\n}\n","latestChangedDtsFile":"./outFile.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/outFile.tsbuildinfo.readable.baseline.txt]
 {
@@ -234,9 +261,30 @@ Input::
       "./b.ts"
     ],
     "fileInfos": {
-      "../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./a.ts": "-10726455937-export const x = 10;",
-      "./b.ts": "-13729955264-export const y = 10;"
+      "../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./a.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
+      },
+      "./b.ts": {
+        "original": {
+          "version": "-13729955264-export const y = 10;",
+          "impliedFormat": 1
+        },
+        "version": "-13729955264-export const y = 10;",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -258,7 +306,7 @@ Input::
     "latestChangedDtsFile": "./outFile.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 822
+  "size": 912
 }
 
 //// [/user/username/projects/myproject/outFile.js]
diff --git a/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles.js b/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles.js
index 33f346a090d1d..14e34a4cf3d8c 100644
--- a/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles.js
+++ b/tests/baselines/reference/tscWatch/watchApi/when-emitting-with-emitOnlyDtsFiles.js
@@ -46,6 +46,8 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -60,7 +62,7 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-10726455937-export const x = 10;","-11268290852-export const y: 10 = 20;"],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./b.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type '20' is not assignable to type '10'."}]]],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","impliedFormat":1},{"version":"-11268290852-export const y: 10 = 20;","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,[3,[{"file":"./b.ts","start":13,"length":1,"code":2322,"category":1,"messageText":"Type '20' is not assignable to type '10'."}]]],"affectedFilesPendingEmit":[2,3],"emitSignatures":[2,3]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -74,19 +76,31 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
+        "original": {
+          "version": "-10726455937-export const x = 10;",
+          "impliedFormat": 1
+        },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-10726455937-export const x = 10;"
+        "signature": "-10726455937-export const x = 10;",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
+        "original": {
+          "version": "-11268290852-export const y: 10 = 20;",
+          "impliedFormat": 1
+        },
         "version": "-11268290852-export const y: 10 = 20;",
-        "signature": "-11268290852-export const y: 10 = 20;"
+        "signature": "-11268290852-export const y: 10 = 20;",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,15 +152,19 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node
     ]
   },
   "version": "FakeTSVersion",
-  "size": 902
+  "size": 980
 }
 
 
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -217,7 +235,7 @@ CreatingProgramWith::
 
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[[2,1],[3,1]],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"affectedFilesPendingEmit":[[2,1],[3,1]],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -231,27 +249,33 @@ CreatingProgramWith::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -292,7 +316,7 @@ CreatingProgramWith::
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 928
+  "size": 982
 }
 
 //// [/user/username/projects/myproject/a.d.ts]
@@ -345,7 +369,7 @@ Change:: Emit all files
 
 Input::
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n"},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n"}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../a/lib/lib.d.ts","./a.ts","./b.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-10726455937-export const x = 10;","signature":"-6821242887-export declare const x = 10;\n","impliedFormat":1},{"version":"-13729955264-export const y = 10;","signature":"-7152472870-export declare const y = 10;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"module":2,"noEmitOnError":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./b.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -359,27 +383,33 @@ Input::
       "../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./a.ts": {
         "original": {
           "version": "-10726455937-export const x = 10;",
-          "signature": "-6821242887-export declare const x = 10;\n"
+          "signature": "-6821242887-export declare const x = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-10726455937-export const x = 10;",
-        "signature": "-6821242887-export declare const x = 10;\n"
+        "signature": "-6821242887-export declare const x = 10;\n",
+        "impliedFormat": "commonjs"
       },
       "./b.ts": {
         "original": {
           "version": "-13729955264-export const y = 10;",
-          "signature": "-7152472870-export declare const y = 10;\n"
+          "signature": "-7152472870-export declare const y = 10;\n",
+          "impliedFormat": 1
         },
         "version": "-13729955264-export const y = 10;",
-        "signature": "-7152472870-export declare const y = 10;\n"
+        "signature": "-7152472870-export declare const y = 10;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -406,7 +436,7 @@ Input::
     "latestChangedDtsFile": "./b.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 887
+  "size": 941
 }
 
 //// [/user/username/projects/myproject/a.js]
diff --git a/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine-without-implementing-useSourceOfProjectReferenceRedirect.js b/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine-without-implementing-useSourceOfProjectReferenceRedirect.js
index ecb14540c1ce7..55722f2832093 100644
--- a/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine-without-implementing-useSourceOfProjectReferenceRedirect.js
+++ b/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine-without-implementing-useSourceOfProjectReferenceRedirect.js
@@ -93,7 +93,7 @@ declare class class2 {
 
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,30 +107,36 @@ declare class class2 {
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -151,7 +157,7 @@ declare class class2 {
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 864
+  "size": 918
 }
 
 
@@ -381,7 +387,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -396,39 +402,47 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.d.ts": {
         "original": {
           "version": "-3469165364-declare class class3 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469165364-declare class class3 {}",
         "signature": "-3469165364-declare class class3 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -450,7 +464,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 968
+  "size": 1040
 }
 
 
@@ -583,7 +597,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -597,30 +611,36 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -639,7 +659,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 860
+  "size": 914
 }
 
 
@@ -774,7 +794,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.d.ts","../project1/class3.d.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469237238-declare class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"-3469165364-declare class class3 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -789,39 +809,47 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.d.ts": {
         "original": {
           "version": "-3469237238-declare class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469237238-declare class class1 {}",
         "signature": "-3469237238-declare class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.d.ts": {
         "original": {
           "version": "-3469165364-declare class class3 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-3469165364-declare class class3 {}",
         "signature": "-3469165364-declare class class3 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -843,7 +871,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 968
+  "size": 1040
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine.js b/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine.js
index 862eed85df403..07188b8d65f4e 100644
--- a/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine.js
+++ b/tests/baselines/reference/tscWatch/watchApi/when-new-file-is-added-to-the-referenced-project-with-host-implementing-getParsedCommandLine.js
@@ -93,7 +93,7 @@ declare class class2 {
 
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"777933178-class class1 {}","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"777933178-class class1 {}","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,30 +107,36 @@ declare class class2 {
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.ts": {
         "original": {
           "version": "777933178-class class1 {}",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777933178-class class1 {}",
         "signature": "777933178-class class1 {}",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -151,7 +157,7 @@ declare class class2 {
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 852
+  "size": 906
 }
 
 
@@ -246,7 +252,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
 
 //// [/user/username/projects/myproject/projects/project2/class2.js] file written with same contents
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.ts","../project1/class3.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"777933178-class class1 {}","signature":"-2723220098-declare class class1 {\n}\n","affectsGlobalScope":true},{"version":"778005052-class class3 {}","signature":"-2644949312-declare class class3 {\n}\n","affectsGlobalScope":true},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../project1/class1.ts","../project1/class3.ts","./class2.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"777933178-class class1 {}","signature":"-2723220098-declare class class1 {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"778005052-class class3 {}","signature":"-2644949312-declare class class3 {\n}\n","affectsGlobalScope":true,"impliedFormat":1},{"version":"777969115-class class2 {}","signature":"-2684084705-declare class class2 {\n}\n","affectsGlobalScope":true,"impliedFormat":1}],"root":[4],"options":{"composite":true,"module":0},"semanticDiagnosticsPerFile":[1,2,3,4],"latestChangedDtsFile":"./class2.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/projects/project2/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -261,41 +267,49 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class1.ts": {
         "original": {
           "version": "777933178-class class1 {}",
           "signature": "-2723220098-declare class class1 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777933178-class class1 {}",
         "signature": "-2723220098-declare class class1 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../project1/class3.ts": {
         "original": {
           "version": "778005052-class class3 {}",
           "signature": "-2644949312-declare class class3 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "778005052-class class3 {}",
         "signature": "-2644949312-declare class class3 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./class2.ts": {
         "original": {
           "version": "777969115-class class2 {}",
           "signature": "-2684084705-declare class class2 {\n}\n",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "777969115-class class2 {}",
         "signature": "-2684084705-declare class class2 {\n}\n",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -317,7 +331,7 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/projects/proj
     "latestChangedDtsFile": "./class2.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1052
+  "size": 1124
 }
 
 
diff --git a/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-when-there-is-no-config-file-name.js b/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-when-there-is-no-config-file-name.js
index 39fd7f37b0584..61d398866bfb0 100644
--- a/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-when-there-is-no-config-file-name.js
+++ b/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-when-there-is-no-config-file-name.js
@@ -78,6 +78,9 @@ DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 1 undefined Failed
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 1 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /user/username/projects/project/lib/index.d.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/project/lib/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Triggered with /user/username/projects/project/app.js :: WatchInfo: /user/username/projects 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/project/app.js :: WatchInfo: /user/username/projects 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -92,6 +95,14 @@ console.log(lib_1.one);
 
 
 
+PolledWatches::
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
diff --git a/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-with-extends-when-there-is-no-config-file-name.js b/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-with-extends-when-there-is-no-config-file-name.js
index 1431b9ff575a8..94be84123d12a 100644
--- a/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-with-extends-when-there-is-no-config-file-name.js
+++ b/tests/baselines/reference/tscWatch/watchApi/when-watching-referenced-project-with-extends-when-there-is-no-config-file-name.js
@@ -76,6 +76,9 @@ DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 1 undefined Failed
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 1 undefined Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /user/username/projects/project/lib/index.d.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/project/lib/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Triggered with /user/username/projects/project/app.js :: WatchInfo: /user/username/projects 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/project/app.js :: WatchInfo: /user/username/projects 1 undefined Failed Lookup Locations
 [HH:MM:SS AM] Found 0 errors. Watching for file changes.
@@ -90,6 +93,14 @@ console.log(lib_1.one);
 
 
 
+PolledWatches::
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false-useFsEventsOnParentDirectory.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false-useFsEventsOnParentDirectory.js
index 7266fe1c8b63e..8b45debc8c8c4 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false-useFsEventsOnParentDirectory.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false-useFsEventsOnParentDirectory.js
@@ -36,6 +36,8 @@ CreatingProgramWith::
   options: {"watch":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 {"watchFile":5} Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"watchFile":5} Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"watchFile":5} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"watchFile":5} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":5} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":5} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"watchFile":5} Type roots
@@ -61,6 +63,8 @@ PolledWatches::
 FsWatches::
 /a/lib: *new*
   {}
+/user/username/projects: *new*
+  {}
 /user/username/projects/myproject: *new*
   {}
 
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false.js
index 551464d14559c..cc418e1d9a177 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-false.js
@@ -36,6 +36,8 @@ CreatingProgramWith::
   options: {"watch":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -55,8 +57,12 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true-useFsEventsOnParentDirectory.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true-useFsEventsOnParentDirectory.js
index 9008161f049a3..a22c4e370ec0c 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true-useFsEventsOnParentDirectory.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true-useFsEventsOnParentDirectory.js
@@ -36,6 +36,8 @@ CreatingProgramWith::
   options: {"watch":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 {"watchFile":5} Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"watchFile":5} Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"watchFile":5} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"watchFile":5} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":5} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":5} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"watchFile":5} Type roots
@@ -61,6 +63,8 @@ PolledWatches::
 FsWatches::
 /a/lib: *new*
   {"inode":2}
+/user/username/projects: *new*
+  {"inode":6}
 /user/username/projects/myproject: *new*
   {"inode":7}
 
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true.js
index 63594f096e753..bd3252a8f11d0 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/fsWatchWithTimestamp-true.js
@@ -36,6 +36,8 @@ CreatingProgramWith::
   options: {"watch":true,"extendedDiagnostics":true,"configFilePath":"/user/username/projects/myproject/tsconfig.json"}
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 undefined Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Type roots
@@ -55,8 +57,12 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-event-ends-with-tilde.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-event-ends-with-tilde.js
index ad7e643788e88..9f1f4c66f9f69 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-event-ends-with-tilde.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-event-ends-with-tilde.js
@@ -46,6 +46,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 {
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"watchFile":4} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"watchFile":4} Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"watchFile":4} Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"watchFile":4} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"watchFile":4} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"watchFile":4} Type roots
@@ -67,8 +69,12 @@ var foo_1 = require("./foo");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -152,8 +158,12 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -275,8 +285,12 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-occurs-when-file-is-still-on-the-disk.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-occurs-when-file-is-still-on-the-disk.js
index c3aed85d4fea9..285ebc3c77463 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-occurs-when-file-is-still-on-the-disk.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode-when-rename-occurs-when-file-is-still-on-the-disk.js
@@ -44,6 +44,8 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo.ts 250 {"watchFile":4} Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 {"watchFile":4} Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"watchFile":4} Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"watchFile":4} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"watchFile":4} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"watchFile":4} Type roots
@@ -68,8 +70,12 @@ var foo_1 = require("./foo");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -125,8 +131,12 @@ sysLog:: /user/username/projects/myproject/foo.ts:: Changing watcher to PresentF
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -224,8 +234,12 @@ sysLog:: /user/username/projects/myproject/foo.ts:: Changing watcher to PresentF
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode.js
index c8a24d0cec29f..d5869f18b0fd9 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-on-inode.js
@@ -46,6 +46,8 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 {
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"watchFile":4} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"watchFile":4} Failed Lookup Locations
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"watchFile":4} Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"watchFile":4} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"watchFile":4} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"watchFile":4} Type roots
@@ -67,8 +69,12 @@ var foo_1 = require("./foo");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -140,8 +146,12 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -251,8 +261,12 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /user/username/projects/myprojec
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-when-rename-occurs-when-file-is-still-on-the-disk.js b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-when-rename-occurs-when-file-is-still-on-the-disk.js
index 7e866e2348b85..6936caa08e4da 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-when-rename-occurs-when-file-is-still-on-the-disk.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/fsWatch/when-using-file-watching-thats-when-rename-occurs-when-file-is-still-on-the-disk.js
@@ -44,6 +44,8 @@ CreatingProgramWith::
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo.ts 250 {"watchFile":4} Source file
 FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main.ts 250 {"watchFile":4} Source file
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"watchFile":4} Source file
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"watchFile":4} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"watchFile":4} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"watchFile":4} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"watchFile":4} Type roots
@@ -68,8 +70,12 @@ var foo_1 = require("./foo");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders-with-synchronousWatchDirectory.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders-with-synchronousWatchDirectory.js
index 1c7b4af4d5862..7fc9dd9894540 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders-with-synchronousWatchDirectory.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders-with-synchronousWatchDirectory.js
@@ -48,6 +48,12 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/user/projects/myproject/src/file.ts"]
   options: {"extendedDiagnostics":true,"traceResolution":true,"watch":true,"configFilePath":"/home/user/projects/myproject/tsconfig.json"}
+File '/home/user/projects/myproject/src/package.json' does not exist.
+File '/home/user/projects/myproject/package.json' does not exist.
+File '/home/user/projects/package.json' does not exist.
+File '/home/user/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src/file.ts 250 {"synchronousWatchDirectory":true} Source file
 ======== Resolving module 'a' from '/home/user/projects/myproject/src/file.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -63,7 +69,17 @@ File '/home/user/projects/myproject/node_modules/a/index.tsx' does not exist.
 File '/home/user/projects/myproject/node_modules/a/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/user/projects/myproject/node_modules/a/index.d.ts', result '/home/user/projects/myproject/node_modules/reala/index.d.ts'.
 ======== Module name 'a' was successfully resolved to '/home/user/projects/myproject/node_modules/reala/index.d.ts'. ========
+File '/home/user/projects/myproject/node_modules/reala/package.json' does not exist.
+File '/home/user/projects/myproject/node_modules/package.json' does not exist.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/reala/index.d.ts 250 {"synchronousWatchDirectory":true} Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"synchronousWatchDirectory":true} Source file
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
@@ -71,6 +87,11 @@ DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/a 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/reala/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/@types 1 {"synchronousWatchDirectory":true} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/@types 1 {"synchronousWatchDirectory":true} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_modules/@types 1 {"synchronousWatchDirectory":true} Type roots
@@ -92,8 +113,18 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /home/user/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/user/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/home/user/projects/myproject/node_modules/reala/package.json: *new*
+  {"pollingInterval":2000}
+/home/user/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/home/user/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /home/user/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/user/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -178,10 +209,20 @@ Elapsed:: *ms DirectoryWatcher:: Triggered with /home/user/projects/myproject/no
 PolledWatches::
 /home/user/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/myproject/node_modules/reala/index.d.ts: *new*
   {"pollingInterval":250}
+/home/user/projects/myproject/node_modules/reala/package.json:
+  {"pollingInterval":2000}
+/home/user/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/home/user/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -228,7 +269,23 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/user/projects/myproject/src/file.ts"]
   options: {"extendedDiagnostics":true,"traceResolution":true,"watch":true,"configFilePath":"/home/user/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/node_modules/reala/package.json' does not exist.
+File '/home/user/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/user/projects/myproject/node_modules/reala/index.d.ts 250 {"synchronousWatchDirectory":true} Source file
+File '/home/user/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'a' from '/home/user/projects/myproject/src/file.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'a' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -259,8 +316,13 @@ Directory '/home/user/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'a' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_modules 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_modules 1 {"synchronousWatchDirectory":true} Failed Lookup Locations
+FileWatcher:: Close:: WatchInfo: /home/user/projects/myproject/node_modules/reala/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
+FileWatcher:: Close:: WatchInfo: /home/user/projects/myproject/node_modules/package.json 2000 {"synchronousWatchDirectory":true} File location affecting resolution
 src/file.ts:1:20 - error TS2307: Cannot find module 'a' or its corresponding type declarations.
 
 1 import * as a from "a"
@@ -275,14 +337,24 @@ Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_mod
 PolledWatches::
 /home/user/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/home/user/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/node_modules: *new*
   {"pollingInterval":500}
 /home/user/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
+/home/user/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/myproject/node_modules/reala/index.d.ts:
   {"pollingInterval":250}
+/home/user/projects/myproject/node_modules/reala/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders.js
index 73e0a33109975..1e7b235330019 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/when-there-are-symlinks-to-folders-in-recursive-folders.js
@@ -45,6 +45,12 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/user/projects/myproject/src/file.ts"]
   options: {"extendedDiagnostics":true,"traceResolution":true,"watch":true,"configFilePath":"/home/user/projects/myproject/tsconfig.json"}
+File '/home/user/projects/myproject/src/package.json' does not exist.
+File '/home/user/projects/myproject/package.json' does not exist.
+File '/home/user/projects/package.json' does not exist.
+File '/home/user/package.json' does not exist.
+File '/home/package.json' does not exist.
+File '/package.json' does not exist.
 FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src/file.ts 250 undefined Source file
 ======== Resolving module 'a' from '/home/user/projects/myproject/src/file.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
@@ -60,7 +66,17 @@ File '/home/user/projects/myproject/node_modules/a/index.tsx' does not exist.
 File '/home/user/projects/myproject/node_modules/a/index.d.ts' exists - use it as a name resolution result.
 Resolving real path for '/home/user/projects/myproject/node_modules/a/index.d.ts', result '/home/user/projects/myproject/node_modules/reala/index.d.ts'.
 ======== Module name 'a' was successfully resolved to '/home/user/projects/myproject/node_modules/reala/index.d.ts'. ========
+File '/home/user/projects/myproject/node_modules/reala/package.json' does not exist.
+File '/home/user/projects/myproject/node_modules/package.json' does not exist.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/reala/index.d.ts 250 undefined Source file
+File '/a/lib/package.json' does not exist.
+File '/a/package.json' does not exist.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 undefined Source file
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src 1 undefined Failed Lookup Locations
@@ -68,6 +84,11 @@ DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/a 1 undefined Failed Lookup Locations
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/reala/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /home/user/projects/myproject/src/package.json 2000 undefined File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/@types 1 undefined Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/myproject/node_modules/@types 1 undefined Type roots
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_modules/@types 1 undefined Type roots
@@ -87,8 +108,18 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /home/user/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/user/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/home/user/projects/myproject/node_modules/reala/package.json: *new*
+  {"pollingInterval":2000}
+/home/user/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/home/user/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /home/user/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/user/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -161,10 +192,20 @@ sysLog:: /home/user/projects/myproject/node_modules/reala/index.d.ts:: Changing
 PolledWatches::
 /home/user/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/myproject/node_modules/reala/index.d.ts: *new*
   {"pollingInterval":250}
+/home/user/projects/myproject/node_modules/reala/package.json:
+  {"pollingInterval":2000}
+/home/user/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/home/user/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -211,7 +252,23 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/user/projects/myproject/src/file.ts"]
   options: {"extendedDiagnostics":true,"traceResolution":true,"watch":true,"configFilePath":"/home/user/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/node_modules/reala/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 FileWatcher:: Close:: WatchInfo: /home/user/projects/myproject/node_modules/reala/index.d.ts 250 undefined Source file
+File '/home/user/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'a' from '/home/user/projects/myproject/src/file.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'a' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -242,8 +299,13 @@ Directory '/home/user/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'a' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_modules 1 undefined Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/user/projects/node_modules 1 undefined Failed Lookup Locations
+FileWatcher:: Close:: WatchInfo: /home/user/projects/myproject/node_modules/reala/package.json 2000 undefined File location affecting resolution
+FileWatcher:: Close:: WatchInfo: /home/user/projects/myproject/node_modules/package.json 2000 undefined File location affecting resolution
 src/file.ts:1:20 - error TS2307: Cannot find module 'a' or its corresponding type declarations.
 
 1 import * as a from "a"
@@ -281,14 +343,24 @@ sysLog:: Elapsed:: *ms:: onTimerToUpdateChildWatches:: 0 undefined
 PolledWatches::
 /home/user/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/home/user/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/node_modules: *new*
   {"pollingInterval":500}
 /home/user/projects/node_modules/@types:
   {"pollingInterval":500}
+/home/user/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
+/home/user/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
 /home/user/projects/myproject/node_modules/reala/index.d.ts:
   {"pollingInterval":250}
+/home/user/projects/myproject/node_modules/reala/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -378,6 +450,21 @@ Synchronizing program
 CreatingProgramWith::
   roots: ["/home/user/projects/myproject/src/file.ts"]
   options: {"extendedDiagnostics":true,"traceResolution":true,"watch":true,"configFilePath":"/home/user/projects/myproject/tsconfig.json"}
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/myproject/package.json' does not exist according to earlier cached lookups.
+File '/home/user/projects/package.json' does not exist according to earlier cached lookups.
+File '/home/user/package.json' does not exist according to earlier cached lookups.
+File '/home/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 ======== Resolving module 'a' from '/home/user/projects/myproject/src/file.ts'. ========
 Module resolution kind is not specified, using 'Node10'.
 Loading module 'a' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -408,6 +495,9 @@ Directory '/home/user/node_modules' does not exist, skipping all lookups in it.
 Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Directory '/node_modules' does not exist, skipping all lookups in it.
 ======== Module name 'a' was not resolved. ========
+File '/a/lib/package.json' does not exist according to earlier cached lookups.
+File '/a/package.json' does not exist according to earlier cached lookups.
+File '/package.json' does not exist according to earlier cached lookups.
 src/file.ts:1:20 - error TS2307: Cannot find module 'a' or its corresponding type declarations.
 
 1 import * as a from "a"
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-renaming-a-file.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-renaming-a-file.js
index 06b05db0b5d67..ae2bb8b20725f 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-renaming-a-file.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-renaming-a-file.js
@@ -52,8 +52,14 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -121,10 +127,16 @@ sysLog:: /user/username/projects/myproject/src/file2.ts:: Changing watcher to Mi
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/file2.ts: *new*
   {"pollingInterval":250}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -171,10 +183,16 @@ Output::
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/file2.ts:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/src/file2.ts:
@@ -260,8 +278,14 @@ exports.x = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/src/file2.ts:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-with-outDir-and-declaration-enabled.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-with-outDir-and-declaration-enabled.js
index a1c7996e5f858..4b5d37234520d 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-with-outDir-and-declaration-enabled.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory-with-outDir-and-declaration-enabled.js
@@ -50,8 +50,18 @@ export {};
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/file2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -162,8 +172,18 @@ export declare const y = 10;
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/file2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory.js
index 58f6befb99e5f..5fbca4e8619af 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchDirectories/with-non-synchronous-watch-directory.js
@@ -41,8 +41,18 @@ Object.defineProperty(exports, "__esModule", { value: true });
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/file2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -121,8 +131,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/file2/index.d.ts: *new*
   {"pollingInterval":250}
+/user/username/projects/myproject/node_modules/file2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -176,14 +196,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/file2/index.d.ts:
   {"pollingInterval":250}
+/user/username/projects/myproject/node_modules/file2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -296,10 +326,16 @@ sysLog:: /user/username/projects/myproject/node_modules:: Changing watcher to Pr
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
@@ -358,10 +394,16 @@ After running Timeout callback:: count: 2
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -424,8 +466,18 @@ Output::
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/file2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/node_modules:
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-extendedDiagnostics.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-extendedDiagnostics.js
index ced53f0f301ae..1f45995c35da0 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-extendedDiagnostics.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-extendedDiagnostics.js
@@ -58,6 +58,11 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Source file
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Failed Lookup Locations
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} File location affecting resolution
 ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Type roots
@@ -78,8 +83,18 @@ var bar_1 = require("bar");
 
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching-extendedDiagnostics.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching-extendedDiagnostics.js
index 3221f7c15e89f..1b9125c42176b 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching-extendedDiagnostics.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching-extendedDiagnostics.js
@@ -59,6 +59,11 @@ FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} Source file
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} Failed Lookup Locations
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/**/temp"]} Type roots
@@ -80,8 +85,18 @@ var bar_1 = require("bar");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching.js
index 51809bf4798ed..c0e658a713c5b 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option-with-recursive-directory-watching.js
@@ -61,8 +61,18 @@ var bar_1 = require("bar");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option.js
index 0c4ef46a0ae98..6087fdbfb43d3 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeDirectories-option.js
@@ -59,8 +59,18 @@ var bar_1 = require("bar");
 
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option-extendedDiagnostics.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option-extendedDiagnostics.js
index c5a0c59025ffe..92d949f4a9efc 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option-extendedDiagnostics.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option-extendedDiagnostics.js
@@ -59,6 +59,11 @@ ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modul
 FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 250 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} Source file
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} Failed Lookup Locations
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} Failed Lookup Locations
+ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} File location affecting resolution
+ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} File location affecting resolution
+FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} File location affecting resolution
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} Type roots
 Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} Type roots
 DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/node_modules/*"]} Type roots
@@ -82,8 +87,14 @@ var bar_1 = require("bar");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option.js b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option.js
index 2d0bdad885860..3270937282e81 100644
--- a/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option.js
+++ b/tests/baselines/reference/tscWatch/watchEnvironment/watchOptions/with-excludeFiles-option.js
@@ -61,8 +61,14 @@ var bar_1 = require("bar");
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Auto-importable-file-is-in-inferred-project-until-imported.js b/tests/baselines/reference/tsserver/autoImportProvider/Auto-importable-file-is-in-inferred-project-until-imported.js
index 9c5195aecdb51..e069462a9fd41 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Auto-importable-file-is-in-inferred-project-until-imported.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Auto-importable-file-is-in-inferred-project-until-imported.js
@@ -29,6 +29,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /node_modules/@angular/forms
 Info seq  [hh:mm:ss:mss] For info: /node_modules/@angular/forms/forms.d.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -50,6 +51,10 @@ PolledWatches::
 /node_modules/@angular/forms/node_modules/@types: *new*
   {"pollingInterval":500}
 
+FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
+
 Projects::
 /dev/null/inferredProject1* (Inferred) *new*
     projectStateVersion: 1
@@ -199,7 +204,7 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
-/node_modules/@angular/forms/package.json: *new*
+/node_modules/@angular/forms/package.json:
   {}
 
 Projects::
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Closes-AutoImportProviderProject-when-host-project-closes.js b/tests/baselines/reference/tsserver/autoImportProvider/Closes-AutoImportProviderProject-when-host-project-closes.js
index 96b2d8b3bf509..cd1d89cd573fe 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Closes-AutoImportProviderProject-when-host-project-closes.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Closes-AutoImportProviderProject-when-host-project-closes.js
@@ -68,6 +68,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -209,6 +210,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json: *new*
   {}
 /tsconfig.json: *new*
@@ -275,6 +278,8 @@ PolledWatches::
 FsWatches::
 /index.ts: *new*
   {}
+/node_modules/@angular/forms/package.json:
+  {}
 /package.json:
   {}
 /tsconfig.json:
@@ -336,6 +341,7 @@ Info seq  [hh:mm:ss:mss] 	Files (1)
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject2*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -364,6 +370,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo:  1 undefined Conf
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo:  1 undefined Config: /tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tsconfig.json 2000 undefined Project: /tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /tsconfig.json WatchType: Missing file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -387,6 +394,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json:
+  {}
 /package.json:
   {}
 
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Does-not-close-when-root-files-are-redirects-that-dont-actually-exist.js b/tests/baselines/reference/tsserver/autoImportProvider/Does-not-close-when-root-files-are-redirects-that-dont-actually-exist.js
index 65167f2f9f413..6d1720c3fd351 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Does-not-close-when-root-files-are-redirects-that-dont-actually-exist.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Does-not-close-when-root-files-are-redirects-that-dont-actually-exist.js
@@ -90,6 +90,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/a/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/a/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/a/node_modules/b/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -233,6 +234,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/packages/a/node_modules/b/package.json: *new*
+  {}
 /packages/a/node_modules/b/tsconfig.json: *new*
   {}
 /packages/a/package.json: *new*
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Does-not-create-auto-import-providers-upon-opening-projects-for-find-all-references.js b/tests/baselines/reference/tsserver/autoImportProvider/Does-not-create-auto-import-providers-upon-opening-projects-for-find-all-references.js
index 5f03f93dad841..f27958ea5596e 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Does-not-create-auto-import-providers-upon-opening-projects-for-find-all-references.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Does-not-create-auto-import-providers-upon-opening-projects-for-find-all-references.js
@@ -84,6 +84,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -235,6 +236,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json: *new*
   {}
 /packages/b/package.json: *new*
@@ -665,6 +668,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json:
+  {}
 /package.json:
   {}
 /packages/a/index.ts: *new*
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Does-not-schedule-ensureProjectForOpenFiles-on-AutoImportProviderProject-creation.js b/tests/baselines/reference/tsserver/autoImportProvider/Does-not-schedule-ensureProjectForOpenFiles-on-AutoImportProviderProject-creation.js
index 4e65406b1207f..99b2a731bb5ec 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Does-not-schedule-ensureProjectForOpenFiles-on-AutoImportProviderProject-creation.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Does-not-schedule-ensureProjectForOpenFiles-on-AutoImportProviderProject-creation.js
@@ -272,6 +272,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -289,6 +290,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json:
   {}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Recovers-from-an-unparseable-package_json.js b/tests/baselines/reference/tsserver/autoImportProvider/Recovers-from-an-unparseable-package_json.js
index e2ad22e98adba..e87b990158850 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Recovers-from-an-unparseable-package_json.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Recovers-from-an-unparseable-package_json.js
@@ -224,6 +224,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -241,6 +242,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json:
   {}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-automatic-changes-in-node_modules.js b/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-automatic-changes-in-node_modules.js
index c3f3f90a08656..f8c82a1d15e04 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-automatic-changes-in-node_modules.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-automatic-changes-in-node_modules.js
@@ -74,6 +74,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 2 root files in 2 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -218,6 +219,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json: *new*
   {}
 /tsconfig.json: *new*
@@ -318,6 +321,7 @@ Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json pr
 Info seq  [hh:mm:ss:mss] Same program as before
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 2 root files in 2 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: false structureIsReused:: Completely Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -333,6 +337,26 @@ Info seq  [hh:mm:ss:mss] 	Files (2)
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 After getAutoImportProvider
 
+PolledWatches::
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+
+FsWatches::
+/package.json:
+  {}
+/tsconfig.json:
+  {}
+
+FsWatches *deleted*::
+/node_modules/@angular/forms/package.json:
+  {}
+
+FsWatchesRecursive::
+/:
+  {}
+/node_modules:
+  {}
+
 Projects::
 /dev/null/autoImportProviderProject1* (AutoImportProvider) *changed*
     projectStateVersion: 2
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-manual-changes-in-node_modules.js b/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-manual-changes-in-node_modules.js
index 090a30c603cb8..ee858812198eb 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-manual-changes-in-node_modules.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-manual-changes-in-node_modules.js
@@ -74,6 +74,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 2 root files in 2 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -218,6 +219,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json: *new*
   {}
 /tsconfig.json: *new*
@@ -266,6 +269,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /node_modules/@angular/forms
 Info seq  [hh:mm:ss:mss] For info: /node_modules/@angular/forms/forms.d.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -288,6 +292,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json:
+  {}
 /package.json:
   {}
 /tsconfig.json:
@@ -379,6 +385,8 @@ PolledWatches::
 FsWatches::
 /a/data/package.json: *new*
   {}
+/node_modules/@angular/forms/package.json:
+  {}
 /package.json:
   {}
 /tsconfig.json:
@@ -538,7 +546,7 @@ PolledWatches::
 FsWatches::
 /a/data/package.json:
   {}
-/node_modules/@angular/forms/package.json: *new*
+/node_modules/@angular/forms/package.json:
   {}
 /package.json:
   {}
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-package_json-changes.js b/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-package_json-changes.js
index b2466a810c339..5d244fd8c1ffe 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-package_json-changes.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Responds-to-package_json-changes.js
@@ -224,6 +224,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -241,6 +242,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json:
   {}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Reuses-autoImportProvider-when-program-structure-is-unchanged.js b/tests/baselines/reference/tsserver/autoImportProvider/Reuses-autoImportProvider-when-program-structure-is-unchanged.js
index d83ca3496e1b0..b135387857e2e 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Reuses-autoImportProvider-when-program-structure-is-unchanged.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Reuses-autoImportProvider-when-program-structure-is-unchanged.js
@@ -68,6 +68,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -209,6 +210,8 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
 /package.json: *new*
   {}
 /tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/Shared-source-files-between-AutoImportProvider-and-main-program.js b/tests/baselines/reference/tsserver/autoImportProvider/Shared-source-files-between-AutoImportProvider-and-main-program.js
index 248d832c2ce10..537cfd03036a7 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/Shared-source-files-between-AutoImportProvider-and-main-program.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/Shared-source-files-between-AutoImportProvider-and-main-program.js
@@ -89,6 +89,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /package.json 250 unde
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/node/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/memfs/lib/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -265,6 +266,8 @@ After request
 PolledWatches::
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/memfs/lib/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /node_modules/@types/node/package.json: *new*
diff --git a/tests/baselines/reference/tsserver/autoImportProvider/projects-already-inside-node_modules.js b/tests/baselines/reference/tsserver/autoImportProvider/projects-already-inside-node_modules.js
index ebd5fbf154a56..908cfb28e7b1d 100644
--- a/tests/baselines/reference/tsserver/autoImportProvider/projects-already-inside-node_modules.js
+++ b/tests/baselines/reference/tsserver/autoImportProvider/projects-already-inside-node_modules.js
@@ -26,6 +26,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /node_modules/@angular/forms
 Info seq  [hh:mm:ss:mss] For info: /node_modules/@angular/forms/forms.d.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -47,6 +48,10 @@ PolledWatches::
 /node_modules/@angular/forms/node_modules/@types: *new*
   {"pollingInterval":500}
 
+FsWatches::
+/node_modules/@angular/forms/package.json: *new*
+  {}
+
 Projects::
 /dev/null/inferredProject1* (Inferred) *new*
     projectStateVersion: 1
@@ -200,7 +205,7 @@ PolledWatches::
   {"pollingInterval":500}
 
 FsWatches::
-/node_modules/@angular/forms/package.json: *new*
+/node_modules/@angular/forms/package.json:
   {}
 
 Projects::
diff --git a/tests/baselines/reference/tsserver/auxiliaryProject/file-is-added-later-through-finding-definition.js b/tests/baselines/reference/tsserver/auxiliaryProject/file-is-added-later-through-finding-definition.js
index 593ad119a072c..43f95a155bd4d 100644
--- a/tests/baselines/reference/tsserver/auxiliaryProject/file-is-added-later-through-finding-definition.js
+++ b/tests/baselines/reference/tsserver/auxiliaryProject/file-is-added-later-through-finding-definition.js
@@ -76,6 +76,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/@types/yargs/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/yargs/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -116,10 +118,14 @@ After request
 PolledWatches::
 /user/users/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/users/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/users/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/users/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/users/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -177,6 +183,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/node_modules 1 undefined Project: /dev/null/auxiliaryProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/node_modules 1 undefined Project: /dev/null/auxiliaryProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/yargs/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/auxiliaryProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/auxiliaryProject1*' (Auxiliary)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -238,12 +246,16 @@ After request
 PolledWatches::
 /user/users/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
+/user/users/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/users/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/users/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/users/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/users/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/auxiliaryProject/resolution-is-reused-from-different-folder.js b/tests/baselines/reference/tsserver/auxiliaryProject/resolution-is-reused-from-different-folder.js
index 2660bdc604b30..045f97e91a6f0 100644
--- a/tests/baselines/reference/tsserver/auxiliaryProject/resolution-is-reused-from-different-folder.js
+++ b/tests/baselines/reference/tsserver/auxiliaryProject/resolution-is-reused-from-different-folder.js
@@ -88,6 +88,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 un
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/yargs/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/folder/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/folder/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/folder/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/some/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/some/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/some/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -134,20 +138,28 @@ After request
 PolledWatches::
 /user/users/projects/myproject/folder/node_modules: *new*
   {"pollingInterval":500}
+/user/users/projects/myproject/folder/package.json: *new*
+  {"pollingInterval":2000}
 /user/users/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/users/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/users/projects/myproject/some/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/users/projects/myproject/some/node_modules: *new*
   {"pollingInterval":500}
 /user/users/projects/myproject/some/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/users/projects/myproject/some/package.json: *new*
+  {"pollingInterval":2000}
 /user/users/projects/myproject/some/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/users/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/users/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/users/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -215,6 +227,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/node_modules/yargs/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/folder/node_modules 1 undefined Project: /dev/null/auxiliaryProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/users/projects/myproject/folder/node_modules 1 undefined Project: /dev/null/auxiliaryProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/folder/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/users/projects/myproject/some/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/auxiliaryProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/auxiliaryProject1*' (Auxiliary)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -265,14 +281,20 @@ After request
 PolledWatches::
 /user/users/projects/myproject/folder/node_modules:
   {"pollingInterval":500}
+/user/users/projects/myproject/folder/package.json:
+  {"pollingInterval":2000}
 /user/users/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
+/user/users/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/users/projects/myproject/some/jsconfig.json:
   {"pollingInterval":2000}
 /user/users/projects/myproject/some/node_modules:
   {"pollingInterval":500}
 /user/users/projects/myproject/some/node_modules/@types:
   {"pollingInterval":500}
+/user/users/projects/myproject/some/package.json:
+  {"pollingInterval":2000}
 /user/users/projects/myproject/some/tsconfig.json:
   {"pollingInterval":2000}
 /user/users/projects/myproject/tsconfig.json:
@@ -281,6 +303,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/users/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/users/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Classic-module-resolution-mode.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Classic-module-resolution-mode.js
index 345f33b0a5436..19b8cf0a20308 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Classic-module-resolution-mode.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Classic-module-resolution-mode.js
@@ -71,6 +71,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/foo/boo/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/foo/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/foo/boo/moo/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/@types 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/@types 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Type roots
@@ -185,10 +190,20 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/moo/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/proj/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/proj/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/proj/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -250,8 +265,18 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/moo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/proj/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/proj/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/proj/node_modules:
@@ -297,6 +322,8 @@ Info seq  [hh:mm:ss:mss] Running: /users/username/projects/proj/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/proj/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/debug/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/proj/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -353,8 +380,22 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/moo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/proj/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/proj/node_modules/debug/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Node-module-resolution-mode.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Node-module-resolution-mode.js
index 15c0d810338cf..692e7ad20c8ea 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Node-module-resolution-mode.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/includes-the-parent-folder-FLLs-in-Node-module-resolution-mode.js
@@ -71,6 +71,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/foo/boo/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/foo/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/foo/boo/moo/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/@types 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/@types 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Type roots
@@ -185,10 +190,20 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/moo/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/proj/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/proj/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/proj/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -250,8 +265,18 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/moo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/proj/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/proj/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/proj/node_modules:
@@ -297,6 +322,8 @@ Info seq  [hh:mm:ss:mss] Running: /users/username/projects/proj/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/proj/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/debug/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/proj/node_modules/package.json 2000 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/proj/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/proj/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -353,8 +380,22 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/moo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/boo/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/proj/foo/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/proj/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/proj/node_modules/debug/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/proj/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/loads-missing-files-from-disk.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/loads-missing-files-from-disk.js
index 903a86cb3ad53..c3ee6f08ccf70 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/loads-missing-files-from-disk.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/loads-missing-files-from-disk.js
@@ -48,6 +48,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -80,12 +82,16 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/jsconfig.json: *new*
   {"pollingInterval":2000}
 /users/username/projects/project/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -150,6 +156,26 @@ Info seq  [hh:mm:ss:mss] fileExists:: [
     "key": "/jsconfig.json",
     "count": 1
   },
+  {
+    "key": "/users/username/projects/project/package.json",
+    "count": 3
+  },
+  {
+    "key": "/users/username/projects/package.json",
+    "count": 3
+  },
+  {
+    "key": "/users/username/package.json",
+    "count": 2
+  },
+  {
+    "key": "/users/package.json",
+    "count": 2
+  },
+  {
+    "key": "/package.json",
+    "count": 2
+  },
   {
     "key": "/users/username/projects/project/bar.ts",
     "count": 1
@@ -249,48 +275,28 @@ Info seq  [hh:mm:ss:mss] fileExists:: [
   {
     "key": "/bar.jsx",
     "count": 1
-  },
-  {
-    "key": "/users/username/projects/project/package.json",
-    "count": 1
-  },
-  {
-    "key": "/users/username/projects/package.json",
-    "count": 1
-  },
-  {
-    "key": "/users/username/package.json",
-    "count": 1
-  },
-  {
-    "key": "/users/package.json",
-    "count": 1
-  },
-  {
-    "key": "/package.json",
-    "count": 1
   }
 ]
 Info seq  [hh:mm:ss:mss] directoryExists:: [
   {
     "key": "/users/username/projects/project",
-    "count": 3
+    "count": 4
   },
   {
     "key": "/users/username/projects",
-    "count": 3
+    "count": 4
   },
   {
     "key": "/users/username",
-    "count": 2
+    "count": 3
   },
   {
     "key": "/users",
-    "count": 2
+    "count": 3
   },
   {
     "key": "/",
-    "count": 2
+    "count": 3
   },
   {
     "key": "/users/username/projects/project/node_modules",
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-after-installation.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-after-installation.js
index 4e08ec759eafc..38e4effcb5c7a 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-after-installation.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-after-installation.js
@@ -115,6 +115,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/ro
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/@types 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/@types 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules/@types 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Type roots
@@ -231,6 +232,8 @@ PolledWatches::
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json: *new*
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json: *new*
   {}
 
@@ -711,6 +714,8 @@ PolledWatches *deleted*::
 FsWatches::
 /a/lib/lib.d.ts:
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json:
   {}
 
@@ -1221,6 +1226,8 @@ PolledWatches *deleted*::
 FsWatches::
 /a/lib/lib.d.ts:
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json:
   {}
 
@@ -2102,6 +2109,8 @@ FsWatches::
   {}
 /user/username/rootfolder/otherfolder/a/b/node_modules/lodash/package.json: *new*
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json:
   {}
 
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-inbetween-installation.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-inbetween-installation.js
index e62f5c446c0b3..31aee30c145b9 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-inbetween-installation.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/npm-install-works-when-timeout-occurs-inbetween-installation.js
@@ -115,6 +115,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/ro
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/@types 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/@types 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules/@types 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/tsconfig.json WatchType: Type roots
@@ -231,6 +232,8 @@ PolledWatches::
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json: *new*
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json: *new*
   {}
 
@@ -714,6 +717,8 @@ PolledWatches *deleted*::
 FsWatches::
 /a/lib/lib.d.ts:
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json:
   {}
 
@@ -1312,6 +1317,8 @@ PolledWatches *deleted*::
 FsWatches::
 /a/lib/lib.d.ts:
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json:
   {}
 
@@ -2260,6 +2267,8 @@ FsWatches::
   {}
 /user/username/rootfolder/otherfolder/a/b/node_modules/lodash/package.json: *new*
   {}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {}
 /user/username/rootfolder/otherfolder/a/b/tsconfig.json:
   {}
 
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-insensitive-file-system.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-insensitive-file-system.js
index 4baf69dd57650..85182bfcd14f1 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-insensitive-file-system.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-insensitive-file-system.js
@@ -126,6 +126,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/node_modules 1 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/node_modules 1 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/app/redux/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/app/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/app/utils/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /Users/someuser/work/applications/frontend/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/Users/someuser/work/applications/frontend/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -288,8 +295,22 @@ After request
 PolledWatches::
 /Users/someuser/work/applications/frontend/node_modules: *new*
   {"pollingInterval":500}
+/Users/someuser/work/applications/frontend/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/redux/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/utils/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/package.json: *new*
+  {"pollingInterval":2000}
 /Users/someuser/work/applications/frontend/types: *new*
   {"pollingInterval":500}
+/Users/someuser/work/applications/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /Users/someuser/work/applications/frontend/src/app/redux/configureStore.ts: *new*
@@ -399,8 +420,22 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /Users/someuser/work/applications/frontend/node_modules:
   {"pollingInterval":500}
+/Users/someuser/work/applications/frontend/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/redux/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/utils/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/package.json:
+  {"pollingInterval":2000}
 /Users/someuser/work/applications/frontend/types:
   {"pollingInterval":500}
+/Users/someuser/work/applications/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /Users/someuser/work/applications/frontend/src/app/redux/configureStore.ts:
@@ -492,8 +527,22 @@ After request
 PolledWatches::
 /Users/someuser/work/applications/frontend/node_modules:
   {"pollingInterval":500}
+/Users/someuser/work/applications/frontend/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/redux/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/utils/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/package.json:
+  {"pollingInterval":2000}
 /Users/someuser/work/applications/frontend/types:
   {"pollingInterval":500}
+/Users/someuser/work/applications/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /Users/someuser/work/applications/frontend/src/app/redux/configureStore.ts:
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-sensitive-file-system.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-sensitive-file-system.js
index 64ecd1d306045..c1d5232f94052 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-sensitive-file-system.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/watchDirectories-for-config-file-with-case-sensitive-file-system.js
@@ -126,6 +126,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/node_modules 1 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/node_modules 1 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/app/redux/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/app/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/someuser/work/applications/frontend/src/app/utils/package.json 2000 undefined Project: /Users/someuser/work/applications/frontend/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /Users/someuser/work/applications/frontend/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/Users/someuser/work/applications/frontend/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -288,8 +295,22 @@ After request
 PolledWatches::
 /Users/someuser/work/applications/frontend/node_modules: *new*
   {"pollingInterval":500}
+/Users/someuser/work/applications/frontend/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/redux/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/utils/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/package.json: *new*
+  {"pollingInterval":2000}
 /Users/someuser/work/applications/frontend/types: *new*
   {"pollingInterval":500}
+/Users/someuser/work/applications/package.json: *new*
+  {"pollingInterval":2000}
+/Users/someuser/work/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /Users/someuser/work/applications/frontend/src/app/redux/configureStore.ts: *new*
@@ -399,8 +420,22 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /Users/someuser/work/applications/frontend/node_modules:
   {"pollingInterval":500}
+/Users/someuser/work/applications/frontend/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/redux/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/utils/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/package.json:
+  {"pollingInterval":2000}
 /Users/someuser/work/applications/frontend/types:
   {"pollingInterval":500}
+/Users/someuser/work/applications/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /Users/someuser/work/applications/frontend/src/app/redux/configureStore.ts:
@@ -492,8 +527,22 @@ After request
 PolledWatches::
 /Users/someuser/work/applications/frontend/node_modules:
   {"pollingInterval":500}
+/Users/someuser/work/applications/frontend/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/redux/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/app/utils/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/applications/frontend/src/package.json:
+  {"pollingInterval":2000}
 /Users/someuser/work/applications/frontend/types:
   {"pollingInterval":500}
+/Users/someuser/work/applications/package.json:
+  {"pollingInterval":2000}
+/Users/someuser/work/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /Users/someuser/work/applications/frontend/src/app/redux/configureStore.ts:
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-calling-goto-definition-of-module.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-calling-goto-definition-of-module.js
index 3c2a424e85a7e..a17f0ec9fc257 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-calling-goto-definition-of-module.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-calling-goto-definition-of-module.js
@@ -87,6 +87,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/models/vessel.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/utils/db.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/utils/package.json 2000 undefined Project: /a/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/models/package.json 2000 undefined Project: /a/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/controllers/vessels/package.json 2000 undefined Project: /a/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/controllers/package.json 2000 undefined Project: /a/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es6.d.ts 500 undefined Project: /a/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/tsconfig.json' (Configured)
@@ -250,6 +254,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/a/b/controllers/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/controllers/vessels/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/models/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/utils/package.json: *new*
+  {"pollingInterval":2000}
 /a/lib/lib.es6.d.ts: *new*
   {"pollingInterval":500}
 
@@ -350,6 +362,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/a/b/controllers/package.json:
+  {"pollingInterval":2000}
+/a/b/controllers/vessels/package.json:
+  {"pollingInterval":2000}
+/a/b/models/package.json:
+  {"pollingInterval":2000}
+/a/b/utils/package.json:
+  {"pollingInterval":2000}
 /a/lib/lib.es6.d.ts:
   {"pollingInterval":500}
 
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-creating-new-file-in-symlinked-folder.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-creating-new-file-in-symlinked-folder.js
index e1c75e9d7b79d..4781a0387c117 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-creating-new-file-in-symlinked-folder.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-creating-new-file-in-symlinked-folder.js
@@ -84,6 +84,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/folder1/module1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/folder1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/client/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/folder2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -183,10 +188,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/client/folder1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/client/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/folder2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -298,10 +313,20 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/client/folder1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/client/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/folder2/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-node_modules-dont-receive-event-for-the-@types-file-addition.js b/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-node_modules-dont-receive-event-for-the-@types-file-addition.js
index cd590115e67ab..beda44c1721ee 100644
--- a/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-node_modules-dont-receive-event-for-the-@types-file-addition.js
+++ b/tests/baselines/reference/tsserver/cachingFileSystemInformation/when-node_modules-dont-receive-event-for-the-@types-file-addition.js
@@ -60,6 +60,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/fo
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/node_modules 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/node_modules 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/folder/myproject/package.json 2000 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/folder/package.json 2000 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules/@types 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules/@types 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/node_modules/@types 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Type roots
@@ -156,10 +158,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/folder/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/folder/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/folder/node_modules: *new*
   {"pollingInterval":500}
 /user/username/folder/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/folder/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -221,10 +227,14 @@ export {}
 
 
 PolledWatches::
+/user/username/folder/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/folder/node_modules:
   {"pollingInterval":500}
 /user/username/folder/node_modules/@types:
   {"pollingInterval":500}
+/user/username/folder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/folder/myproject/node_modules:
@@ -262,6 +272,9 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/folder/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules/@types/debug/package.json 2000 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules/@types/package.json 2000 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/folder/myproject/node_modules/package.json 2000 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/folder/node_modules 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/folder/node_modules 1 undefined Project: /user/username/folder/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/folder/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -284,8 +297,18 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 After running Timeout callback:: count: 1
 
 PolledWatches::
+/user/username/folder/myproject/node_modules/@types/debug/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/folder/myproject/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/folder/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/folder/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/folder/node_modules/@types:
   {"pollingInterval":500}
+/user/username/folder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/folder/node_modules:
diff --git a/tests/baselines/reference/tsserver/codeFix/install-package-when-serialized.js b/tests/baselines/reference/tsserver/codeFix/install-package-when-serialized.js
index 53f8b10fc07b2..43eadf0e89a35 100644
--- a/tests/baselines/reference/tsserver/codeFix/install-package-when-serialized.js
+++ b/tests/baselines/reference/tsserver/codeFix/install-package-when-serialized.js
@@ -68,6 +68,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/src/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
@@ -164,8 +167,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/codeFix/install-package.js b/tests/baselines/reference/tsserver/codeFix/install-package.js
index a26de2d7ec39c..6a7d291cfcaba 100644
--- a/tests/baselines/reference/tsserver/codeFix/install-package.js
+++ b/tests/baselines/reference/tsserver/codeFix/install-package.js
@@ -68,6 +68,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/src/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
@@ -164,8 +167,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module-with-dts-emit.js b/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module-with-dts-emit.js
index 672b905cbb8cb..322900cf4f596 100644
--- a/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module-with-dts-emit.js
+++ b/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module-with-dts-emit.js
@@ -83,6 +83,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/module.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -188,8 +190,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -266,8 +272,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module.js b/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module.js
index 172614b308b9d..7b90f7c640f2a 100644
--- a/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module.js
+++ b/tests/baselines/reference/tsserver/compileOnSave/emit-in-project-with-module.js
@@ -83,6 +83,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/module.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -188,8 +190,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -266,8 +272,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/completions/works-when-files-are-included-from-two-different-drives-of-windows.js b/tests/baselines/reference/tsserver/completions/works-when-files-are-included-from-two-different-drives-of-windows.js
index d6f7d0a48f8b7..c88e5b7530c01 100644
--- a/tests/baselines/reference/tsserver/completions/works-when-files-are-included-from-two-different-drives-of-windows.js
+++ b/tests/baselines/reference/tsserver/completions/works-when-files-are-included-from-two-different-drives-of-windows.js
@@ -121,6 +121,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/typescript/node_modules/@types/react/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: e:/myproject/node_modules/react-router-dom/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/typescript/node_modules/@types/react-router-dom/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: e:/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: e:/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: e:/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: e:/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: e:/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -162,6 +164,8 @@ e:/myproject/src/node_modules: *new*
   {"pollingInterval":500}
 e:/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+e:/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 e:/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -178,6 +182,8 @@ e:/myproject/node_modules/@types/react/package.json: *new*
   {}
 e:/myproject/node_modules/react-router-dom/package.json: *new*
   {}
+e:/myproject/package.json: *new*
+  {}
 
 FsWatchesRecursive::
 c:/typescript/node_modules: *new*
@@ -364,6 +370,8 @@ e:/myproject/src/node_modules:
   {"pollingInterval":500}
 e:/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+e:/myproject/src/package.json:
+  {"pollingInterval":2000}
 e:/myproject/src/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -380,7 +388,7 @@ e:/myproject/node_modules/@types/react/package.json:
   {}
 e:/myproject/node_modules/react-router-dom/package.json:
   {}
-e:/myproject/package.json: *new*
+e:/myproject/package.json:
   {}
 
 FsWatchesRecursive::
diff --git a/tests/baselines/reference/tsserver/configuredProjects/changed-module-resolution-reflected-when-specifying-files-list.js b/tests/baselines/reference/tsserver/configuredProjects/changed-module-resolution-reflected-when-specifying-files-list.js
index 8871215cb37d6..149b4d3130d21 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/changed-module-resolution-reflected-when-specifying-files-list.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/changed-module-resolution-reflected-when-specifying-files-list.js
@@ -68,6 +68,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projec
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -167,8 +169,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -285,8 +291,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -359,8 +369,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js
index 9dde731c34959..285ff82ced3dd 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js
@@ -70,6 +70,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -167,8 +170,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -239,6 +248,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -284,20 +297,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one.js
index a2621e030789f..ae9d4ec0537e0 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-after-old-one.js
@@ -67,6 +67,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -164,8 +167,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -231,6 +240,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src/sub
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/sub/fooBar.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -265,6 +275,32 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/src/bar.ts:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *changed*
     projectStateVersion: 2
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js
index a336169d433ff..38cbce728d875 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js
@@ -70,6 +70,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -167,8 +170,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -239,6 +248,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -284,20 +297,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one.js
index 71909daa59569..aed4d6ce1487f 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-after-watcher-is-invoked,-ask-errors-on-it-before-old-one.js
@@ -67,6 +67,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -164,8 +167,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -231,6 +240,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src/sub
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/sub/fooBar.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -265,6 +275,32 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/src/bar.ts:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *changed*
     projectStateVersion: 2
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js
index 9bd71e1654cda..2b913e6e6fbcc 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one-without-file-being-in-config.js
@@ -70,6 +70,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -167,8 +170,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -233,6 +242,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -278,20 +291,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one.js
index 4f8792a7733c5..417527d887f1a 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-after-old-one.js
@@ -67,6 +67,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -164,8 +167,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -230,6 +239,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -275,20 +288,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -387,6 +408,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -421,12 +443,20 @@ After running Timeout callback:: count: 2
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js
index 6ff64b7971625..1958e854e4b6d 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one-without-file-being-in-config.js
@@ -70,6 +70,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -167,8 +170,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -233,6 +242,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -278,20 +291,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one.js b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one.js
index 2f4eca17340c2..3c91fb972a4ae 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/creating-new-file-and-then-open-it-before-watcher-is-invoked,-ask-errors-on-it-before-old-one.js
@@ -67,6 +67,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/bar.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -164,8 +167,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -230,6 +239,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -275,20 +288,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -446,6 +467,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/sub/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -480,12 +502,20 @@ After running Timeout callback:: count: 2
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/sub/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/sub/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/failed-lookup-locations-uses-parent-most-node_modules-directory.js b/tests/baselines/reference/tsserver/configuredProjects/failed-lookup-locations-uses-parent-most-node_modules-directory.js
index 9ce92403b3fa2..3664514c90a8a 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/failed-lookup-locations-uses-parent-most-node_modules-directory.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/failed-lookup-locations-uses-parent-most-node_modules-directory.js
@@ -74,6 +74,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/ro
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/src/node_modules 1 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/node_modules 1 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/node_modules 1 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/node_modules/module1/package.json 2000 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/node_modules/package.json 2000 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/package.json 2000 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/package.json 2000 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/package.json 2000 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/src/package.json 2000 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/src/node_modules/@types 1 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/src/node_modules/@types 1 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/a/b/node_modules/@types 1 undefined Project: /user/username/rootfolder/a/b/src/tsconfig.json WatchType: Type roots
@@ -178,14 +184,26 @@ After request
 PolledWatches::
 /user/username/rootfolder/a/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/a/b/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/a/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/a/b/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/rootfolder/a/b/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/a/b/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/configuredProjects/open-file-become-a-part-of-configured-project-if-it-is-referenced-from-root-file.js b/tests/baselines/reference/tsserver/configuredProjects/open-file-become-a-part-of-configured-project-if-it-is-referenced-from-root-file.js
index c4fb05cedfea4..79d60107ec831 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/open-file-become-a-part-of-configured-project-if-it-is-referenced-from-root-file.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/open-file-become-a-part-of-configured-project-if-it-is-referenced-from-root-file.js
@@ -29,6 +29,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/b/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/b/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/b/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -68,22 +72,30 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/b/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/inferredProject1* (Inferred) *new*
@@ -112,6 +124,10 @@ Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/a/c/f3.ts :
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject2* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -157,28 +173,38 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/b/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/c/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/c/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/inferredProject1* (Inferred)
@@ -231,26 +257,36 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/b/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/c/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/a/c/tsconfig.json:
@@ -300,6 +336,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/a/c/tsconfig.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/f2.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/c/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/a/c/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/package.json 2000 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/c/tsconfig.json WatchType: Type roots
@@ -458,6 +499,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/b/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
@@ -467,6 +512,10 @@ Info seq  [hh:mm:ss:mss] 	Files (0)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/c/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject2* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
@@ -513,14 +562,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/a/b/jsconfig.json:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/should-be-able-to-handle-@types-if-input-file-list-is-empty.js b/tests/baselines/reference/tsserver/configuredProjects/should-be-able-to-handle-@types-if-input-file-list-is-empty.js
index e20885fa013e1..56a31705d9754 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/should-be-able-to-handle-@types-if-input-file-list-is-empty.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/should-be-able-to-handle-@types-if-input-file-list-is-empty.js
@@ -131,6 +131,8 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/node_modules/@types/typings/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
@@ -168,6 +170,10 @@ After request
 PolledWatches::
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
+/a/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/node_modules/@types/typings/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/configuredProjects/should-properly-handle-module-resolution-changes-in-config-file.js b/tests/baselines/reference/tsserver/configuredProjects/should-properly-handle-module-resolution-changes-in-config-file.js
index 127639eb8ac09..7ff95af491e26 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/should-properly-handle-module-resolution-changes-in-config-file.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/should-properly-handle-module-resolution-changes-in-config-file.js
@@ -59,6 +59,7 @@ Info seq  [hh:mm:ss:mss] Config: /a/b/tsconfig.json : {
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/package.json 2000 undefined Project: /a/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /a/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/tsconfig.json' (Configured)
@@ -196,6 +197,8 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
 
@@ -253,6 +256,8 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
 
@@ -396,6 +401,7 @@ Info seq  [hh:mm:ss:mss] Config: /a/b/tsconfig.json : {
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/b/node_modules/package.json 2000 undefined Project: /a/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -493,6 +499,7 @@ Info seq  [hh:mm:ss:mss] 		Projects:
 Info seq  [hh:mm:ss:mss] 	FileName: /a/module1.ts ProjectRootPath: undefined
 Info seq  [hh:mm:ss:mss] 		Projects: /dev/null/inferredProject1*,/a/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject2* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -554,9 +561,15 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /a/b/node_modules/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000} *new*
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
 
+PolledWatches *deleted*::
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/b/tsconfig.json:
   {}
diff --git a/tests/baselines/reference/tsserver/configuredProjects/when-default-configured-project-does-not-contain-the-file.js b/tests/baselines/reference/tsserver/configuredProjects/when-default-configured-project-does-not-contain-the-file.js
index a853fa0bf729e..bb630577e2635 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/when-default-configured-project-does-not-contain-the-file.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/when-default-configured-project-does-not-contain-the-file.js
@@ -92,6 +92,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/lib/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/lib/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/node_modules/@types 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/node_modules/@types 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Type roots
@@ -191,10 +196,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/bar/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/foo/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/foo/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -267,6 +282,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/foobar/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo 1 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo 1 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/lib/package.json 2000 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/package.json 2000 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foobar/package.json 2000 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foobar/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foobar/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foobar/tsconfig.json WatchType: Type roots
@@ -597,12 +617,24 @@ After request
 PolledWatches::
 /user/username/projects/myproject/bar/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/bar/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/foo/lib/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/foo/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foobar/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/foobar/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -686,6 +718,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/foo/tsconfig.
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/foo/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Type roots
@@ -797,14 +832,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/bar/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/bar/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/foo/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foo/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/foo/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foobar/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/foobar/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -906,14 +953,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/bar/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/bar/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/foo/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foo/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/foo/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foobar/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/foobar/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/configuredProjects/when-multiple-projects-are-open-detects-correct-default-project.js b/tests/baselines/reference/tsserver/configuredProjects/when-multiple-projects-are-open-detects-correct-default-project.js
index b53dbe3362a65..02e84129cbd27 100644
--- a/tests/baselines/reference/tsserver/configuredProjects/when-multiple-projects-are-open-detects-correct-default-project.js
+++ b/tests/baselines/reference/tsserver/configuredProjects/when-multiple-projects-are-open-detects-correct-default-project.js
@@ -103,6 +103,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2017.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/node_modules/bar 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/node_modules/bar 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/package.json 2000 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/foo/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/foo/tsconfig.json WatchType: Type roots
@@ -204,16 +208,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/bar/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foo/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/foo/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2017.d.ts: *new*
@@ -294,6 +306,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.dom.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/node_modules/@types 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/bar/node_modules/@types 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/bar/tsconfig.json WatchType: Type roots
@@ -406,16 +421,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/bar/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/bar/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/foo/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/foo/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules:
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.dom.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan,-and-orphan-script-info-changes.js b/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan,-and-orphan-script-info-changes.js
index 7b93f7d0b3897..2c31bc1913d76 100644
--- a/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan,-and-orphan-script-info-changes.js
+++ b/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan,-and-orphan-script-info-changes.js
@@ -64,6 +64,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/module1.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -161,8 +163,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -194,7 +200,7 @@ ScriptInfos::
         /user/username/projects/myproject/tsconfig.json
 
 DocumentRegistry::
-  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined
+  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined|1
     /user/username/projects/myproject/index.ts: TS 1
     /user/username/projects/myproject/module1.d.ts: TS 1
     /a/lib/lib.d.ts: TS 1
@@ -241,6 +247,8 @@ ScriptInfos::
         /user/username/projects/myproject/tsconfig.json
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -255,7 +263,7 @@ Info seq  [hh:mm:ss:mss] 	Files (2)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 DocumentRegistry::
-  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined
+  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined|1
     /user/username/projects/myproject/index.ts: TS 1
     /a/lib/lib.d.ts: TS 1
 Info seq  [hh:mm:ss:mss] FileWatcher:: Triggered with /user/username/projects/myproject/module1.d.ts 1:: WatchInfo: /user/username/projects/myproject/module1.d.ts 500 undefined WatchType: Closed Script info
@@ -266,6 +274,28 @@ export const a: number;
 export const b: number;
 
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject:
+  {}
+/user/username/projects/myproject/module1.d.ts:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *changed*
     projectStateVersion: 2
@@ -328,6 +358,8 @@ ScriptInfos::
     containingProjects: 0
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -345,7 +377,7 @@ Info seq  [hh:mm:ss:mss] 	Files (3)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 DocumentRegistry::
-  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined
+  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined|1
     /user/username/projects/myproject/index.ts: TS 1
     /a/lib/lib.d.ts: TS 1
     /user/username/projects/myproject/module1.d.ts: TS 1
\ No newline at end of file
diff --git a/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan.js b/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan.js
index e183914ba1ce5..10c20061fafef 100644
--- a/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan.js
+++ b/tests/baselines/reference/tsserver/documentRegistry/Caches-the-source-file-if-script-info-is-orphan.js
@@ -64,6 +64,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/module1.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -161,8 +163,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -194,7 +200,7 @@ ScriptInfos::
         /user/username/projects/myproject/tsconfig.json
 
 DocumentRegistry::
-  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined
+  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined|1
     /user/username/projects/myproject/index.ts: TS 1
     /user/username/projects/myproject/module1.d.ts: TS 1
     /a/lib/lib.d.ts: TS 1
@@ -241,6 +247,8 @@ ScriptInfos::
         /user/username/projects/myproject/tsconfig.json
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -255,11 +263,33 @@ Info seq  [hh:mm:ss:mss] 	Files (2)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 DocumentRegistry::
-  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined
+  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined|1
     /user/username/projects/myproject/index.ts: TS 1
     /a/lib/lib.d.ts: TS 1
 Before request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject:
+  {}
+/user/username/projects/myproject/module1.d.ts:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *changed*
     projectStateVersion: 2
@@ -320,6 +350,8 @@ ScriptInfos::
     containingProjects: 0
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -337,7 +369,7 @@ Info seq  [hh:mm:ss:mss] 	Files (3)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 DocumentRegistry::
-  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined
+  Key:: undefined|undefined|undefined|false|undefined|undefined|undefined|undefined|undefined|undefined|1
     /user/username/projects/myproject/index.ts: TS 1
     /a/lib/lib.d.ts: TS 1
     /user/username/projects/myproject/module1.d.ts: TS 1
\ No newline at end of file
diff --git a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-module-resolution.js b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-module-resolution.js
index ad306860d5050..55c4dbb4a7784 100644
--- a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-module-resolution.js
+++ b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-module-resolution.js
@@ -55,6 +55,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -95,18 +98,24 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/large: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-tsconfig.js b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-tsconfig.js
index a2fee4d76a434..38e46e5573621 100644
--- a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-tsconfig.js
+++ b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-js-file-is-included-by-tsconfig.js
@@ -81,6 +81,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -200,8 +203,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-module-resolution.js b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-module-resolution.js
index 41cd4d2d71830..b904e7f691e1e 100644
--- a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-module-resolution.js
+++ b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-module-resolution.js
@@ -39,6 +39,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/large.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -79,16 +82,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-tsconfig.js b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-tsconfig.js
index c80884b7b9cba..fb0b0cd829341 100644
--- a/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-tsconfig.js
+++ b/tests/baselines/reference/tsserver/events/largeFileReferenced/when-large-ts-file-is-included-by-tsconfig.js
@@ -69,6 +69,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/large.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -183,8 +186,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-default-event-handler.js
index 55970e407aaf9..1b0a466cd9dca 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-default-event-handler.js
@@ -65,6 +65,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b 1 undefined Config: /user/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -159,8 +161,12 @@ After request
 PolledWatches::
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-event-handler.js
index 1dbdf5e2f36ad..653cfe4d88e7c 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-an-extended-config-file-when-using-event-handler.js
@@ -65,6 +65,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b 1 undefined Config: /user/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -156,8 +158,12 @@ After request
 PolledWatches::
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-default-event-handler.js
index 2fe80522fbe2a..4151eb743446c 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-default-event-handler.js
@@ -56,6 +56,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -150,8 +152,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-event-handler.js
index e29495744baec..cf2f2a0945acd 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/change-is-detected-in-the-config-file-when-using-event-handler.js
@@ -56,6 +56,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -147,8 +149,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-default-event-handler.js
index c1a1d6b93ae2a..36ac6d64a6957 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-default-event-handler.js
@@ -127,6 +127,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -225,8 +227,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-event-handler.js
index 3b26a464b8055..1b750a649fa81 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-disabled-when-using-event-handler.js
@@ -127,6 +127,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -222,8 +224,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-default-event-handler.js
index bca5d4a99b21d..24b490eba9617 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-default-event-handler.js
@@ -91,6 +91,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -173,8 +175,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-event-handler.js
index fa89c67f1dce9..5240416e86adb 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-false-when-using-event-handler.js
@@ -91,6 +91,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -170,8 +172,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-default-event-handler.js
index f63fc92caaefa..dd9833c671e25 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-default-event-handler.js
@@ -126,6 +126,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -220,8 +222,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-event-handler.js
index 8b32c93c01c1c..094cc52d52f52 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/lazyConfiguredProjectsFromExternalProject-is-true-and-file-is-opened-when-using-event-handler.js
@@ -126,6 +126,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -217,8 +219,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-default-event-handler.js
index acf445f81855c..abc996c701124 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-default-event-handler.js
@@ -108,6 +108,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -221,10 +224,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -291,6 +300,8 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -432,10 +443,16 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-event-handler.js
index 6d550e9969e54..69e50b8227dcc 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-disableSourceOfProjectReferenceRedirect-when-using-event-handler.js
@@ -108,6 +108,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -218,10 +221,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -288,6 +297,8 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -426,10 +437,16 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-default-event-handler.js
index 42276c593fd66..2f1c2a162b5a2 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-default-event-handler.js
@@ -104,6 +104,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -214,10 +217,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -282,6 +291,8 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -423,10 +434,16 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-event-handler.js
index 2d1a6821554c8..a1d651141daf7 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/opening-original-location-project-when-using-event-handler.js
@@ -104,6 +104,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -211,10 +214,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -279,6 +288,8 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -417,10 +428,16 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-default-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-default-event-handler.js
index 537064baf5381..f1dfb4d0366d0 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-default-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-default-event-handler.js
@@ -62,6 +62,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -156,8 +158,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -220,6 +226,8 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/b/tsconfig.json : {
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b 1 undefined Config: /user/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b 1 undefined Config: /user/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/b/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -320,10 +328,16 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-event-handler.js b/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-event-handler.js
index 13e2aced39c90..3d05f83f1d37f 100644
--- a/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-event-handler.js
+++ b/tests/baselines/reference/tsserver/events/projectLoading/project-is-created-by-open-file-when-using-event-handler.js
@@ -62,6 +62,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a 1 undefined Config: /user/username/projects/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/a/tsconfig.json WatchType: Type roots
@@ -153,8 +155,12 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -217,6 +223,8 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/b/tsconfig.json : {
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b 1 undefined Config: /user/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b 1 undefined Config: /user/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/b/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/b/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/b/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/b/tsconfig.json WatchType: Type roots
@@ -314,10 +322,16 @@ After request
 PolledWatches::
 /user/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-at-root-level.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-at-root-level.js
index 597e7603638d5..b46a0785a5e3a 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-at-root-level.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-at-root-level.js
@@ -68,6 +68,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/project/tscon
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/project/node_modules 1 undefined Project: /a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/project/node_modules 1 undefined Project: /a/b/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/project/package.json 2000 undefined Project: /a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -160,6 +161,8 @@ After request
 PolledWatches::
 /a/b/project/node_modules: *new*
   {"pollingInterval":500}
+/a/b/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/project/file3.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-not-at-root-level.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-not-at-root-level.js
index 8e5a70381907d..18d143df746c2 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-not-at-root-level.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-project-is-not-at-root-level.js
@@ -76,6 +76,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/ro
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/project/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/rootfolder/otherfolder/a/b/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -170,12 +175,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/rootfolder/otherfolder/a/b/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -323,12 +338,22 @@ export class a { }
 PolledWatches::
 /user/username/rootfolder/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/rootfolder/otherfolder/a/b/node_modules:
@@ -374,6 +399,7 @@ Info seq  [hh:mm:ss:mss] Running: /user/username/rootfolder/otherfolder/a/b/proj
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
@@ -430,8 +456,20 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/rootfolder/otherfolder/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/a/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/rootfolder/node_modules:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
index cad969d4e6bd1..cec041bc9f6d4 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
@@ -51,6 +51,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -190,10 +192,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -282,10 +288,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -401,8 +411,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
index deb68d9a92318..84727e149989f 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
@@ -51,6 +51,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -191,8 +193,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -281,8 +287,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -396,8 +406,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-deleted-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-deleted-files.js
index 11a9ab0730cc3..c4875561bc1c1 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-deleted-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-deleted-files.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -183,10 +185,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -275,10 +281,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -406,8 +416,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-newly-created-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-newly-created-files.js
index 221a7539b9a2a..0b8214f4c0447 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-newly-created-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-newly-created-files.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -183,10 +185,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -275,10 +281,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -418,8 +428,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-the-reference-map-changes.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-the-reference-map-changes.js
index abbc142b1d3d3..d5c8e6cea9ce7 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-the-reference-map-changes.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-be-up-to-date-with-the-reference-map-changes.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -183,10 +185,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -275,10 +281,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -414,10 +424,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -745,8 +759,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-contains-only-itself.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-contains-only-itself.js
index f96c1134fa948..6795023c79a0e 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-contains-only-itself.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-contains-only-itself.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -183,10 +185,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -275,10 +281,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -394,8 +404,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-changes-in-non-root-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-changes-in-non-root-files.js
index cfd66f00602d9..245fd655041f2 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-changes-in-non-root-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-changes-in-non-root-files.js
@@ -48,6 +48,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -257,10 +263,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -358,8 +368,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-non-existing-code-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-non-existing-code-file.js
index f177e19945340..97385b0d9ea3c 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-non-existing-code-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-non-existing-code-file.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile2.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -182,10 +184,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -229,10 +235,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -335,10 +345,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -385,8 +399,12 @@ export var Foo4 = 10;
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile2.ts:
@@ -465,8 +483,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-removed-code-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-removed-code-file.js
index ad20684e2f7b4..ce811af5fd5b6 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-removed-code-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-detect-removed-code-file.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -182,10 +184,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -244,8 +250,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -321,10 +331,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-all-files-if-a-global-file-changed-shape.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-all-files-if-a-global-file-changed-shape.js
index a8533414125af..8d30ee0d7bf4b 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-all-files-if-a-global-file-changed-shape.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-all-files-if-a-global-file-changed-shape.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -183,10 +185,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -275,10 +281,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -394,8 +404,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-cascaded-affected-file-list.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-cascaded-affected-file-list.js
index e6b41a06c332d..288b8083a74ab 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-cascaded-affected-file-list.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-return-cascaded-affected-file-list.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -183,10 +185,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -285,10 +291,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -434,8 +444,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-work-fine-for-files-with-circular-references.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-work-fine-for-files-with-circular-references.js
index ed888ec89db02..51269acd81468 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-work-fine-for-files-with-circular-references.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-should-work-fine-for-files-with-circular-references.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/file2.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -182,10 +184,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/file2.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -245,8 +251,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -327,8 +337,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when---outFile-is-set.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when---outFile-is-set.js
index dc35f6a749ccb..c0d348d61ff5c 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when---outFile-is-set.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when---outFile-is-set.js
@@ -61,6 +61,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -154,8 +156,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -255,8 +261,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-adding-new-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-adding-new-file.js
index d924d419a9439..61b40d0b9df2a 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-adding-new-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-adding-new-file.js
@@ -56,6 +56,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -147,8 +149,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -248,8 +254,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -359,8 +369,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-both-options-are-not-set.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-both-options-are-not-set.js
index d3a3301ae247e..7095d1f733e74 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-both-options-are-not-set.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/when-event-handler-is-set-in-the-session-and-when-both-options-are-not-set.js
@@ -58,6 +58,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -149,8 +151,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -250,8 +256,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js
index c2237fbb3d80b..82089d2d520cd 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js
@@ -68,6 +68,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/project/tscon
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/project/node_modules 1 undefined Project: /a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/project/node_modules 1 undefined Project: /a/b/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/project/package.json 2000 undefined Project: /a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -163,6 +164,8 @@ After request
 PolledWatches::
 /a/b/project/node_modules: *new*
   {"pollingInterval":500}
+/a/b/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/project/file3.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js
index 7ba23bbf53960..f98c68e3295a5 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js
@@ -76,6 +76,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/ro
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/project/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/rootfolder/otherfolder/a/b/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -173,12 +178,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/rootfolder/otherfolder/a/b/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -327,12 +342,22 @@ export class a { }
 PolledWatches::
 /user/username/rootfolder/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/rootfolder/otherfolder/a/b/node_modules:
@@ -378,6 +403,7 @@ Info seq  [hh:mm:ss:mss] Running: /user/username/rootfolder/otherfolder/a/b/proj
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
@@ -435,8 +461,20 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/rootfolder/otherfolder/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/a/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/rootfolder/node_modules:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
index 22267bcce60d1..b5189926b9d4a 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
@@ -51,6 +51,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -193,10 +195,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -285,10 +291,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -405,8 +415,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
index 6257cac900466..e0547faa1abad 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
@@ -51,6 +51,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -194,8 +196,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -284,8 +290,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -400,8 +410,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js
index 0a0c8770c893f..cc6bbf6516c0d 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -410,8 +420,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js
index 30c1cedb515a0..2e78c94f7ced7 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -422,8 +432,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js
index 8b221395a9859..d990de8f9a0f4 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -418,10 +428,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -751,8 +765,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js
index b0dc743170c1f..83115073bd8cc 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -398,8 +408,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js
index 5b62d8147eff6..2c3f775d801e8 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js
@@ -48,6 +48,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -188,10 +190,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -260,10 +266,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -362,8 +372,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js
index 39854d0be20ee..718c5ee693add 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile2.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -232,10 +238,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -339,10 +349,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -389,8 +403,12 @@ export var Foo4 = 10;
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile2.ts:
@@ -470,8 +488,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js
index 4f8f25692010c..266a23a19a713 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -247,8 +253,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -325,10 +335,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js
index f76fc77dc12d3..9a3f8f81b9393 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -398,8 +408,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js
index 6235724aa7671..0b3a1ed3d4151 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -288,10 +294,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -438,8 +448,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js
index 1d3ce5f876da4..2cbc49569e993 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/file2.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/file2.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -248,8 +254,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -331,8 +341,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js
index 2527a0abcc236..89c9ffd72f943 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js
@@ -61,6 +61,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -157,8 +159,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -259,8 +265,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js
index b5d0357569315..c417d9d33d504 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js
@@ -56,6 +56,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -150,8 +152,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -252,8 +258,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -364,8 +374,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js
index 515b2251ee9a4..1d1fee7fe8446 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/with-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js
@@ -58,6 +58,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -152,8 +154,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -254,8 +260,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js
index 5782d0f639054..44e0ac4be97fa 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-at-root-level.js
@@ -68,6 +68,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/project/tscon
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/project/node_modules 1 undefined Project: /a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/project/node_modules 1 undefined Project: /a/b/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/project/package.json 2000 undefined Project: /a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -163,6 +164,8 @@ After request
 PolledWatches::
 /a/b/project/node_modules: *new*
   {"pollingInterval":500}
+/a/b/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/project/file3.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js
index 66d6ca55238ac..e34e401509603 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-project-is-not-at-root-level.js
@@ -76,6 +76,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/ro
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/project/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/rootfolder/otherfolder/a/b/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -173,12 +178,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/rootfolder/otherfolder/a/b/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/node_modules: *new*
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -332,12 +347,22 @@ export class a { }
 PolledWatches::
 /user/username/rootfolder/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/rootfolder/otherfolder/a/b/node_modules:
@@ -365,6 +390,7 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/rootfolder/otherfolder/a/b/node_modules/package.json 2000 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/a/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/rootfolder/otherfolder/node_modules 1 undefined Project: /user/username/rootfolder/otherfolder/a/b/project/tsconfig.json WatchType: Failed Lookup Locations
@@ -403,8 +429,20 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 1
 
 PolledWatches::
+/user/username/rootfolder/otherfolder/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/rootfolder/otherfolder/a/b/project/node_modules:
   {"pollingInterval":500}
+/user/username/rootfolder/otherfolder/a/b/project/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/a/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/otherfolder/package.json:
+  {"pollingInterval":2000}
+/user/username/rootfolder/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/rootfolder/node_modules:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
index 21c4de3770055..60e35386e3b9e 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---isolatedModules-is-specified.js
@@ -51,6 +51,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -193,10 +195,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -285,10 +291,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -406,8 +416,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
index 3f0e602e47663..7ffcf311fbddf 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-always-return-the-file-itself-if---out-or---outFile-is-specified.js
@@ -51,6 +51,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -194,8 +196,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -284,8 +290,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -401,8 +411,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js
index 456281ad264da..23838b05699fb 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-deleted-files.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -411,8 +421,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js
index d79f611debc9d..61763e02f163b 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-newly-created-files.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -423,8 +433,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js
index 0b219cb647712..4944c3b12b843 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-be-up-to-date-with-the-reference-map-changes.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -419,10 +429,14 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -775,8 +789,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js
index 9762dfd1d27b1..17ef78655b479 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-contains-only-itself.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -399,8 +409,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js
index f938b8a350577..a9300765205ff 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-changes-in-non-root-files.js
@@ -48,6 +48,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -188,10 +190,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -260,10 +266,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -363,8 +373,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js
index cc4005ccc09d3..157976873d0e6 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-non-existing-code-file.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile2.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -232,10 +238,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -340,10 +350,14 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile2.ts:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -394,8 +408,12 @@ export var Foo4 = 10;
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile2.ts:
@@ -487,8 +505,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js
index 3798d054b0463..68ed5fd3a54c2 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-detect-removed-code-file.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -247,8 +253,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -326,10 +336,14 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js
index 86455e4328dbc..f15530a386228 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-all-files-if-a-global-file-changed-shape.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -278,10 +284,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -399,8 +409,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js
index 894555e9c808f..f4d4a1be5b21d 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-return-cascaded-affected-file-list.js
@@ -46,6 +46,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile1 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -186,10 +188,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -288,10 +294,14 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile1:
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -439,8 +449,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile1:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js
index 181dca53ee737..114843d472d7b 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-should-work-fine-for-files-with-circular-references.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/file2.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -185,10 +187,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/file2.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -248,8 +254,12 @@ interface Array<T> { length: number; [n: number]: T; }
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/lib/lib.d.ts:
@@ -332,8 +342,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js
index 139b598418a59..dedadbf6038e6 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when---outFile-is-set.js
@@ -61,6 +61,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -157,8 +159,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -260,8 +266,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js
index fd349ec4b1a05..c1f01d86cc165 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-adding-new-file.js
@@ -56,6 +56,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -150,8 +152,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,8 +259,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -381,8 +391,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js
index 7840a74145d59..20c0ec2dc6b05 100644
--- a/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js
+++ b/tests/baselines/reference/tsserver/events/projectUpdatedInBackground/without-noGetErrOnBackgroundUpdate-and-when-both-options-are-not-set.js
@@ -58,6 +58,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -152,8 +154,12 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -255,8 +261,12 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-on-windows.js b/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-on-windows.js
index 90983324af87f..c818b71f98fc9 100644
--- a/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-on-windows.js
+++ b/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-on-windows.js
@@ -142,6 +142,54 @@ Info seq  [hh:mm:ss:mss] event:
 Custom watchFile: 6: c:/a/lib/lib.d.ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/projects/myproject/node_modules 1 undefined Project: c:/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/projects/myproject/node_modules 1 undefined Project: c:/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/projects/myproject/package.json 2000 undefined Project: c:/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 7,
+        "path": "c:/projects/myproject/package.json"
+      }
+    }
+Custom watchFile: 7: c:/projects/myproject/package.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/projects/package.json 2000 undefined Project: c:/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 8,
+        "path": "c:/projects/package.json"
+      }
+    }
+Custom watchFile: 8: c:/projects/package.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/projects/myproject/node_modules/something/package.json 2000 undefined Project: c:/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 9,
+        "path": "c:/projects/myproject/node_modules/something/package.json"
+      }
+    }
+Custom watchFile: 9: c:/projects/myproject/node_modules/something/package.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/projects/myproject/node_modules/package.json 2000 undefined Project: c:/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 10,
+        "path": "c:/projects/myproject/node_modules/package.json"
+      }
+    }
+Custom watchFile: 10: c:/projects/myproject/node_modules/package.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/projects/myproject/node_modules/@types 1 undefined Project: c:/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] event:
     {
@@ -149,13 +197,13 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createDirectoryWatcher",
       "body": {
-        "id": 7,
+        "id": 11,
         "path": "c:/projects/myproject/node_modules/@types",
         "recursive": true,
         "ignoreUpdate": true
       }
     }
-Custom watchDirectory: 7: c:/projects/myproject/node_modules/@types true true
+Custom watchDirectory: 11: c:/projects/myproject/node_modules/@types true true
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/projects/myproject/node_modules/@types 1 undefined Project: c:/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/projects/node_modules/@types 1 undefined Project: c:/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] event:
@@ -164,13 +212,13 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createDirectoryWatcher",
       "body": {
-        "id": 8,
+        "id": 12,
         "path": "c:/projects/node_modules/@types",
         "recursive": true,
         "ignoreUpdate": true
       }
     }
-Custom watchDirectory: 8: c:/projects/node_modules/@types true true
+Custom watchDirectory: 12: c:/projects/node_modules/@types true true
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/projects/node_modules/@types 1 undefined Project: c:/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: c:/projects/myproject/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project 'c:/projects/myproject/tsconfig.json' (Configured)
@@ -272,8 +320,16 @@ c:/projects/myproject/b.ts: *new*
   {"id":3,"path":"c:/projects/myproject/b.ts"}
 c:/projects/myproject/m.ts: *new*
   {"id":4,"path":"c:/projects/myproject/m.ts"}
+c:/projects/myproject/node_modules/package.json: *new*
+  {"id":10,"path":"c:/projects/myproject/node_modules/package.json"}
+c:/projects/myproject/node_modules/something/package.json: *new*
+  {"id":9,"path":"c:/projects/myproject/node_modules/something/package.json"}
+c:/projects/myproject/package.json: *new*
+  {"id":7,"path":"c:/projects/myproject/package.json"}
 c:/projects/myproject/tsconfig.json: *new*
   {"id":1,"path":"c:/projects/myproject/tsconfig.json"}
+c:/projects/package.json: *new*
+  {"id":8,"path":"c:/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 c:/projects/myproject: *new*
@@ -281,9 +337,9 @@ c:/projects/myproject: *new*
 c:/projects/myproject/node_modules: *new*
   {"id":5,"path":"c:/projects/myproject/node_modules","recursive":true}
 c:/projects/myproject/node_modules/@types: *new*
-  {"id":7,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 c:/projects/node_modules/@types: *new*
-  {"id":8,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 Projects::
 c:/projects/myproject/tsconfig.json (Configured) *new*
@@ -367,11 +423,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 9,
+        "id": 13,
         "path": "c:/projects/myproject/c.ts"
       }
     }
-Custom watchFile: 9: c:/projects/myproject/c.ts
+Custom watchFile: 13: c:/projects/myproject/c.ts
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: c:/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: c:/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project 'c:/projects/myproject/tsconfig.json' (Configured)
@@ -434,11 +490,19 @@ c:/a/lib/lib.d.ts:
 c:/projects/myproject/b.ts:
   {"id":3,"path":"c:/projects/myproject/b.ts"}
 c:/projects/myproject/c.ts: *new*
-  {"id":9,"path":"c:/projects/myproject/c.ts"}
+  {"id":13,"path":"c:/projects/myproject/c.ts"}
 c:/projects/myproject/m.ts:
   {"id":4,"path":"c:/projects/myproject/m.ts"}
+c:/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"c:/projects/myproject/node_modules/package.json"}
+c:/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"c:/projects/myproject/node_modules/something/package.json"}
+c:/projects/myproject/package.json:
+  {"id":7,"path":"c:/projects/myproject/package.json"}
 c:/projects/myproject/tsconfig.json:
   {"id":1,"path":"c:/projects/myproject/tsconfig.json"}
+c:/projects/package.json:
+  {"id":8,"path":"c:/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 c:/projects/myproject:
@@ -446,9 +510,9 @@ c:/projects/myproject:
 c:/projects/myproject/node_modules:
   {"id":5,"path":"c:/projects/myproject/node_modules","recursive":true}
 c:/projects/myproject/node_modules/@types:
-  {"id":7,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 c:/projects/node_modules/@types:
-  {"id":8,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 Projects::
 c:/projects/myproject/tsconfig.json (Configured) *changed*
@@ -676,11 +740,19 @@ Custom WatchedFiles::
 c:/a/lib/lib.d.ts:
   {"id":6,"path":"c:/a/lib/lib.d.ts"}
 c:/projects/myproject/c.ts:
-  {"id":9,"path":"c:/projects/myproject/c.ts"}
+  {"id":13,"path":"c:/projects/myproject/c.ts"}
 c:/projects/myproject/m.ts:
   {"id":4,"path":"c:/projects/myproject/m.ts"}
+c:/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"c:/projects/myproject/node_modules/package.json"}
+c:/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"c:/projects/myproject/node_modules/something/package.json"}
+c:/projects/myproject/package.json:
+  {"id":7,"path":"c:/projects/myproject/package.json"}
 c:/projects/myproject/tsconfig.json:
   {"id":1,"path":"c:/projects/myproject/tsconfig.json"}
+c:/projects/package.json:
+  {"id":8,"path":"c:/projects/package.json"}
 
 Custom WatchedFiles *deleted*::
 c:/projects/myproject/b.ts:
@@ -692,9 +764,9 @@ c:/projects/myproject:
 c:/projects/myproject/node_modules:
   {"id":5,"path":"c:/projects/myproject/node_modules","recursive":true}
 c:/projects/myproject/node_modules/@types:
-  {"id":7,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 c:/projects/node_modules/@types:
-  {"id":8,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 ScriptInfos::
 c:/a/lib/lib.d.ts
@@ -741,11 +813,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 10,
+        "id": 14,
         "path": "c:/projects/myproject/b.ts"
       }
     }
-Custom watchFile: 10: c:/projects/myproject/b.ts
+Custom watchFile: 14: c:/projects/myproject/b.ts
 Info seq  [hh:mm:ss:mss] Project 'c:/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
 
@@ -763,13 +835,21 @@ Custom WatchedFiles::
 c:/a/lib/lib.d.ts:
   {"id":6,"path":"c:/a/lib/lib.d.ts"}
 c:/projects/myproject/b.ts: *new*
-  {"id":10,"path":"c:/projects/myproject/b.ts"}
+  {"id":14,"path":"c:/projects/myproject/b.ts"}
 c:/projects/myproject/c.ts:
-  {"id":9,"path":"c:/projects/myproject/c.ts"}
+  {"id":13,"path":"c:/projects/myproject/c.ts"}
 c:/projects/myproject/m.ts:
   {"id":4,"path":"c:/projects/myproject/m.ts"}
+c:/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"c:/projects/myproject/node_modules/package.json"}
+c:/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"c:/projects/myproject/node_modules/something/package.json"}
+c:/projects/myproject/package.json:
+  {"id":7,"path":"c:/projects/myproject/package.json"}
 c:/projects/myproject/tsconfig.json:
   {"id":1,"path":"c:/projects/myproject/tsconfig.json"}
+c:/projects/package.json:
+  {"id":8,"path":"c:/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 c:/projects/myproject:
@@ -777,9 +857,9 @@ c:/projects/myproject:
 c:/projects/myproject/node_modules:
   {"id":5,"path":"c:/projects/myproject/node_modules","recursive":true}
 c:/projects/myproject/node_modules/@types:
-  {"id":7,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 c:/projects/node_modules/@types:
-  {"id":8,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 ScriptInfos::
 c:/a/lib/lib.d.ts
@@ -824,7 +904,7 @@ Info seq  [hh:mm:ss:mss] request:
     {
       "command": "watchChange",
       "arguments": {
-        "id": 9,
+        "id": 13,
         "updated": [
           "c:\\projects\\myproject\\b.ts"
         ]
@@ -1167,7 +1247,7 @@ Info seq  [hh:mm:ss:mss] request:
           ]
         },
         {
-          "id": 9,
+          "id": 13,
           "updated": [
             "c:\\projects\\myproject\\c.ts"
           ]
@@ -1243,11 +1323,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 11,
+        "id": 15,
         "path": "c:/projects/myproject/d.ts"
       }
     }
-Custom watchFile: 11: c:/projects/myproject/d.ts
+Custom watchFile: 15: c:/projects/myproject/d.ts
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/projects/myproject/e.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] event:
     {
@@ -1255,11 +1335,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 12,
+        "id": 16,
         "path": "c:/projects/myproject/e.ts"
       }
     }
-Custom watchFile: 12: c:/projects/myproject/e.ts
+Custom watchFile: 16: c:/projects/myproject/e.ts
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: c:/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: c:/projects/myproject/tsconfig.json projectStateVersion: 6 projectProgramVersion: 3 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project 'c:/projects/myproject/tsconfig.json' (Configured)
@@ -1326,17 +1406,25 @@ Custom WatchedFiles::
 c:/a/lib/lib.d.ts:
   {"id":6,"path":"c:/a/lib/lib.d.ts"}
 c:/projects/myproject/b.ts:
-  {"id":10,"path":"c:/projects/myproject/b.ts"}
+  {"id":14,"path":"c:/projects/myproject/b.ts"}
 c:/projects/myproject/c.ts:
-  {"id":9,"path":"c:/projects/myproject/c.ts"}
+  {"id":13,"path":"c:/projects/myproject/c.ts"}
 c:/projects/myproject/d.ts: *new*
-  {"id":11,"path":"c:/projects/myproject/d.ts"}
+  {"id":15,"path":"c:/projects/myproject/d.ts"}
 c:/projects/myproject/e.ts: *new*
-  {"id":12,"path":"c:/projects/myproject/e.ts"}
+  {"id":16,"path":"c:/projects/myproject/e.ts"}
 c:/projects/myproject/m.ts:
   {"id":4,"path":"c:/projects/myproject/m.ts"}
+c:/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"c:/projects/myproject/node_modules/package.json"}
+c:/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"c:/projects/myproject/node_modules/something/package.json"}
+c:/projects/myproject/package.json:
+  {"id":7,"path":"c:/projects/myproject/package.json"}
 c:/projects/myproject/tsconfig.json:
   {"id":1,"path":"c:/projects/myproject/tsconfig.json"}
+c:/projects/package.json:
+  {"id":8,"path":"c:/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 c:/projects/myproject:
@@ -1344,9 +1432,9 @@ c:/projects/myproject:
 c:/projects/myproject/node_modules:
   {"id":5,"path":"c:/projects/myproject/node_modules","recursive":true}
 c:/projects/myproject/node_modules/@types:
-  {"id":7,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"c:/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 c:/projects/node_modules/@types:
-  {"id":8,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"c:/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 Projects::
 c:/projects/myproject/tsconfig.json (Configured) *changed*
diff --git a/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-without-canUseEvents.js b/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-without-canUseEvents.js
index 103fa17f1687b..3c151adb92a4a 100644
--- a/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-without-canUseEvents.js
+++ b/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents-without-canUseEvents.js
@@ -63,6 +63,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/something/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -105,8 +109,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/something/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -223,8 +235,16 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -433,8 +453,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -511,8 +539,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents.js b/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents.js
index a70a15d02f3e5..2d379f29d9ea9 100644
--- a/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents.js
+++ b/tests/baselines/reference/tsserver/events/watchEvents/canUseWatchEvents.js
@@ -142,6 +142,54 @@ Info seq  [hh:mm:ss:mss] event:
 Custom watchFile: 6: /a/lib/lib.d.ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 7,
+        "path": "/user/username/projects/myproject/package.json"
+      }
+    }
+Custom watchFile: 7: /user/username/projects/myproject/package.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 8,
+        "path": "/user/username/projects/package.json"
+      }
+    }
+Custom watchFile: 8: /user/username/projects/package.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/something/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 9,
+        "path": "/user/username/projects/myproject/node_modules/something/package.json"
+      }
+    }
+Custom watchFile: 9: /user/username/projects/myproject/node_modules/something/package.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] event:
+    {
+      "seq": 0,
+      "type": "event",
+      "event": "CustomHandler::createFileWatcher",
+      "body": {
+        "id": 10,
+        "path": "/user/username/projects/myproject/node_modules/package.json"
+      }
+    }
+Custom watchFile: 10: /user/username/projects/myproject/node_modules/package.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] event:
     {
@@ -149,13 +197,13 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createDirectoryWatcher",
       "body": {
-        "id": 7,
+        "id": 11,
         "path": "/user/username/projects/myproject/node_modules/@types",
         "recursive": true,
         "ignoreUpdate": true
       }
     }
-Custom watchDirectory: 7: /user/username/projects/myproject/node_modules/@types true true
+Custom watchDirectory: 11: /user/username/projects/myproject/node_modules/@types true true
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] event:
@@ -164,13 +212,13 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createDirectoryWatcher",
       "body": {
-        "id": 8,
+        "id": 12,
         "path": "/user/username/projects/node_modules/@types",
         "recursive": true,
         "ignoreUpdate": true
       }
     }
-Custom watchDirectory: 8: /user/username/projects/node_modules/@types true true
+Custom watchDirectory: 12: /user/username/projects/node_modules/@types true true
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
@@ -272,8 +320,16 @@ Custom WatchedFiles::
   {"id":3,"path":"/user/username/projects/myproject/b.ts"}
 /user/username/projects/myproject/m.ts: *new*
   {"id":4,"path":"/user/username/projects/myproject/m.ts"}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"id":10,"path":"/user/username/projects/myproject/node_modules/package.json"}
+/user/username/projects/myproject/node_modules/something/package.json: *new*
+  {"id":9,"path":"/user/username/projects/myproject/node_modules/something/package.json"}
+/user/username/projects/myproject/package.json: *new*
+  {"id":7,"path":"/user/username/projects/myproject/package.json"}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"id":1,"path":"/user/username/projects/myproject/tsconfig.json"}
+/user/username/projects/package.json: *new*
+  {"id":8,"path":"/user/username/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject: *new*
@@ -281,9 +337,9 @@ Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject/node_modules: *new*
   {"id":5,"path":"/user/username/projects/myproject/node_modules","recursive":true}
 /user/username/projects/myproject/node_modules/@types: *new*
-  {"id":7,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 /user/username/projects/node_modules/@types: *new*
-  {"id":8,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *new*
@@ -367,11 +423,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 9,
+        "id": 13,
         "path": "/user/username/projects/myproject/c.ts"
       }
     }
-Custom watchFile: 9: /user/username/projects/myproject/c.ts
+Custom watchFile: 13: /user/username/projects/myproject/c.ts
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
@@ -434,11 +490,19 @@ Custom WatchedFiles::
 /user/username/projects/myproject/b.ts:
   {"id":3,"path":"/user/username/projects/myproject/b.ts"}
 /user/username/projects/myproject/c.ts: *new*
-  {"id":9,"path":"/user/username/projects/myproject/c.ts"}
+  {"id":13,"path":"/user/username/projects/myproject/c.ts"}
 /user/username/projects/myproject/m.ts:
   {"id":4,"path":"/user/username/projects/myproject/m.ts"}
+/user/username/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"/user/username/projects/myproject/node_modules/package.json"}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"/user/username/projects/myproject/node_modules/something/package.json"}
+/user/username/projects/myproject/package.json:
+  {"id":7,"path":"/user/username/projects/myproject/package.json"}
 /user/username/projects/myproject/tsconfig.json:
   {"id":1,"path":"/user/username/projects/myproject/tsconfig.json"}
+/user/username/projects/package.json:
+  {"id":8,"path":"/user/username/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject:
@@ -446,9 +510,9 @@ Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject/node_modules:
   {"id":5,"path":"/user/username/projects/myproject/node_modules","recursive":true}
 /user/username/projects/myproject/node_modules/@types:
-  {"id":7,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 /user/username/projects/node_modules/@types:
-  {"id":8,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *changed*
@@ -676,11 +740,19 @@ Custom WatchedFiles::
 /a/lib/lib.d.ts:
   {"id":6,"path":"/a/lib/lib.d.ts"}
 /user/username/projects/myproject/c.ts:
-  {"id":9,"path":"/user/username/projects/myproject/c.ts"}
+  {"id":13,"path":"/user/username/projects/myproject/c.ts"}
 /user/username/projects/myproject/m.ts:
   {"id":4,"path":"/user/username/projects/myproject/m.ts"}
+/user/username/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"/user/username/projects/myproject/node_modules/package.json"}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"/user/username/projects/myproject/node_modules/something/package.json"}
+/user/username/projects/myproject/package.json:
+  {"id":7,"path":"/user/username/projects/myproject/package.json"}
 /user/username/projects/myproject/tsconfig.json:
   {"id":1,"path":"/user/username/projects/myproject/tsconfig.json"}
+/user/username/projects/package.json:
+  {"id":8,"path":"/user/username/projects/package.json"}
 
 Custom WatchedFiles *deleted*::
 /user/username/projects/myproject/b.ts:
@@ -692,9 +764,9 @@ Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject/node_modules:
   {"id":5,"path":"/user/username/projects/myproject/node_modules","recursive":true}
 /user/username/projects/myproject/node_modules/@types:
-  {"id":7,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 /user/username/projects/node_modules/@types:
-  {"id":8,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 ScriptInfos::
 /a/lib/lib.d.ts
@@ -741,11 +813,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 10,
+        "id": 14,
         "path": "/user/username/projects/myproject/b.ts"
       }
     }
-Custom watchFile: 10: /user/username/projects/myproject/b.ts
+Custom watchFile: 14: /user/username/projects/myproject/b.ts
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
 
@@ -763,13 +835,21 @@ Custom WatchedFiles::
 /a/lib/lib.d.ts:
   {"id":6,"path":"/a/lib/lib.d.ts"}
 /user/username/projects/myproject/b.ts: *new*
-  {"id":10,"path":"/user/username/projects/myproject/b.ts"}
+  {"id":14,"path":"/user/username/projects/myproject/b.ts"}
 /user/username/projects/myproject/c.ts:
-  {"id":9,"path":"/user/username/projects/myproject/c.ts"}
+  {"id":13,"path":"/user/username/projects/myproject/c.ts"}
 /user/username/projects/myproject/m.ts:
   {"id":4,"path":"/user/username/projects/myproject/m.ts"}
+/user/username/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"/user/username/projects/myproject/node_modules/package.json"}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"/user/username/projects/myproject/node_modules/something/package.json"}
+/user/username/projects/myproject/package.json:
+  {"id":7,"path":"/user/username/projects/myproject/package.json"}
 /user/username/projects/myproject/tsconfig.json:
   {"id":1,"path":"/user/username/projects/myproject/tsconfig.json"}
+/user/username/projects/package.json:
+  {"id":8,"path":"/user/username/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject:
@@ -777,9 +857,9 @@ Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject/node_modules:
   {"id":5,"path":"/user/username/projects/myproject/node_modules","recursive":true}
 /user/username/projects/myproject/node_modules/@types:
-  {"id":7,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 /user/username/projects/node_modules/@types:
-  {"id":8,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 ScriptInfos::
 /a/lib/lib.d.ts
@@ -824,7 +904,7 @@ Info seq  [hh:mm:ss:mss] request:
     {
       "command": "watchChange",
       "arguments": {
-        "id": 9,
+        "id": 13,
         "updated": [
           "/user/username/projects/myproject/c.ts"
         ]
@@ -1167,7 +1247,7 @@ Info seq  [hh:mm:ss:mss] request:
           ]
         },
         {
-          "id": 9,
+          "id": 13,
           "updated": [
             "/user/username/projects/myproject/c.ts"
           ]
@@ -1243,11 +1323,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 11,
+        "id": 15,
         "path": "/user/username/projects/myproject/d.ts"
       }
     }
-Custom watchFile: 11: /user/username/projects/myproject/d.ts
+Custom watchFile: 15: /user/username/projects/myproject/d.ts
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/e.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] event:
     {
@@ -1255,11 +1335,11 @@ Info seq  [hh:mm:ss:mss] event:
       "type": "event",
       "event": "CustomHandler::createFileWatcher",
       "body": {
-        "id": 12,
+        "id": 16,
         "path": "/user/username/projects/myproject/e.ts"
       }
     }
-Custom watchFile: 12: /user/username/projects/myproject/e.ts
+Custom watchFile: 16: /user/username/projects/myproject/e.ts
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 6 projectProgramVersion: 3 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
@@ -1326,17 +1406,25 @@ Custom WatchedFiles::
 /a/lib/lib.d.ts:
   {"id":6,"path":"/a/lib/lib.d.ts"}
 /user/username/projects/myproject/b.ts:
-  {"id":10,"path":"/user/username/projects/myproject/b.ts"}
+  {"id":14,"path":"/user/username/projects/myproject/b.ts"}
 /user/username/projects/myproject/c.ts:
-  {"id":9,"path":"/user/username/projects/myproject/c.ts"}
+  {"id":13,"path":"/user/username/projects/myproject/c.ts"}
 /user/username/projects/myproject/d.ts: *new*
-  {"id":11,"path":"/user/username/projects/myproject/d.ts"}
+  {"id":15,"path":"/user/username/projects/myproject/d.ts"}
 /user/username/projects/myproject/e.ts: *new*
-  {"id":12,"path":"/user/username/projects/myproject/e.ts"}
+  {"id":16,"path":"/user/username/projects/myproject/e.ts"}
 /user/username/projects/myproject/m.ts:
   {"id":4,"path":"/user/username/projects/myproject/m.ts"}
+/user/username/projects/myproject/node_modules/package.json:
+  {"id":10,"path":"/user/username/projects/myproject/node_modules/package.json"}
+/user/username/projects/myproject/node_modules/something/package.json:
+  {"id":9,"path":"/user/username/projects/myproject/node_modules/something/package.json"}
+/user/username/projects/myproject/package.json:
+  {"id":7,"path":"/user/username/projects/myproject/package.json"}
 /user/username/projects/myproject/tsconfig.json:
   {"id":1,"path":"/user/username/projects/myproject/tsconfig.json"}
+/user/username/projects/package.json:
+  {"id":8,"path":"/user/username/projects/package.json"}
 
 Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject:
@@ -1344,9 +1432,9 @@ Custom WatchedDirectoriesRecursive::
 /user/username/projects/myproject/node_modules:
   {"id":5,"path":"/user/username/projects/myproject/node_modules","recursive":true}
 /user/username/projects/myproject/node_modules/@types:
-  {"id":7,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":11,"path":"/user/username/projects/myproject/node_modules/@types","recursive":true,"ignoreUpdate":true}
 /user/username/projects/node_modules/@types:
-  {"id":8,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
+  {"id":12,"path":"/user/username/projects/node_modules/@types","recursive":true,"ignoreUpdate":true}
 
 Projects::
 /user/username/projects/myproject/tsconfig.json (Configured) *changed*
diff --git a/tests/baselines/reference/tsserver/findAllReferences/does-not-try-to-open-a-file-in-a-project-that-was-updated-and-no-longer-has-the-file.js b/tests/baselines/reference/tsserver/findAllReferences/does-not-try-to-open-a-file-in-a-project-that-was-updated-and-no-longer-has-the-file.js
index 1b4a32e207ba9..bc32a870cdd1f 100644
--- a/tests/baselines/reference/tsserver/findAllReferences/does-not-try-to-open-a-file-in-a-project-that-was-updated-and-no-longer-has-the-file.js
+++ b/tests/baselines/reference/tsserver/findAllReferences/does-not-try-to-open-a-file-in-a-project-that-was-updated-and-no-longer-has-the-file.js
@@ -132,6 +132,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/core/sr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/core/src 1 undefined Config: /packages/core/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/core/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/core/src/loading-indicator.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/core/src/package.json 2000 undefined Project: /packages/babel-loader/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/babel-loader/src/package.json 2000 undefined Project: /packages/babel-loader/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2018.full.d.ts 500 undefined Project: /packages/babel-loader/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/babel-loader/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/babel-loader/tsconfig.json' (Configured)
@@ -293,6 +295,10 @@ After request
 PolledWatches::
 /a/lib/lib.es2018.full.d.ts: *new*
   {"pollingInterval":500}
+/packages/babel-loader/src/package.json: *new*
+  {"pollingInterval":2000}
+/packages/core/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /packages/babel-loader/tsconfig.json: *new*
@@ -360,6 +366,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/core/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/core/src/package.json 2000 undefined Project: /packages/core/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2018.full.d.ts 500 undefined Project: /packages/core/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/core/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/core/tsconfig.json' (Configured)
@@ -525,6 +532,10 @@ After request
 PolledWatches::
 /a/lib/lib.es2018.full.d.ts:
   {"pollingInterval":500}
+/packages/babel-loader/src/package.json:
+  {"pollingInterval":2000}
+/packages/core/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /packages/babel-loader/tsconfig.json:
@@ -644,6 +655,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Finding references to /packages/core/src/index.ts position 92 in project /packages/core/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/babel-loader/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /packages/core/src/package.json 2000 undefined Project: /packages/babel-loader/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/babel-loader/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/babel-loader/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -737,8 +749,12 @@ After request
 PolledWatches::
 /a/lib/lib.es2018.full.d.ts:
   {"pollingInterval":500}
+/packages/babel-loader/src/package.json:
+  {"pollingInterval":2000}
 /packages/core/dist/loading-indicator.d.ts: *new*
   {"pollingInterval":2000}
+/packages/core/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /packages/babel-loader/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-link-open.js
index b6b97b8c15d63..c59f28dd7b3ce 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-and-link-open.js
index a3b9646c69892..e7ccb7494bd68 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-and-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -325,10 +340,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-open.js
index f8271704ced48..da3240f393afd 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk-with-target-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js
index 94b768bd8f033..13c577e2e2ee6 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-directory-symlink-target-and-import-match-disk.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-link-open.js
index a857291d5ccdd..88be1ffb3803e 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-and-link-open.js
index ad2efb8cb43bd..e2b2795a2604a 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-and-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -323,8 +333,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-open.js
index 6ff45973110d2..3db3578fd1624 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk-with-target-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js
index 0a944a30f80fc..b82b67d527c46 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-both-file-symlink-target-and-import-match-disk.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js
index 79ac994064e0c..8c158e96c1b73 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-changing-module-name-with-different-casing.js
@@ -67,6 +67,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/Logger.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -167,8 +169,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-link-open.js
index eb753a38e6ff7..9f4ca53aac9b1 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js
index 360db10f90049..30a46de15b602 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -325,10 +340,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-open.js
index f2c5e5e28c28c..9b4e9d123bd37 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not-with-target-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js
index 695c7d94fe7f3..1757f1ed08764 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-directory-symlink-target-matches-disk-but-import-does-not.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-link-open.js
index 57a2d60689c2f..3d6c0ae8a591e 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js
index b26b11459c0f9..9dce3a94a1aeb 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-and-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -323,8 +333,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-open.js
index 3a9ee1aaec5af..31c037a4794b8 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not-with-target-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js
index cc185ee7d9208..04ece48eac3d1 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-file-symlink-target-matches-disk-but-import-does-not.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-link-open.js
index 305e0592db09a..de98b2bfd050c 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js
index da965ea0dc106..58554072bfa99 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -325,10 +340,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-open.js
index 49db2d10624ad..510610fb0feac 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different-with-target-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js
index cb15d241f885b..9529bd68edf86 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-directory-symlink-target,-and-disk-are-all-different.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-link-open.js
index 1bb0f98a9a554..9748f05408740 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js
index 22fdc6facc07f..8df8314fcdbbb 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-and-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -323,8 +333,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-open.js
index 46387b5bf2aac..c35485fac2ba0 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different-with-target-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js
index 467025d3c1268..53dec9c7beb48 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import,-file-symlink-target,-and-disk-are-all-different.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-link-open.js
index f2c0e32f88fcb..75016b4616c5b 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js
index 361dfc1691e60..92ca2400fb6ec 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -325,10 +340,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-open.js
index 791b90f7b94e9..0134636f4ac45 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk-with-target-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js
index 01d2688a10f3f..84c7b9fcc22c5 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-directory-symlink-target-agree-but-do-not-match-disk.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-link-open.js
index b8ad97fb33b41..79e698d9f80a0 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js
index ebbd10f82fe21..fc944661da3d6 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-and-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -323,8 +333,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-open.js
index 2a720542d63ad..3ab45731f1ea9 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk-with-target-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js
index f9ed6671dfdb2..8c4c0ca877188 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-and-file-symlink-target-agree-but-do-not-match-disk.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-link-open.js
index 096fb98d0a9ba..add85e044e79a 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-and-link-open.js
index 52b932f608c31..a98a75825e73a 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-and-link-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -325,10 +340,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-open.js
index f8530f48bc607..fddef121e8a07 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not-with-target-open.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,10 +262,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js
index ed702a9d977fb..9932cadfff08d 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-directory-symlink-target-does-not.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/XY/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/XY/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-link-open.js
index e3aa0966eccb8..ad502aee76a60 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-and-link-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-and-link-open.js
index f96d002cab477..dced45e039e0e 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-and-link-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-and-link-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -323,8 +333,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-open.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-open.js
index 8a84f332124ce..c0cb86bd2566c 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-open.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not-with-target-open.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -251,8 +257,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js
index f8f3ca89e9b71..537b5b03dc242 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/when-import-matches-disk-but-file-symlink-target-does-not.js
@@ -75,6 +75,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/link.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +181,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-extends-is-specified-with-a-case-insensitive-file-system.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-extends-is-specified-with-a-case-insensitive-file-system.js
index 38c64bcd4dbc1..a1463e0fad7ac 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-extends-is-specified-with-a-case-insensitive-file-system.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-extends-is-specified-with-a-case-insensitive-file-system.js
@@ -96,6 +96,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /Users/username/de
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Users/username/dev/project/types 1 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Users/username/dev/project/types 1 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/username/dev/project/package.json 2000 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/username/dev/package.json 2000 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/username/dev/project/types/file2/package.json 2000 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Users/username/dev/project/types/package.json 2000 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Users/username/dev/project/types 1 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Users/username/dev/project/types 1 undefined Project: /Users/username/dev/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /Users/username/dev/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -196,6 +200,16 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/Users/username/dev/package.json: *new*
+  {"pollingInterval":2000}
+/Users/username/dev/project/package.json: *new*
+  {"pollingInterval":2000}
+/Users/username/dev/project/types/file2/package.json: *new*
+  {"pollingInterval":2000}
+/Users/username/dev/project/types/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /Users/username/dev/project/tsconfig.all.json: *new*
   {}
diff --git a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-renaming-file-with-different-casing.js b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-renaming-file-with-different-casing.js
index 828c52dea69dd..658142767cc8c 100644
--- a/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-renaming-file-with-different-casing.js
+++ b/tests/baselines/reference/tsserver/forceConsistentCasingInFileNames/works-when-renaming-file-with-different-casing.js
@@ -67,6 +67,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/another.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -167,8 +169,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -315,8 +321,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -395,8 +405,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -469,8 +483,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossPackage_pathsAndSymlink.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossPackage_pathsAndSymlink.js
index 8708f0eead2df..da3bd3b022d03 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossPackage_pathsAndSymlink.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossPackage_pathsAndSymlink.js
@@ -201,6 +201,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/app/
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/common/lib/index.tsx 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/common/lib/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/common/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -264,8 +266,11 @@ watchedFiles::
   {"pollingInterval":2000}
 /project/packages/common/lib/index.tsx: *new*
   {"pollingInterval":500}
+/project/packages/common/lib/package.json: *new*
+  {"pollingInterval":2000}
 /project/packages/common/package.json:
   {"pollingInterval":250}
+  {"pollingInterval":2000} *new*
 
 watchedDirectoriesRecursive::
 /project/packages/app: *new*
@@ -478,8 +483,11 @@ watchedFiles::
   {"pollingInterval":2000}
 /project/packages/common/lib/index.tsx:
   {"pollingInterval":500}
+/project/packages/common/lib/package.json:
+  {"pollingInterval":2000}
 /project/packages/common/package.json:
   {"pollingInterval":250}
+  {"pollingInterval":2000}
 
 watchedDirectoriesRecursive::
 /project/node_modules: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_sharedOutDir.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_sharedOutDir.js
index 8463e81222b9d..6ae9aa4ebf7e0 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_sharedOutDir.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_sharedOutDir.js
@@ -196,6 +196,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/index.ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/sub 1 undefined Project: /packages/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/sub 1 undefined Project: /packages/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/sub/folder/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/sub/folder/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/sub/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/app/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/app/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (7)
@@ -288,6 +290,10 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/dep/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+/packages/dep/sub/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 /tsconfig.base.json: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_stripSrc.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_stripSrc.js
index a9826834a2121..2dbefc776898c 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_stripSrc.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_stripSrc.js
@@ -132,6 +132,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/app/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/app/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/app/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -186,6 +190,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/dep/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/dep/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/dep/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -319,14 +326,25 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/app/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/app/src/utils.ts: *new*
   {"pollingInterval":500}
 /packages/app/tsconfig.json: *new*
   {"pollingInterval":2000}
 /packages/dep/src/main.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -439,14 +457,25 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/app/src/a.ts:
   {"pollingInterval":500}
+/packages/app/src/package.json:
+  {"pollingInterval":2000}
 /packages/app/src/utils.ts:
   {"pollingInterval":500}
 /packages/app/tsconfig.json:
   {"pollingInterval":2000}
 /packages/dep/src/main.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -853,12 +882,23 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/app/src/a.ts:
   {"pollingInterval":500}
+/packages/app/src/package.json:
+  {"pollingInterval":2000}
 /packages/app/tsconfig.json:
   {"pollingInterval":2000}
 /packages/dep/src/main.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toDist.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toDist.js
index 4e2590311aaf8..c1766d6ac29f0 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toDist.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toDist.js
@@ -132,6 +132,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/app/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/app/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/app/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -186,6 +190,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/dep/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/dep/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/dep/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -319,14 +326,25 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/app/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/app/src/utils.ts: *new*
   {"pollingInterval":500}
 /packages/app/tsconfig.json: *new*
   {"pollingInterval":2000}
 /packages/dep/src/main.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -439,14 +457,25 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/app/src/a.ts:
   {"pollingInterval":500}
+/packages/app/src/package.json:
+  {"pollingInterval":2000}
 /packages/app/src/utils.ts:
   {"pollingInterval":500}
 /packages/app/tsconfig.json:
   {"pollingInterval":2000}
 /packages/dep/src/main.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -853,12 +882,23 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/app/src/a.ts:
   {"pollingInterval":500}
+/packages/app/src/package.json:
+  {"pollingInterval":2000}
 /packages/app/tsconfig.json:
   {"pollingInterval":2000}
 /packages/dep/src/main.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toSrc.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toSrc.js
index 9f764fc390b0f..6ce9b7cbe673a 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toSrc.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_paths_toSrc.js
@@ -132,6 +132,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/app/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/app/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/app/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -186,6 +190,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/dep/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/dep/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/dep/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -319,14 +326,25 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/app/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/app/src/utils.ts: *new*
   {"pollingInterval":500}
 /packages/app/tsconfig.json: *new*
   {"pollingInterval":2000}
 /packages/dep/src/main.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -439,14 +457,25 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/app/src/a.ts:
   {"pollingInterval":500}
+/packages/app/src/package.json:
+  {"pollingInterval":2000}
 /packages/app/src/utils.ts:
   {"pollingInterval":500}
 /packages/app/tsconfig.json:
   {"pollingInterval":2000}
 /packages/dep/src/main.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -853,12 +882,23 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/app/src/a.ts:
   {"pollingInterval":500}
+/packages/app/src/package.json:
+  {"pollingInterval":2000}
 /packages/app/tsconfig.json:
   {"pollingInterval":2000}
 /packages/dep/src/main.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_stripSrc.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_stripSrc.js
index a3041a98798b7..7e7b6c456addc 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_stripSrc.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_stripSrc.js
@@ -158,6 +158,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/dep/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/dep/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/dep/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -293,8 +296,14 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -398,8 +407,14 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -575,6 +590,9 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -641,8 +659,17 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toDist.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toDist.js
index b47b3f6990efc..da948edee285b 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toDist.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toDist.js
@@ -158,6 +158,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/dep/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/dep/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/dep/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -293,8 +296,14 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -398,8 +407,14 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -575,6 +590,9 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -641,8 +659,17 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toSrc.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toSrc.js
index 05765c0157964..6a99b647e09c6 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toSrc.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportCrossProject_symlinks_toSrc.js
@@ -149,6 +149,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/dep/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /packages/dep/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /packages/dep/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/dep/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/dep/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -284,8 +287,14 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts: *new*
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json: *new*
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json: *new*
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -389,8 +398,14 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -566,6 +581,9 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/dep/src 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/folder/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/sub/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/dep/src/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -632,8 +650,17 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/dep/src/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/dep/src/sub/folder/index.ts:
   {"pollingInterval":500}
+/packages/dep/src/sub/folder/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
+/packages/dep/src/sub/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/dep/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns1.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns1.js
index 015bf16549e31..d063d20496c17 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns1.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns1.js
@@ -141,6 +141,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/aws-sdk/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/aws-sdk/clients/s3.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/aws-sdk/clients/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -179,6 +180,8 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/aws-sdk/clients/package.json: *new*
+  {"pollingInterval":2000}
 /project/node_modules/aws-sdk/clients/s3.d.ts: *new*
   {"pollingInterval":500}
 /project/node_modules/aws-sdk/index.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns2.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns2.js
index 5f8f126d63f5a..2c4045b40ecf5 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns2.js
@@ -141,6 +141,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/aws-sdk/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/aws-sdk/clients/s3.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/aws-sdk/clients/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -179,6 +180,8 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/aws-sdk/clients/package.json: *new*
+  {"pollingInterval":2000}
 /project/node_modules/aws-sdk/clients/s3.d.ts: *new*
   {"pollingInterval":500}
 /project/node_modules/aws-sdk/index.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_networkPaths.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_networkPaths.js
index 673f9c35f625f..1381c0fb10cee 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_networkPaths.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_networkPaths.js
@@ -141,6 +141,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: //tsclient/project/nod
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: //tsclient/project/node_modules/aws-sdk/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: //tsclient/project/node_modules/aws-sdk/clients/s3.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: //tsclient/project/node_modules/aws-sdk/clients/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -173,6 +174,8 @@ Info seq  [hh:mm:ss:mss] 	FileName: //tsclient/project/index.ts ProjectRootPath:
 Info seq  [hh:mm:ss:mss] 		Projects: /dev/null/inferredProject2*
 After Request
 watchedFiles::
+//tsclient/project/node_modules/aws-sdk/clients/package.json: *new*
+  {"pollingInterval":2000}
 //tsclient/project/node_modules/aws-sdk/clients/s3.d.ts: *new*
   {"pollingInterval":500}
 //tsclient/project/node_modules/aws-sdk/index.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks.js
index 18f4f4a9858b3..f210ee86fdd24 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks.js
@@ -161,6 +161,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/package.json
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.store/@remix-run-server-runtime-virtual-c72daf0d/package/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.store/@remix-run-server-runtime-virtual-c72daf0d/package/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -202,6 +203,8 @@ watchedFiles::
   {"pollingInterval":500}
 /project/node_modules/.store/@remix-run-server-runtime-virtual-c72daf0d/package/jsconfig.json:
   {"pollingInterval":2000}
+/project/node_modules/.store/@remix-run-server-runtime-virtual-c72daf0d/package/package.json: *new*
+  {"pollingInterval":2000}
 /project/node_modules/.store/@remix-run-server-runtime-virtual-c72daf0d/package/tsconfig.json:
   {"pollingInterval":2000}
 /project/node_modules/.store/@remix-run-server-runtime-virtual-c72daf0d/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks2.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks2.js
index b5fcf6af0c642..f77cf7203ea99 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_symlinks2.js
@@ -200,6 +200,8 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 2 root files in 2 depe
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/.store/aws-sdk-virtual-adfe098/package/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/@remix-run/server-runtime/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/.store/aws-sdk-virtual-adfe098/package/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/@remix-run/server-runtime/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -244,6 +246,8 @@ c:/project/node_modules/.store/aws-sdk-virtual-adfe098/package/index.d.ts: *new*
   {"pollingInterval":500}
 c:/project/node_modules/.store/aws-sdk-virtual-adfe098/package/jsconfig.json:
   {"pollingInterval":2000}
+c:/project/node_modules/.store/aws-sdk-virtual-adfe098/package/package.json: *new*
+  {"pollingInterval":2000}
 c:/project/node_modules/.store/aws-sdk-virtual-adfe098/package/tsconfig.json:
   {"pollingInterval":2000}
 c:/project/node_modules/.store/aws-sdk-virtual-adfe098/tsconfig.json:
@@ -254,6 +258,8 @@ c:/project/node_modules/.store/tsconfig.json:
   {"pollingInterval":2000}
 c:/project/node_modules/@remix-run/server-runtime/index.d.ts: *new*
   {"pollingInterval":500}
+c:/project/node_modules/@remix-run/server-runtime/package.json: *new*
+  {"pollingInterval":2000}
 c:/project/node_modules/jsconfig.json:
   {"pollingInterval":2000}
 c:/project/node_modules/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_windowsPaths.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_windowsPaths.js
index 34b3cb920d5ad..e757548512f56 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_windowsPaths.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportFileExcludePatterns_windowsPaths.js
@@ -175,6 +175,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/project/node_m
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/project/node_modules 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/aws-sdk/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/aws-sdk/clients/s3.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/project/node_modules/aws-sdk/clients/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -213,6 +214,8 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+c:/project/node_modules/aws-sdk/clients/package.json: *new*
+  {"pollingInterval":2000}
 c:/project/node_modules/aws-sdk/clients/s3.d.ts: *new*
   {"pollingInterval":500}
 c:/project/node_modules/aws-sdk/index.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportNodeModuleSymlinkRenamed.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportNodeModuleSymlinkRenamed.js
index 6f8cb613b0d05..82c73638e1ada 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportNodeModuleSymlinkRenamed.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportNodeModuleSymlinkRenamed.js
@@ -228,6 +228,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/web/package.
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/utils/src/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/utils/src/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -236,6 +237,7 @@ Info seq  [hh:mm:ss:mss] 	Files (1)
 
 	../utils/src/index.ts
 	  Root file specified for compilation
+	  File is CommonJS module because '../utils/package.json' does not have field "type"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] event:
@@ -289,6 +291,8 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/utils/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/utils/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/utils/tsconfig.json: *new*
   {"pollingInterval":2000}
 /packages/web/package.json: *new*
@@ -499,6 +503,8 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/utils/src/index.ts:
   {"pollingInterval":500}
+/packages/utils/src/package.json:
+  {"pollingInterval":2000}
 /packages/utils/tsconfig.json:
   {"pollingInterval":2000}
 /packages/web/package.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider1.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider1.js
index 60ba36aa44734..6f5adcbe982a2 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider1.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider1.js
@@ -166,6 +166,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /package.json 250 unde
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/forms.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@angular/forms/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -223,6 +224,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@angular/forms/forms.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@angular/forms/package.json: *new*
+  {"pollingInterval":2000}
 /package.json: *new*
   {"pollingInterval":250}
 /tsconfig.json: *new*
@@ -467,6 +470,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@angular/forms/forms.d.ts:
   {"pollingInterval":500}
+/node_modules/@angular/forms/package.json:
+  {"pollingInterval":2000}
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider5.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider5.js
index 3bb88d83eb84e..abf2ba7bde61c 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider5.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider5.js
@@ -64,6 +64,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react-hook-form/dist/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react-hook-form/dist/useForm.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react-hook-form/dist/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -98,6 +99,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/react-hook-form/dist/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/react-hook-form/dist/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/react-hook-form/dist/useForm.d.ts: *new*
   {"pollingInterval":500}
 /package.json: *new*
@@ -171,6 +174,7 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react-hook-form/dist/package.json 2000 undefined Project: /dev/null/autoImportProviderProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject2*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -206,6 +210,23 @@ Info seq  [hh:mm:ss:mss] 		Projects: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] 	FileName: /index.ts ProjectRootPath: undefined
 Info seq  [hh:mm:ss:mss] 		Projects: /dev/null/inferredProject2*
 After Request
+watchedFiles::
+/lib.d.ts:
+  {"pollingInterval":500}
+/lib.decorators.d.ts:
+  {"pollingInterval":500}
+/lib.decorators.legacy.d.ts:
+  {"pollingInterval":500}
+/node_modules/react-hook-form/dist/index.d.ts:
+  {"pollingInterval":500}
+/node_modules/react-hook-form/dist/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
+/node_modules/react-hook-form/dist/useForm.d.ts:
+  {"pollingInterval":500}
+/package.json:
+  {"pollingInterval":250}
+
 Projects::
 /dev/null/autoImportProviderProject1* (AutoImportProvider)
     projectStateVersion: 1
@@ -430,6 +451,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/react-hook-form/dist/index.d.ts:
   {"pollingInterval":500}
+/node_modules/react-hook-form/dist/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /node_modules/react-hook-form/dist/useForm.d.ts:
   {"pollingInterval":500}
 /package.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider6.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider6.js
index 6fe4f3e2345a0..42b2387dc269d 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider6.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider6.js
@@ -236,6 +236,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.es2019.symbol.d.t
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.es5.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/react/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/react/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (38)
@@ -423,6 +424,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/react/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -535,6 +537,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/react/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@types/react/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /package.json: *new*
   {"pollingInterval":250}
 /tsconfig.json: *new*
@@ -816,6 +821,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider7.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider7.js
index f56755fe6b88c..5cb2c0fb630c8 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider7.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider7.js
@@ -90,6 +90,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /src/index.ts 500 unde
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -171,6 +172,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -223,6 +225,9 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts: *new*
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /src/index.ts: *new*
   {"pollingInterval":500}
 /tsconfig.json: *new*
@@ -340,6 +345,9 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts:
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
@@ -1243,6 +1251,9 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts:
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider8.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider8.js
index 077fc3ec7cb60..471b9b4cc3b11 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider8.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider8.js
@@ -90,6 +90,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /src/index.ts 500 unde
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -171,6 +172,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /dev/null/autoImportProviderProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -223,6 +225,9 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts: *new*
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /src/index.ts: *new*
   {"pollingInterval":500}
 /tsconfig.json: *new*
@@ -340,6 +345,9 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts:
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
@@ -1243,6 +1251,9 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts:
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap2.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap2.js
index 298b64ca1d263..f11e3a5ca85e1 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap2.js
@@ -157,6 +157,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /package.json 250 unde
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/dependency/lib/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/dependency/lib/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -165,6 +166,7 @@ Info seq  [hh:mm:ss:mss] 	Files (1)
 
 	node_modules/dependency/lib/index.d.ts
 	  Root file specified for compilation
+	  File is ECMAScript module because 'node_modules/dependency/package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
@@ -192,6 +194,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/dependency/lib/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/dependency/lib/package.json: *new*
+  {"pollingInterval":2000}
 /package.json: *new*
   {"pollingInterval":250}
 /src/foo.ts: *new*
@@ -284,6 +288,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/dependency/lib/index.d.ts:
   {"pollingInterval":500}
+/node_modules/dependency/lib/package.json:
+  {"pollingInterval":2000}
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
@@ -377,6 +383,7 @@ Info seq  [hh:mm:ss:mss] getCompletionData: Is inside comment: *
 Info seq  [hh:mm:ss:mss] getCompletionData: Get previous token: *
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/dependency/lib/package.json 2000 undefined Project: /dev/null/autoImportProviderProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject2*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -385,6 +392,7 @@ Info seq  [hh:mm:ss:mss] 	Files (1)
 
 	node_modules/dependency/lib/index.d.ts
 	  Root file specified for compilation
+	  File is ECMAScript module because 'node_modules/dependency/package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] getExportInfoMap: cache miss or empty; calculating new results
@@ -1113,6 +1121,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/dependency/lib/index.d.ts:
   {"pollingInterval":500}
+/node_modules/dependency/lib/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap3.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap3.js
index 07b0a96d3297f..ed084e143bda7 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap3.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_exportMap3.js
@@ -150,6 +150,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /package.json 250 unde
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/dependency/lib/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/dependency/lib/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -185,6 +186,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/dependency/lib/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/dependency/lib/package.json: *new*
+  {"pollingInterval":2000}
 /package.json: *new*
   {"pollingInterval":250}
 /src/foo.ts: *new*
@@ -277,6 +280,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/dependency/lib/index.d.ts:
   {"pollingInterval":500}
+/node_modules/dependency/lib/package.json:
+  {"pollingInterval":2000}
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
@@ -1115,8 +1120,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/dependency/lib/lol.d.ts: *new*
   {"pollingInterval":500}
-/node_modules/dependency/lib/package.json: *new*
+/node_modules/dependency/lib/package.json:
   {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_globalTypingsCache.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_globalTypingsCache.js
index ec6505bfdb6a4..79f24e03573a5 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_globalTypingsCache.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_globalTypingsCache.js
@@ -222,6 +222,7 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/package.json 250 undefined WatchType: package.json file
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Library/Caches/typescript/node_modules/@types/react-router-dom/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -283,6 +284,7 @@ watchedFiles::
   {"pollingInterval":2000}
 /Library/Caches/typescript/node_modules/@types/react-router-dom/package.json:
   {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /Library/Caches/typescript/node_modules/@types/react-router-dom/tsconfig.json:
   {"pollingInterval":2000}
 /Library/Caches/typescript/node_modules/@types/tsconfig.json:
@@ -988,6 +990,7 @@ watchedFiles::
   {"pollingInterval":2000}
 /Library/Caches/typescript/node_modules/@types/react-router-dom/package.json:
   {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /Library/Caches/typescript/node_modules/@types/react-router-dom/tsconfig.json:
   {"pollingInterval":2000}
 /Library/Caches/typescript/node_modules/@types/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_namespaceSameNameAsIntrinsic.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_namespaceSameNameAsIntrinsic.js
index 286936db68e6b..8c4c260183e59 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_namespaceSameNameAsIntrinsic.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_namespaceSameNameAsIntrinsic.js
@@ -166,6 +166,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/fp-ts/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/fp-ts/lib/string.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/fp-ts/lib/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -226,6 +227,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/fp-ts/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/fp-ts/lib/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/fp-ts/lib/string.d.ts: *new*
   {"pollingInterval":500}
 /package.json: *new*
@@ -1243,6 +1246,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/fp-ts/index.d.ts:
   {"pollingInterval":500}
+/node_modules/fp-ts/lib/package.json:
+  {"pollingInterval":2000}
 /node_modules/fp-ts/lib/string.d.ts:
   {"pollingInterval":500}
 /package.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_pnpm.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_pnpm.js
index 9e7ae23137900..1e2994bf81d3f 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_pnpm.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_pnpm.js
@@ -133,6 +133,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /package.json 250 unde
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/mobx.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -170,6 +172,10 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/mobx.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/package.json: *new*
+  {"pollingInterval":2000}
+/node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/package.json: *new*
+  {"pollingInterval":2000}
 /package.json: *new*
   {"pollingInterval":250}
 /tsconfig.json: *new*
@@ -260,6 +266,10 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/mobx.d.ts:
   {"pollingInterval":500}
+/node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/package.json:
+  {"pollingInterval":2000}
+/node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/package.json:
+  {"pollingInterval":2000}
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
@@ -424,6 +434,8 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/package.json 2000 undefined Project: /dev/null/autoImportProviderProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/package.json 2000 undefined Project: /dev/null/autoImportProviderProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject2*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -483,6 +495,12 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/mobx.d.ts:
   {"pollingInterval":500}
+/node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/dist/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
+/node_modules/.pnpm/mobx@6.0.4/node_modules/mobx/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /package.json:
   {"pollingInterval":250}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_wildcardExports3.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_wildcardExports3.js
index ca7b25b12cdf9..9183c9dbb1bf0 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_wildcardExports3.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportProvider_wildcardExports3.js
@@ -197,6 +197,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/apps/web/pack
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/ui/src/Card.tsx 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/ui/src/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/packages/ui/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -258,8 +260,11 @@ watchedFiles::
   {"pollingInterval":2000}
 /project/packages/ui/package.json:
   {"pollingInterval":250}
+  {"pollingInterval":2000} *new*
 /project/packages/ui/src/Card.tsx: *new*
   {"pollingInterval":500}
+/project/packages/ui/src/package.json: *new*
+  {"pollingInterval":2000}
 
 watchedDirectoriesRecursive::
 /project/apps/web/app: *new*
@@ -675,8 +680,11 @@ watchedFiles::
   {"pollingInterval":2000}
 /project/packages/ui/package.json:
   {"pollingInterval":250}
+  {"pollingInterval":2000}
 /project/packages/ui/src/Card.tsx:
   {"pollingInterval":500}
+/project/packages/ui/src/package.json:
+  {"pollingInterval":2000}
 
 watchedDirectoriesRecursive::
 /project/apps/web/app:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/autoImportReExportFromAmbientModule.js b/tests/baselines/reference/tsserver/fourslashServer/autoImportReExportFromAmbientModule.js
index f83e65ddfa23e..f0b63cbda93db 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/autoImportReExportFromAmbientModule.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/autoImportReExportFromAmbientModule.js
@@ -72,6 +72,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/fs-extra/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/node/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/fs-extra/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -120,6 +121,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/fs-extra/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -168,6 +170,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/fs-extra/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@types/fs-extra/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /node_modules/@types/node/index.d.ts: *new*
   {"pollingInterval":500}
 /tsconfig.json: *new*
@@ -256,6 +261,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/fs-extra/index.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/fs-extra/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /node_modules/@types/node/index.d.ts:
   {"pollingInterval":500}
 /tsconfig.json:
@@ -1087,6 +1095,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/fs-extra/index.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/fs-extra/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /node_modules/@types/node/index.d.ts:
   {"pollingInterval":500}
 /tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles01.js b/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles01.js
index 70851164b6a9a..ff18a6f9d5898 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles01.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles01.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -82,8 +84,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -856,6 +862,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -905,6 +913,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -926,11 +936,21 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
+watchedFiles *deleted*::
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+
 watchedDirectories::
 /tests/cases/fourslash/server: *new*
   {}
diff --git a/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles02.js b/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles02.js
index 3df15493bfddb..41e8834ec91fa 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles02.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/completionEntryDetailAcrossFiles02.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -82,8 +84,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -862,6 +868,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -911,6 +919,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -932,11 +942,21 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
+watchedFiles *deleted*::
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+
 watchedDirectories::
 /tests/cases/fourslash/server: *new*
   {}
diff --git a/tests/baselines/reference/tsserver/fourslashServer/completionsImport_addToNamedWithDifferentCacheValue.js b/tests/baselines/reference/tsserver/fourslashServer/completionsImport_addToNamedWithDifferentCacheValue.js
index 857290829681e..1211fd3c7c7b5 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/completionsImport_addToNamedWithDifferentCacheValue.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/completionsImport_addToNamedWithDifferentCacheValue.js
@@ -87,6 +87,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /src/index.ts 500 unde
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir 1 undefined Project: /tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/mylib/mySubDir/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -190,6 +191,8 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts: *new*
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json: *new*
+  {"pollingInterval":2000}
 /src/index.ts: *new*
   {"pollingInterval":500}
 /tsconfig.json: *new*
@@ -292,6 +295,8 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/mylib/mySubDir/myClass2.ts:
   {"pollingInterval":500}
+/packages/mylib/mySubDir/package.json:
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/completionsImport_computedSymbolName.js b/tests/baselines/reference/tsserver/fourslashServer/completionsImport_computedSymbolName.js
index dd0aa1ee19d45..18fa2df915314 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/completionsImport_computedSymbolName.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/completionsImport_computedSymbolName.js
@@ -84,6 +84,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/node/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/ts-node/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/ts-node/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -132,6 +133,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/ts-node/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -182,6 +184,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/ts-node/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@types/ts-node/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -270,6 +275,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/ts-node/index.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/ts-node/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/completionsImport_jsModuleExportsAssignment.js b/tests/baselines/reference/tsserver/fourslashServer/completionsImport_jsModuleExportsAssignment.js
index f0f6946ce4f47..6f3727e574b3d 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/completionsImport_jsModuleExportsAssignment.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/completionsImport_jsModuleExportsAssignment.js
@@ -78,6 +78,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 5
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /third_party/marked/src/defaults.js 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /third_party/marked/src/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -171,6 +172,8 @@ watchedFiles::
   {"pollingInterval":500}
 /third_party/marked/src/defaults.js: *new*
   {"pollingInterval":500}
+/third_party/marked/src/package.json: *new*
+  {"pollingInterval":2000}
 /tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -292,6 +295,8 @@ watchedFiles::
   {"pollingInterval":500}
 /third_party/marked/src/defaults.js:
   {"pollingInterval":500}
+/third_party/marked/src/package.json:
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/declarationMapGoToDefinition.js b/tests/baselines/reference/tsserver/fourslashServer/declarationMapGoToDefinition.js
index cddac51f9bbfb..b913df2b64f39 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/declarationMapGoToDefinition.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/declarationMapGoToDefinition.js
@@ -72,6 +72,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -110,8 +112,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -167,6 +173,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -214,10 +222,16 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/indexdef.d.ts: *new*
   {"pollingInterval":500}
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -337,12 +351,18 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/indexdef.d.ts:
   {"pollingInterval":500}
 /tests/cases/fourslash/server/indexdef.d.ts.map: *new*
   {"pollingInterval":500}
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/declarationMapsGoToDefinitionRelativeSourceRoot.js b/tests/baselines/reference/tsserver/fourslashServer/declarationMapsGoToDefinitionRelativeSourceRoot.js
index d7103db48ea56..751c59ebdec96 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/declarationMapsGoToDefinitionRelativeSourceRoot.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/declarationMapsGoToDefinitionRelativeSourceRoot.js
@@ -72,6 +72,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -110,8 +112,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -167,6 +173,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/out/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -214,10 +223,18 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
 /tests/cases/fourslash/server/out/indexdef.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/server/out/package.json: *new*
+  {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -335,12 +352,20 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
 /tests/cases/fourslash/server/out/indexdef.d.ts:
   {"pollingInterval":500}
 /tests/cases/fourslash/server/out/indexdef.d.ts.map: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/server/out/package.json:
+  {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/declarationMapsOutOfDateMapping.js b/tests/baselines/reference/tsserver/fourslashServer/declarationMapsOutOfDateMapping.js
index e31ccdd78acb0..12788e3f88678 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/declarationMapsOutOfDateMapping.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/declarationMapsOutOfDateMapping.js
@@ -51,6 +51,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferred
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/a/dist/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /node_modules/a/dist/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /node_modules/a/dist/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -87,6 +88,8 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/a/dist/package.json: *new*
+  {"pollingInterval":2000}
 
 watchedDirectoriesRecursive::
 /node_modules/a/dist/node_modules/@types: *new*
@@ -127,6 +130,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /
 Info seq  [hh:mm:ss:mss] For info: /index.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/a/dist/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -168,6 +172,7 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Root file specified for compilation
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /node_modules/a/dist/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /node_modules/a/dist/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /node_modules/a/dist/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
@@ -187,6 +192,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/node_modules/a/dist/package.json:
+  {"pollingInterval":2000} *new*
+
+watchedFiles *deleted*::
+/node_modules/a/dist/package.json:
+  {"pollingInterval":2000}
 
 watchedDirectoriesRecursive *deleted*::
 /node_modules/a/dist/node_modules/@types:
@@ -281,6 +292,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/a/dist/index.d.ts.map: *new*
   {"pollingInterval":500}
+/node_modules/a/dist/package.json:
+  {"pollingInterval":2000}
 /node_modules/a/src/index.ts: *new*
   {"pollingInterval":500}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/definition01.js b/tests/baselines/reference/tsserver/fourslashServer/definition01.js
index 7f4e6094beab2..ebfd1fa630dff 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/definition01.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/definition01.js
@@ -39,6 +39,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -80,10 +82,14 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/a.ts: *new*
   {"pollingInterval":500}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/getFileReferences_server2.js b/tests/baselines/reference/tsserver/fourslashServer/getFileReferences_server2.js
index a3b637a76643b..01b9e11f5142c 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/getFileReferences_server2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/getFileReferences_server2.js
@@ -164,6 +164,7 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /pa
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/shared/src/package.json 2000 undefined Project: /packages/server/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/server/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/server/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -211,6 +212,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/shared/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/shared/src/package.json 2000 undefined Project: /packages/shared/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/shared/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/shared/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -252,6 +254,7 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/client/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/client/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/shared/src/package.json 2000 undefined Project: /packages/client/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/client/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/client/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -399,6 +402,10 @@ watchedFiles::
   {"pollingInterval":500}
 /packages/server/tsconfig.json: *new*
   {"pollingInterval":2000}
+/packages/shared/src/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /packages/shared/src/referenced.ts: *new*
   {"pollingInterval":500}
 /packages/shared/tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource15_bundler.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource15_bundler.js
index 1dba9ca909d0c..88b8978e80ca7 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource15_bundler.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource15_bundler.js
@@ -301,6 +301,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/auxiliar
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/index.js 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/cjs/react.production.min.js 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/cjs/react.development.js 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/cjs/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/auxiliaryProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/auxiliaryProject1*' (Auxiliary)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -379,6 +380,8 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/node_modules/react/cjs/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/react/cjs/react.development.js: *new*
   {"pollingInterval":500}
 /node_modules/react/cjs/react.production.min.js: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource2_nodeModulesWithTypes.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource2_nodeModulesWithTypes.js
index 9e77f06c90353..901163fac8395 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource2_nodeModulesWithTypes.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource2_nodeModulesWithTypes.js
@@ -109,6 +109,7 @@ Info seq  [hh:mm:ss:mss] Search path: /
 Info seq  [hh:mm:ss:mss] For info: /index.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/types/main.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/types/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -154,6 +155,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/foo/types/main.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/foo/types/package.json: *new*
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/inferredProject1* (Inferred)
@@ -205,6 +208,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/auxiliaryProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/lib/main.js 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/lib/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/auxiliaryProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/auxiliaryProject1*' (Auxiliary)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -260,8 +264,12 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/foo/lib/main.js: *new*
   {"pollingInterval":500}
+/node_modules/foo/lib/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/foo/types/main.d.ts:
   {"pollingInterval":500}
+/node_modules/foo/types/package.json:
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/auxiliaryProject1* (Auxiliary) *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource3_nodeModulesAtTypes.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource3_nodeModulesAtTypes.js
index db06214ef0559..164d949ccc43c 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource3_nodeModulesAtTypes.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource3_nodeModulesAtTypes.js
@@ -226,6 +226,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/auxiliaryProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/lib/main.js 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/lib/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/auxiliaryProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/auxiliaryProject1*' (Auxiliary)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -286,6 +287,8 @@ watchedFiles::
   {"pollingInterval":2000}
 /node_modules/foo/lib/main.js: *new*
   {"pollingInterval":500}
+/node_modules/foo/lib/package.json: *new*
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/auxiliaryProject1* (Auxiliary) *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource6_sameAsGoToDef2.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource6_sameAsGoToDef2.js
index 30a0556625919..d5b4b2747703b 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource6_sameAsGoToDef2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource6_sameAsGoToDef2.js
@@ -116,6 +116,7 @@ Info seq  [hh:mm:ss:mss] Search path: /
 Info seq  [hh:mm:ss:mss] For info: /b.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/types/a.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/foo/types/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -161,6 +162,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/foo/types/a.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/foo/types/package.json: *new*
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/inferredProject1* (Inferred)
@@ -255,6 +258,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/foo/types/a.d.ts.map: *new*
   {"pollingInterval":500}
+/node_modules/foo/types/package.json:
+  {"pollingInterval":2000}
 
 Projects::
 /dev/null/inferredProject1* (Inferred)
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource7_conditionallyMinified.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource7_conditionallyMinified.js
index 20cd07e3ecc0c..db2a8ddfb103b 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource7_conditionallyMinified.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource7_conditionallyMinified.js
@@ -204,6 +204,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/auxiliar
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/index.js 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/cjs/react.production.min.js 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/cjs/react.development.js 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/react/cjs/package.json 2000 undefined Project: /dev/null/auxiliaryProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/auxiliaryProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/auxiliaryProject1*' (Auxiliary)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -282,6 +283,8 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/node_modules/react/cjs/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/react/cjs/react.development.js: *new*
   {"pollingInterval":500}
 /node_modules/react/cjs/react.production.min.js: *new*
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource8_mapFromAtTypes.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource8_mapFromAtTypes.js
index 0cfd6fec1afe0..21c5966e76911 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource8_mapFromAtTypes.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource8_mapFromAtTypes.js
@@ -100,6 +100,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/l
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/lodash/common/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -143,6 +144,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/lodash/common/math.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@types/lodash/common/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/@types/lodash/index.d.ts: *new*
   {"pollingInterval":500}
 /node_modules/@types/lodash/package.json: *new*
@@ -192,6 +195,7 @@ Info seq  [hh:mm:ss:mss] Search path: /
 Info seq  [hh:mm:ss:mss] For info: /index.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/lodash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/lodash/common/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -242,6 +246,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/lodash/common/math.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/lodash/common/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /node_modules/@types/lodash/index.d.ts:
   {"pollingInterval":500}
 /node_modules/@types/lodash/package.json:
@@ -380,6 +387,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/lodash/common/math.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/lodash/common/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /node_modules/@types/lodash/index.d.ts:
   {"pollingInterval":500}
 /node_modules/@types/lodash/package.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/goToSource9_mapFromAtTypes2.js b/tests/baselines/reference/tsserver/fourslashServer/goToSource9_mapFromAtTypes2.js
index 9a6ad5b81f691..74139fa2cc7b2 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/goToSource9_mapFromAtTypes2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/goToSource9_mapFromAtTypes2.js
@@ -101,6 +101,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/l
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/lodash/common/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -144,6 +145,8 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/lodash/common/math.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@types/lodash/common/package.json: *new*
+  {"pollingInterval":2000}
 /node_modules/@types/lodash/index.d.ts: *new*
   {"pollingInterval":500}
 /node_modules/@types/lodash/package.json: *new*
@@ -193,6 +196,7 @@ Info seq  [hh:mm:ss:mss] Search path: /
 Info seq  [hh:mm:ss:mss] For info: /index.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/lodash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/lodash/common/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -243,6 +247,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/lodash/common/math.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/lodash/common/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /node_modules/@types/lodash/index.d.ts:
   {"pollingInterval":500}
 /node_modules/@types/lodash/package.json:
@@ -353,6 +360,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/lodash/common/math.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/lodash/common/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /node_modules/@types/lodash/index.d.ts:
   {"pollingInterval":500}
 /node_modules/@types/lodash/package.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelateive2.js b/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelateive2.js
index b70362e0f8aa0..de83756fae670 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelateive2.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelateive2.js
@@ -91,6 +91,7 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /apps/app1/tsconfi
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /apps/app1/src/package.json 2000 undefined Project: /apps/app1/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /apps/app1/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/apps/app1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (8)
@@ -179,6 +180,8 @@ watchedFiles::
   {"pollingInterval":500}
 /apps/app1/src/index.ts: *new*
   {"pollingInterval":500}
+/apps/app1/src/package.json: *new*
+  {"pollingInterval":2000}
 /apps/app1/src/utils.ts: *new*
   {"pollingInterval":500}
 /apps/app1/tsconfig.json: *new*
@@ -321,6 +324,8 @@ After Request
 watchedFiles::
 /apps/app1/src/app.ts:
   {"pollingInterval":500}
+/apps/app1/src/package.json:
+  {"pollingInterval":2000}
 /apps/app1/src/utils.ts:
   {"pollingInterval":500}
 /apps/app1/tsconfig.json:
@@ -720,6 +725,8 @@ Info seq  [hh:mm:ss:mss] 	FileName: /apps/app1/src/app.ts ProjectRootPath: undef
 Info seq  [hh:mm:ss:mss] 		Projects: /apps/app1/tsconfig.json
 After Request
 watchedFiles::
+/apps/app1/src/package.json:
+  {"pollingInterval":2000}
 /apps/app1/src/utils.ts:
   {"pollingInterval":500}
 /apps/app1/tsconfig.json:
@@ -1121,6 +1128,8 @@ Info seq  [hh:mm:ss:mss] 	FileName: /shared/data.ts ProjectRootPath: undefined
 Info seq  [hh:mm:ss:mss] 		Projects: /apps/app1/tsconfig.json
 After Request
 watchedFiles::
+/apps/app1/src/package.json:
+  {"pollingInterval":2000}
 /apps/app1/src/utils.ts:
   {"pollingInterval":500}
 /apps/app1/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelative1.js b/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelative1.js
index 7e942f26b915f..edb3de627a445 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelative1.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_externalNonRelative1.js
@@ -270,6 +270,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/pkg-2/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/pkg-2/src/utils.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/pkg-2/src/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -334,6 +335,8 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/pkg-2/src/index.ts: *new*
   {"pollingInterval":500}
+/packages/pkg-2/src/package.json: *new*
+  {"pollingInterval":2000}
 /packages/pkg-2/src/utils.ts: *new*
   {"pollingInterval":500}
 /packages/pkg-2/tsconfig.json: *new*
@@ -568,6 +571,8 @@ watchedFiles::
   {"pollingInterval":2000}
 /packages/pkg-2/src/index.ts:
   {"pollingInterval":500}
+/packages/pkg-2/src/package.json:
+  {"pollingInterval":2000}
 /packages/pkg-2/src/utils.ts:
   {"pollingInterval":500}
 /packages/pkg-2/tsconfig.json:
@@ -715,6 +720,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /packages/pkg-2/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/pkg-2/src/package.json 2000 undefined Project: /packages/pkg-2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/pkg-2/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/pkg-2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -803,6 +809,9 @@ watchedFiles::
   {"pollingInterval":250}
 /packages/pkg-2/src/index.ts:
   {"pollingInterval":500}
+/packages/pkg-2/src/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000} *new*
 /packages/pkg-2/src/utils.ts:
   {"pollingInterval":500}
 /packages/pkg-2/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_pnpm1.js b/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_pnpm1.js
index cfb9d0395bf7c..b854f96bde5c2 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_pnpm1.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/importNameCodeFix_pnpm1.js
@@ -60,6 +60,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -103,6 +108,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -146,8 +156,23 @@ watchedFiles::
   {"pollingInterval":500}
 /project/index.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -227,8 +252,23 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -428,8 +468,23 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpm1.js b/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpm1.js
index 041021dd4376d..fc17a2fc4cebe 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpm1.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpm1.js
@@ -60,6 +60,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -103,6 +108,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -146,8 +156,23 @@ watchedFiles::
   {"pollingInterval":500}
 /project/index.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -227,8 +252,23 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -396,8 +436,23 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpmTransitive.js b/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpmTransitive.js
index 8b1933109a431..ab03f2f35aa49 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpmTransitive.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/importStatementCompletions_pnpmTransitive.js
@@ -66,6 +66,14 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/csstype@3.0.8/node_modules/csstype/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/csstype@3.0.8/node_modules/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/csstype@3.0.8/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -112,6 +120,14 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/csstype@3.0.8/node_modules/csstype/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/csstype@3.0.8/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/csstype@3.0.8/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.pnpm/@types+react@17.0.7/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -158,10 +174,34 @@ watchedFiles::
   {"pollingInterval":500}
 /project/index.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/csstype@3.0.8/node_modules/csstype/index.d.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.pnpm/csstype@3.0.8/node_modules/csstype/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/csstype@3.0.8/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/csstype@3.0.8/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -246,10 +286,34 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/node_modules/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/@types+react@17.0.7/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/node_modules/.pnpm/csstype@3.0.8/node_modules/csstype/index.d.ts:
   {"pollingInterval":500}
+/project/node_modules/.pnpm/csstype@3.0.8/node_modules/csstype/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/csstype@3.0.8/node_modules/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/csstype@3.0.8/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
+/project/node_modules/.pnpm/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /project/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/importSuggestionsCache_moduleAugmentation.js b/tests/baselines/reference/tsserver/fourslashServer/importSuggestionsCache_moduleAugmentation.js
index 2bc916334c55f..619e2926ffb4d 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/importSuggestionsCache_moduleAugmentation.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/importSuggestionsCache_moduleAugmentation.js
@@ -67,6 +67,7 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 5
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/react/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/react/package.json 2000 undefined Project: /tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -113,6 +114,7 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /node_modules/@types/react/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -158,6 +160,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/react/index.d.ts: *new*
   {"pollingInterval":500}
+/node_modules/@types/react/package.json: *new*
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -239,6 +244,9 @@ watchedFiles::
   {"pollingInterval":500}
 /node_modules/@types/react/index.d.ts:
   {"pollingInterval":500}
+/node_modules/@types/react/package.json:
+  {"pollingInterval":2000}
+  {"pollingInterval":2000}
 /tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/projectInfo01.js b/tests/baselines/reference/tsserver/fourslashServer/projectInfo01.js
index e26ebaa610540..972de0d331ade 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/projectInfo01.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/projectInfo01.js
@@ -44,6 +44,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -82,8 +84,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -180,6 +186,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -229,6 +237,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -250,11 +260,21 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
+watchedFiles *deleted*::
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+
 watchedDirectoriesRecursive::
 /tests/cases/fourslash/node_modules:
   {} *new*
@@ -357,6 +377,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
@@ -413,6 +435,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -436,11 +460,21 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000} *new*
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
+watchedFiles *deleted*::
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
+
 watchedDirectoriesRecursive::
 /tests/cases/fourslash/node_modules:
   {} *new*
@@ -597,8 +631,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts:
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json:
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/jsconfig.json:
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json:
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/projectInfo02.js b/tests/baselines/reference/tsserver/fourslashServer/projectInfo02.js
index 4b4afd0848c7e..e9fd6f142e51d 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/projectInfo02.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/projectInfo02.js
@@ -60,6 +60,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Type roots
@@ -121,8 +123,12 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/b.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/projectWithNonExistentFiles.js b/tests/baselines/reference/tsserver/fourslashServer/projectWithNonExistentFiles.js
index 3b01dfa762e9b..240db7c174992 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/projectWithNonExistentFiles.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/projectWithNonExistentFiles.js
@@ -61,6 +61,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/c.ts 500 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /tests/cases/fourslash/server/tsconfig.json WatchType: Type roots
@@ -147,10 +149,14 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/b.ts: *new*
   {"pollingInterval":500}
 /tests/cases/fourslash/server/c.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/fourslashServer/typedefinition01.js b/tests/baselines/reference/tsserver/fourslashServer/typedefinition01.js
index 6d63fdd8d8298..063f12eef2d2b 100644
--- a/tests/baselines/reference/tsserver/fourslashServer/typedefinition01.js
+++ b/tests/baselines/reference/tsserver/fourslashServer/typedefinition01.js
@@ -39,6 +39,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/four
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /lib.decorators.legacy.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tests/cases/fourslash/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/server/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /tests/cases/fourslash/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -80,10 +82,14 @@ watchedFiles::
   {"pollingInterval":500}
 /lib.decorators.legacy.d.ts: *new*
   {"pollingInterval":500}
+/tests/cases/fourslash/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/a.ts: *new*
   {"pollingInterval":500}
 /tests/cases/fourslash/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/tests/cases/fourslash/server/package.json: *new*
+  {"pollingInterval":2000}
 /tests/cases/fourslash/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/getMoveToRefactoringFileSuggestions/works-for-suggesting-a-list-of-files,-excluding-node_modules-within-a-project.js b/tests/baselines/reference/tsserver/getMoveToRefactoringFileSuggestions/works-for-suggesting-a-list-of-files,-excluding-node_modules-within-a-project.js
index 7e6c624059626..3ffa983a83b42 100644
--- a/tests/baselines/reference/tsserver/getMoveToRefactoringFileSuggestions/works-for-suggesting-a-list-of-files,-excluding-node_modules-within-a-project.js
+++ b/tests/baselines/reference/tsserver/getMoveToRefactoringFileSuggestions/works-for-suggesting-a-list-of-files,-excluding-node_modules-within-a-project.js
@@ -69,6 +69,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/d/e/file3.ts
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /project/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /project/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/@types/node/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/@types/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /project/node_modules/.cache/package.json 2000 undefined Project: /project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/project/tsconfig.json' (Configured)
@@ -223,6 +226,12 @@ After request
 PolledWatches::
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
+/project/node_modules/.cache/package.json: *new*
+  {"pollingInterval":2000}
+/project/node_modules/@types/node/package.json: *new*
+  {"pollingInterval":2000}
+/project/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /project/a/file4.ts: *new*
diff --git a/tests/baselines/reference/tsserver/inferredProjects/create-inferred-project.js b/tests/baselines/reference/tsserver/inferredProjects/create-inferred-project.js
index 0900e4e4f83bd..a0f6db17d3cd1 100644
--- a/tests/baselines/reference/tsserver/inferredProjects/create-inferred-project.js
+++ b/tests/baselines/reference/tsserver/inferredProjects/create-inferred-project.js
@@ -42,6 +42,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/module.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -80,10 +82,14 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/inferredProjects/when-existing-inferred-project-has-no-root-files.js b/tests/baselines/reference/tsserver/inferredProjects/when-existing-inferred-project-has-no-root-files.js
index c8a8a155a5687..4fc4c5fd7d010 100644
--- a/tests/baselines/reference/tsserver/inferredProjects/when-existing-inferred-project-has-no-root-files.js
+++ b/tests/baselines/reference/tsserver/inferredProjects/when-existing-inferred-project-has-no-root-files.js
@@ -65,6 +65,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 un
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module3/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -109,10 +111,14 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -185,8 +191,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -258,6 +268,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/module.d.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
@@ -278,6 +290,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module3/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -304,10 +318,20 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -501,10 +525,14 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/libraryResolution/with-config-with-redirection.js b/tests/baselines/reference/tsserver/libraryResolution/with-config-with-redirection.js
index bb8e02d273292..024e08a860d69 100644
--- a/tests/baselines/reference/tsserver/libraryResolution/with-config-with-redirection.js
+++ b/tests/baselines/reference/tsserver/libraryResolution/with-config-with-redirection.js
@@ -227,6 +227,21 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/utils.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -246,6 +261,13 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/node_modules 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
@@ -263,6 +285,13 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-s
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-scripthost' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -278,10 +307,34 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-e
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-es5' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Info seq  [hh:mm:ss:mss] Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -302,6 +355,17 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-d
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -430,8 +494,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules: *new*
   {"pollingInterval":500}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/projects/project1/core.d.ts: *new*
@@ -573,9 +645,90 @@ ScriptInfos::
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.jsonFailedLookupInvalidation
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
@@ -583,7 +736,7 @@ Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-dom' from 'node_modules
 Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Scoped package detected, looking in 'typescript__lib-dom'
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom.ts' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom.tsx' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom.d.ts' does not exist.
@@ -610,6 +763,10 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
@@ -682,8 +839,16 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -833,6 +998,63 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
@@ -1011,11 +1233,63 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 4 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
@@ -1172,6 +1446,58 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
@@ -1190,7 +1516,62 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-d
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 5 projectProgramVersion: 3 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
@@ -1381,9 +1762,57 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project1/tsconfig.json : {
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1,/home/src/projects/project1/typeroot2'. ========
 Info seq  [hh:mm:ss:mss] Resolving with primary search path '/home/src/projects/project1/typeroot1, /home/src/projects/project1/typeroot2'.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1392,6 +1821,13 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/in
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 6 projectProgramVersion: 4 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -1460,8 +1896,16 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/typeroot2: *new*
   {"pollingInterval":500}
 
@@ -1621,9 +2065,57 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project1/tsconfig.json : {
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Info seq  [hh:mm:ss:mss] Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1664,6 +2156,10 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 7 projectProgramVersion: 5 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -1754,8 +2250,16 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project1/typeroot2:
@@ -1916,13 +2420,34 @@ ScriptInfos::
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.jsonFailedLookupInvalidation
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Scoped package detected, looking in 'typescript__lib-webworker'
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker.ts' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker.tsx' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker.d.ts' does not exist.
@@ -1949,11 +2474,50 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-webworker' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 8 projectProgramVersion: 6 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
@@ -2022,8 +2586,16 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts:
@@ -2198,6 +2770,55 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -2213,10 +2834,62 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-w
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-scripthost/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-scripthost/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-es5/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-es5/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 9 projectProgramVersion: 7 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
diff --git a/tests/baselines/reference/tsserver/libraryResolution/with-config.js b/tests/baselines/reference/tsserver/libraryResolution/with-config.js
index 2b734b081e5f8..358db584a786a 100644
--- a/tests/baselines/reference/tsserver/libraryResolution/with-config.js
+++ b/tests/baselines/reference/tsserver/libraryResolution/with-config.js
@@ -188,6 +188,21 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/utils.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/index.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -218,6 +233,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/node_modules 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.webworker.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
@@ -245,6 +264,10 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-scripthost' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.scripthost.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
@@ -272,11 +295,32 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-es5' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.es5.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Info seq  [hh:mm:ss:mss] Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
@@ -308,7 +352,15 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/lib/lib.dom.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/sometype/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1/package.json 2000 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot1 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -437,8 +489,16 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules: *new*
   {"pollingInterval":500}
+/home/src/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /home/src/lib/lib.dom.d.ts: *new*
@@ -553,6 +613,54 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
@@ -571,7 +679,58 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-d
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -765,6 +924,57 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
@@ -939,11 +1149,57 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 4 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
@@ -1092,9 +1348,67 @@ ScriptInfos::
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.jsonFailedLookupInvalidation
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
@@ -1102,7 +1416,7 @@ Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-dom' from 'node_modules
 Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Scoped package detected, looking in 'typescript__lib-dom'
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom.ts' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom.tsx' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom.d.ts' does not exist.
@@ -1129,6 +1443,10 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 5 projectProgramVersion: 3 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
@@ -1319,9 +1637,48 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project1/tsconfig.json : {
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1,/home/src/projects/project1/typeroot2'. ========
 Info seq  [hh:mm:ss:mss] Resolving with primary search path '/home/src/projects/project1/typeroot1, /home/src/projects/project1/typeroot2'.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1330,6 +1687,10 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/in
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project1/typeroot1/sometype/index.d.ts', result '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Type reference directive 'sometype' was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts', primary: true. ========
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 6 projectProgramVersion: 4 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -1398,8 +1759,16 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/typeroot2: *new*
   {"pollingInterval":500}
 
@@ -1565,9 +1934,48 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project1/tsconfig.json : {
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving type reference directive 'sometype', containing file '/home/src/projects/project1/__inferred type names__.ts', root directory '/home/src/projects/project1/typeroot1'. ========
 Info seq  [hh:mm:ss:mss] Resolving with primary search path '/home/src/projects/project1/typeroot1'.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype.d.ts' does not exist.
@@ -1590,6 +1998,13 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-d
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-dom' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project1/typeroot2 1 undefined Project: /home/src/projects/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 7 projectProgramVersion: 5 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -1651,8 +2066,16 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 1
 
 PolledWatches::
+/home/src/projects/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project1/node_modules:
   {"pollingInterval":500}
+/home/src/projects/project1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project1/typeroot1/sometype/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project1/typeroot2:
@@ -1818,6 +2241,52 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -1833,10 +2302,59 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-w
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts', result '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-webworker' was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-webworker/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 8 projectProgramVersion: 6 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
@@ -2038,13 +2556,38 @@ ScriptInfos::
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.jsonFailedLookupInvalidation
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-webworker' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.webworker.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module '@typescript/lib-webworker' from 'node_modules' folder, target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project1/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Scoped package detected, looking in 'typescript__lib-webworker'
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker.ts' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker.tsx' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-webworker.d.ts' does not exist.
@@ -2071,10 +2614,46 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name '@typescript/lib-webworker' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-scripthost' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es5' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.es5.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/home/src/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/sometype/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/typeroot1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of type reference directive 'sometype' from '/home/src/projects/project1/__inferred type names__.ts' of old program, it was successfully resolved to '/home/src/projects/project1/typeroot1/sometype/index.d.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-dom' from '/home/src/projects/project1/__lib_node_modules_lookup_lib.dom.d.ts__.ts' of old program, it was successfully resolved to '/home/src/projects/node_modules/@typescript/lib-dom/index.d.ts'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/lib-dom/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/@typescript/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project1/tsconfig.json projectStateVersion: 9 projectProgramVersion: 7 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project1/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (9)
diff --git a/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/handles-resolutions-when-currentNodeModulesDepth-changes-when-referencing-file-from-another-file.js b/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/handles-resolutions-when-currentNodeModulesDepth-changes-when-referencing-file-from-another-file.js
index 29f5be22b52c9..07ec0cde5a1fa 100644
--- a/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/handles-resolutions-when-currentNodeModulesDepth-changes-when-referencing-file-from-another-file.js
+++ b/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/handles-resolutions-when-currentNodeModulesDepth-changes-when-referencing-file-from-another-file.js
@@ -55,6 +55,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project1/src/node_modules/minimatch/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project1/src/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project1/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project1/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project1/src/node_modules/glob/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project1/src/node_modules/path/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -81,10 +88,24 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 TI:: Creating typing installer
 
 PolledWatches::
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project1/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/project1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project1/src/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/glob/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/minimatch/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/path/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project1/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/project1/tsconfig.json: *new*
@@ -287,10 +308,24 @@ PolledWatches::
   {"pollingInterval":500}
 /node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project1/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/project1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project1/src/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/glob/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/minimatch/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/node_modules/path/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project1/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project1/src/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/project1/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/should-be-set-to-2-if-the-project-has-js-root-files.js b/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/should-be-set-to-2-if-the-project-has-js-root-files.js
index 546988acec8be..97b510ee16911 100644
--- a/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/should-be-set-to-2-if-the-project-has-js-root-files.js
+++ b/tests/baselines/reference/tsserver/maxNodeModuleJsDepth/should-be-set-to-2-if-the-project-has-js-root-files.js
@@ -22,6 +22,8 @@ Info seq  [hh:mm:ss:mss] For info: /a/b/file1.js :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/test/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
@@ -39,6 +41,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 TI:: Creating typing installer
 
 PolledWatches::
+/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/node_modules/test/package.json: *new*
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
 
@@ -202,6 +208,10 @@ After request
 PolledWatches::
 /a/b/bower_components: *new*
   {"pollingInterval":500}
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
+/a/b/node_modules/test/package.json:
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
 
diff --git a/tests/baselines/reference/tsserver/moduleResolution/alternateResult.js b/tests/baselines/reference/tsserver/moduleResolution/alternateResult.js
index c5a8d414c45f5..10db7fb51ffbe 100644
--- a/tests/baselines/reference/tsserver/moduleResolution/alternateResult.js
+++ b/tests/baselines/reference/tsserver/moduleResolution/alternateResult.js
@@ -395,10 +395,8 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Default library for target 'es5'
 	node_modules/foo2/index.d.ts
 	  Imported via "foo2" from file 'index.mts' with packageId 'foo2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo2/package.json' does not have field "type"
 	node_modules/@types/bar2/index.d.ts
 	  Imported via "bar2" from file 'index.mts' with packageId '@types/bar2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar2/package.json' does not have field "type"
 	index.mts
 	  Part of 'files' list in tsconfig.json
 
@@ -2151,13 +2149,10 @@ Info seq  [hh:mm:ss:mss] 	Files (5)
 	  Default library for target 'es5'
 	node_modules/@types/bar/index.d.ts
 	  Imported via "bar" from file 'index.mts' with packageId '@types/bar/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar/package.json' does not have field "type"
 	node_modules/foo2/index.d.ts
 	  Imported via "foo2" from file 'index.mts' with packageId 'foo2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo2/package.json' does not have field "type"
 	node_modules/@types/bar2/index.d.ts
 	  Imported via "bar2" from file 'index.mts' with packageId '@types/bar2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar2/package.json' does not have field "type"
 	index.mts
 	  Part of 'files' list in tsconfig.json
 
@@ -2475,16 +2470,12 @@ Info seq  [hh:mm:ss:mss] 	Files (6)
 	  Default library for target 'es5'
 	node_modules/foo/index.d.ts
 	  Imported via "foo" from file 'index.mts' with packageId 'foo/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo/package.json' does not have field "type"
 	node_modules/@types/bar/index.d.ts
 	  Imported via "bar" from file 'index.mts' with packageId '@types/bar/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar/package.json' does not have field "type"
 	node_modules/foo2/index.d.ts
 	  Imported via "foo2" from file 'index.mts' with packageId 'foo2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo2/package.json' does not have field "type"
 	node_modules/@types/bar2/index.d.ts
 	  Imported via "bar2" from file 'index.mts' with packageId '@types/bar2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar2/package.json' does not have field "type"
 	index.mts
 	  Part of 'files' list in tsconfig.json
 
@@ -2870,13 +2861,10 @@ Info seq  [hh:mm:ss:mss] 	Files (5)
 	  Default library for target 'es5'
 	node_modules/foo/index.d.ts
 	  Imported via "foo" from file 'index.mts' with packageId 'foo/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo/package.json' does not have field "type"
 	node_modules/@types/bar/index.d.ts
 	  Imported via "bar" from file 'index.mts' with packageId '@types/bar/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar/package.json' does not have field "type"
 	node_modules/foo2/index.d.ts
 	  Imported via "foo2" from file 'index.mts' with packageId 'foo2/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo2/package.json' does not have field "type"
 	index.mts
 	  Part of 'files' list in tsconfig.json
 
@@ -3250,10 +3238,8 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Default library for target 'es5'
 	node_modules/foo/index.d.ts
 	  Imported via "foo" from file 'index.mts' with packageId 'foo/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/foo/package.json' does not have field "type"
 	node_modules/@types/bar/index.d.ts
 	  Imported via "bar" from file 'index.mts' with packageId '@types/bar/index.d.ts@1.0.0'
-	  File is CommonJS module because 'node_modules/@types/bar/package.json' does not have field "type"
 	index.mts
 	  Part of 'files' list in tsconfig.json
 
diff --git a/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project-built.js b/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project-built.js
index 2f79af6bc9539..ec73afa92c899 100644
--- a/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project-built.js
+++ b/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project-built.js
@@ -137,7 +137,7 @@ export * from "./subfolder";
 //# sourceMappingURL=index.d.ts.map
 
 //// [/home/src/projects/project/packages/package-a/build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.es2021.d.ts","../src/subfolder/index.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},{"version":"-11228512861-export const FOO = \"bar\";","signature":"-8746013027-export declare const FOO = \"bar\";\n"},{"version":"-16576232793-export * from \"./subfolder\";","signature":"-14439737455-export * from \"./subfolder\";\n"}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"declarationMap":true,"esModuleInterop":true,"module":99,"outDir":"./","rootDir":"../src","target":8,"tsBuildInfoFile":"./tsconfig.tsbuildinfo"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.es2021.d.ts","../src/subfolder/index.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-11228512861-export const FOO = \"bar\";","signature":"-8746013027-export declare const FOO = \"bar\";\n","impliedFormat":99},{"version":"-16576232793-export * from \"./subfolder\";","signature":"-14439737455-export * from \"./subfolder\";\n","impliedFormat":99}],"root":[2,3],"options":{"allowSyntheticDefaultImports":true,"composite":true,"declarationMap":true,"esModuleInterop":true,"module":99,"outDir":"./","rootDir":"../src","target":8,"tsBuildInfoFile":"./tsconfig.tsbuildinfo"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project/packages/package-a/build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -156,27 +156,33 @@ export * from "./subfolder";
       "../../../../../../../a/lib/lib.es2021.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/subfolder/index.ts": {
         "original": {
           "version": "-11228512861-export const FOO = \"bar\";",
-          "signature": "-8746013027-export declare const FOO = \"bar\";\n"
+          "signature": "-8746013027-export declare const FOO = \"bar\";\n",
+          "impliedFormat": 99
         },
         "version": "-11228512861-export const FOO = \"bar\";",
-        "signature": "-8746013027-export declare const FOO = \"bar\";\n"
+        "signature": "-8746013027-export declare const FOO = \"bar\";\n",
+        "impliedFormat": "esnext"
       },
       "../src/index.ts": {
         "original": {
           "version": "-16576232793-export * from \"./subfolder\";",
-          "signature": "-14439737455-export * from \"./subfolder\";\n"
+          "signature": "-14439737455-export * from \"./subfolder\";\n",
+          "impliedFormat": 99
         },
         "version": "-16576232793-export * from \"./subfolder\";",
-        "signature": "-14439737455-export * from \"./subfolder\";\n"
+        "signature": "-14439737455-export * from \"./subfolder\";\n",
+        "impliedFormat": "esnext"
       }
     },
     "root": [
@@ -213,7 +219,7 @@ export * from "./subfolder";
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1215
+  "size": 1271
 }
 
 //// [/home/src/projects/project/packages/package-b/build/index.js]
@@ -229,7 +235,7 @@ export {};
 //# sourceMappingURL=index.d.ts.map
 
 //// [/home/src/projects/project/packages/package-b/build/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.es2021.d.ts","../../package-a/build/subfolder/index.d.ts","../../package-a/build/index.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true},"-8746013027-export declare const FOO = \"bar\";\n","-14439737455-export * from \"./subfolder\";\n",{"version":"-5331409584-import { FOO } from \"package-a\";\nconsole.log(FOO);\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"allowSyntheticDefaultImports":true,"composite":true,"declarationMap":true,"esModuleInterop":true,"module":99,"outDir":"./","rootDir":"../src","target":8,"tsBuildInfoFile":"./tsconfig.tsbuildinfo"},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.es2021.d.ts","../../package-a/build/subfolder/index.d.ts","../../package-a/build/index.d.ts","../src/index.ts"],"fileInfos":[{"version":"3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };","affectsGlobalScope":true,"impliedFormat":1},{"version":"-8746013027-export declare const FOO = \"bar\";\n","impliedFormat":99},{"version":"-14439737455-export * from \"./subfolder\";\n","impliedFormat":99},{"version":"-5331409584-import { FOO } from \"package-a\";\nconsole.log(FOO);\n","signature":"-3531856636-export {};\n","impliedFormat":99}],"root":[4],"options":{"allowSyntheticDefaultImports":true,"composite":true,"declarationMap":true,"esModuleInterop":true,"module":99,"outDir":"./","rootDir":"../src","target":8,"tsBuildInfoFile":"./tsconfig.tsbuildinfo"},"fileIdsList":[[2],[3]],"referencedMap":[[3,1],[4,2]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/home/src/projects/project/packages/package-b/build/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -252,27 +258,41 @@ export {};
       "../../../../../../../a/lib/lib.es2021.d.ts": {
         "original": {
           "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
         "signature": "3858781397-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }\ninterface ReadonlyArray<T> {}\ndeclare const console: { log(msg: any): void; };",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../package-a/build/subfolder/index.d.ts": {
+        "original": {
+          "version": "-8746013027-export declare const FOO = \"bar\";\n",
+          "impliedFormat": 99
+        },
         "version": "-8746013027-export declare const FOO = \"bar\";\n",
-        "signature": "-8746013027-export declare const FOO = \"bar\";\n"
+        "signature": "-8746013027-export declare const FOO = \"bar\";\n",
+        "impliedFormat": "esnext"
       },
       "../../package-a/build/index.d.ts": {
+        "original": {
+          "version": "-14439737455-export * from \"./subfolder\";\n",
+          "impliedFormat": 99
+        },
         "version": "-14439737455-export * from \"./subfolder\";\n",
-        "signature": "-14439737455-export * from \"./subfolder\";\n"
+        "signature": "-14439737455-export * from \"./subfolder\";\n",
+        "impliedFormat": "esnext"
       },
       "../src/index.ts": {
         "original": {
           "version": "-5331409584-import { FOO } from \"package-a\";\nconsole.log(FOO);\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 99
         },
         "version": "-5331409584-import { FOO } from \"package-a\";\nconsole.log(FOO);\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "esnext"
       }
     },
     "root": [
@@ -309,7 +329,7 @@ export {};
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1261
+  "size": 1360
 }
 
 
@@ -395,6 +415,8 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project/packages/package-a/t
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/tsconfig.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src 1 undefined Config: /home/src/projects/project/packages/package-a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src 1 undefined Config: /home/src/projects/project/packages/package-a/tsconfig.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package-b/package.json'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package-a' from '/home/src/projects/project/packages/package-b/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
 Info seq  [hh:mm:ss:mss] Resolving in CJS mode with conditions 'import', 'types'.
@@ -407,8 +429,8 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/pac
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package-a.js' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package-a.jsx' does not exist.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project/packages/package-b/package-a' does not exist, skipping all lookups in it.
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist.
-Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package-b/package.json'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Loading module 'package-a' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.
 Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project/packages/package-b/src/node_modules' does not exist, skipping all lookups in it.
@@ -423,6 +445,8 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package-a
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package-a/build/index.d.ts', result '/home/src/projects/project/packages/package-a/build/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package-a' was successfully resolved to '/home/src/projects/project/packages/package-a/build/index.d.ts' with Package ID 'package-a/build/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package-a/package.json'.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module './subfolder' from '/home/src/projects/project/packages/package-a/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Using compiler options of project reference redirect '/home/src/projects/project/packages/package-a/tsconfig.json'.
@@ -439,6 +463,9 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src
 Info seq  [hh:mm:ss:mss] ======== Module name './subfolder' was successfully resolved to '/home/src/projects/project/packages/package-a/src/subfolder/index.ts'. ========
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/subfolder/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-es2021' from '/home/src/projects/project/packages/package-b/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
@@ -475,6 +502,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2021.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
@@ -486,6 +516,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b 0 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Type roots
@@ -507,10 +540,13 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Library 'lib.es2021.d.ts' specified in compilerOptions
 	../package-a/src/subfolder/index.ts
 	  Imported via "./subfolder" from file '../package-a/src/index.ts'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	../package-a/src/index.ts
 	  Imported via "package-a" from file 'src/index.ts' with packageId 'package-a/build/index.d.ts@1.0.0'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	src/index.ts
 	  Matched by include pattern './src/**/*.ts' in 'tsconfig.json'
+	  File is ECMAScript module because 'package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package.json 250 undefined WatchType: package.json file
@@ -617,12 +653,18 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-a/src/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project/packages/package-a/src/subfolder/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package-b/node_modules: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/node_modules/@types: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/package-a: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-b/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2021.d.ts: *new*
@@ -846,6 +888,18 @@ Before running Timeout callback:: count: 1
 2: checkOne
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/subfolder/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package-aX' from '/home/src/projects/project/packages/package-b/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
 Info seq  [hh:mm:ss:mss] Resolving in CJS mode with conditions 'import', 'types'.
@@ -885,6 +939,9 @@ Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package-aX' was not resolved. ========
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es2021' from '/home/src/projects/project/packages/package-b/__lib_node_modules_lookup_lib.es2021.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
@@ -892,6 +949,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -905,6 +964,7 @@ Info seq  [hh:mm:ss:mss] 	Files (2)
 	  Library 'lib.es2021.d.ts' specified in compilerOptions
 	src/index.ts
 	  Matched by include pattern './src/**/*.ts' in 'tsconfig.json'
+	  File is ECMAScript module because 'package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] event:
@@ -936,8 +996,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/package-aX: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-b/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
+/home/src/projects/project/packages/package-a/src/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project/packages/package-a/src/subfolder/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package-b/package-a:
   {"pollingInterval":500}
 
@@ -1142,6 +1208,13 @@ Before running Timeout callback:: count: 1
 3: checkOne
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package-a' from '/home/src/projects/project/packages/package-b/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
 Info seq  [hh:mm:ss:mss] Resolving in CJS mode with conditions 'import', 'types'.
@@ -1169,6 +1242,8 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package-a
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package-a/build/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package-a/build/index.d.ts', result '/home/src/projects/project/packages/package-a/build/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package-a' was successfully resolved to '/home/src/projects/project/packages/package-a/build/index.d.ts' with Package ID 'package-a/build/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module './subfolder' from '/home/src/projects/project/packages/package-a/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Using compiler options of project reference redirect '/home/src/projects/project/packages/package-a/tsconfig.json'.
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
@@ -1184,12 +1259,20 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src
 Info seq  [hh:mm:ss:mss] ======== Module name './subfolder' was successfully resolved to '/home/src/projects/project/packages/package-a/src/subfolder/index.ts'. ========
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/subfolder/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es2021' from '/home/src/projects/project/packages/package-b/__lib_node_modules_lookup_lib.es2021.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -1205,10 +1288,13 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Library 'lib.es2021.d.ts' specified in compilerOptions
 	../package-a/src/subfolder/index.ts
 	  Imported via "./subfolder" from file '../package-a/src/index.ts'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	../package-a/src/index.ts
 	  Imported via "package-a" from file 'src/index.ts' with packageId 'package-a/build/index.d.ts@1.0.0'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	src/index.ts
 	  Matched by include pattern './src/**/*.ts' in 'tsconfig.json'
+	  File is ECMAScript module because 'package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] event:
@@ -1234,12 +1320,18 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-a/src/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project/packages/package-a/src/subfolder/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package-b/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/node_modules/@types:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/package-a: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-b/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package-b/package-aX:
diff --git a/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project.js b/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project.js
index 55804c22cd180..be544a2891b12 100644
--- a/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project.js
+++ b/tests/baselines/reference/tsserver/moduleResolution/using-referenced-project.js
@@ -197,6 +197,8 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project/packages/package-a/t
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/tsconfig.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src 1 undefined Config: /home/src/projects/project/packages/package-a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src 1 undefined Config: /home/src/projects/project/packages/package-a/tsconfig.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package-b/package.json'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package-a' from '/home/src/projects/project/packages/package-b/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
 Info seq  [hh:mm:ss:mss] Resolving in CJS mode with conditions 'import', 'types'.
@@ -209,8 +211,8 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/pac
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package-a.js' does not exist.
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package-a.jsx' does not exist.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project/packages/package-b/package-a' does not exist, skipping all lookups in it.
-Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist.
-Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package-b/package.json'.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Loading module 'package-a' from 'node_modules' folder, target file types: TypeScript, JavaScript, Declaration, JSON.
 Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] Directory '/home/src/projects/project/packages/package-b/src/node_modules' does not exist, skipping all lookups in it.
@@ -225,6 +227,8 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package-a
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package-a/build/index.d.ts', result '/home/src/projects/project/packages/package-a/build/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package-a' was successfully resolved to '/home/src/projects/project/packages/package-a/build/index.d.ts' with Package ID 'package-a/build/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package-a/package.json'.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module './subfolder' from '/home/src/projects/project/packages/package-a/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Using compiler options of project reference redirect '/home/src/projects/project/packages/package-a/tsconfig.json'.
@@ -241,6 +245,9 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src
 Info seq  [hh:mm:ss:mss] ======== Module name './subfolder' was successfully resolved to '/home/src/projects/project/packages/package-a/src/subfolder/index.ts'. ========
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/subfolder/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module '@typescript/lib-es2021' from '/home/src/projects/project/packages/package-b/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Node10'.
@@ -277,6 +284,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2021.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
@@ -288,6 +298,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/project
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b 0 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Type roots
@@ -309,10 +322,13 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Library 'lib.es2021.d.ts' specified in compilerOptions
 	../package-a/src/subfolder/index.ts
 	  Imported via "./subfolder" from file '../package-a/src/index.ts'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	../package-a/src/index.ts
 	  Imported via "package-a" from file 'src/index.ts' with packageId 'package-a/build/index.d.ts@1.0.0'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	src/index.ts
 	  Matched by include pattern './src/**/*.ts' in 'tsconfig.json'
+	  File is ECMAScript module because 'package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package.json 250 undefined WatchType: package.json file
@@ -419,12 +435,18 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-a/src/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project/packages/package-a/src/subfolder/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package-b/node_modules: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/node_modules/@types: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/package-a: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-b/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2021.d.ts: *new*
@@ -648,6 +670,18 @@ Before running Timeout callback:: count: 1
 2: checkOne
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/subfolder/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package-aX' from '/home/src/projects/project/packages/package-b/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
 Info seq  [hh:mm:ss:mss] Resolving in CJS mode with conditions 'import', 'types'.
@@ -687,6 +721,9 @@ Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package-aX' was not resolved. ========
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es2021' from '/home/src/projects/project/packages/package-b/__lib_node_modules_lookup_lib.es2021.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
@@ -694,6 +731,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -707,6 +746,7 @@ Info seq  [hh:mm:ss:mss] 	Files (2)
 	  Library 'lib.es2021.d.ts' specified in compilerOptions
 	src/index.ts
 	  Matched by include pattern './src/**/*.ts' in 'tsconfig.json'
+	  File is ECMAScript module because 'package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] event:
@@ -738,8 +778,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/package-aX: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-b/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
+/home/src/projects/project/packages/package-a/src/package.json:
+  {"pollingInterval":2000}
+/home/src/projects/project/packages/package-a/src/subfolder/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package-b/package-a:
   {"pollingInterval":500}
 
@@ -944,6 +990,13 @@ Before running Timeout callback:: count: 1
 3: checkOne
 
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-b/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package-a' from '/home/src/projects/project/packages/package-b/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
 Info seq  [hh:mm:ss:mss] Resolving in CJS mode with conditions 'import', 'types'.
@@ -971,6 +1024,8 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package-a
 Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package-a/build/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package-a/build/index.d.ts', result '/home/src/projects/project/packages/package-a/build/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package-a' was successfully resolved to '/home/src/projects/project/packages/package-a/build/index.d.ts' with Package ID 'package-a/build/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module './subfolder' from '/home/src/projects/project/packages/package-a/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Using compiler options of project reference redirect '/home/src/projects/project/packages/package-a/tsconfig.json'.
 Info seq  [hh:mm:ss:mss] Explicitly specified module resolution kind: 'Bundler'.
@@ -986,12 +1041,20 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src
 Info seq  [hh:mm:ss:mss] ======== Module name './subfolder' was successfully resolved to '/home/src/projects/project/packages/package-a/src/subfolder/index.ts'. ========
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/subfolder/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package-a/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '@typescript/lib-es2021' from '/home/src/projects/project/packages/package-b/__lib_node_modules_lookup_lib.es2021.d.ts__.ts' of old program, it was not resolved.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-b/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package-a 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/subfolder/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package-a/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package-b/package-aX 1 undefined Project: /home/src/projects/project/packages/package-b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package-b/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -1007,10 +1070,13 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 	  Library 'lib.es2021.d.ts' specified in compilerOptions
 	../package-a/src/subfolder/index.ts
 	  Imported via "./subfolder" from file '../package-a/src/index.ts'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	../package-a/src/index.ts
 	  Imported via "package-a" from file 'src/index.ts' with packageId 'package-a/build/index.d.ts@1.0.0'
+	  File is ECMAScript module because '../package-a/package.json' has field "type" with value "module"
 	src/index.ts
 	  Matched by include pattern './src/**/*.ts' in 'tsconfig.json'
+	  File is ECMAScript module because 'package.json' has field "type" with value "module"
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] event:
@@ -1036,12 +1102,18 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-a/src/package.json: *new*
+  {"pollingInterval":2000}
+/home/src/projects/project/packages/package-a/src/subfolder/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package-b/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/node_modules/@types:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package-b/package-a: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package-b/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package-b/package-aX:
diff --git a/tests/baselines/reference/tsserver/openfile/can-open-same-file-again.js b/tests/baselines/reference/tsserver/openfile/can-open-same-file-again.js
index 20afe699f5067..1a541d1b88aed 100644
--- a/tests/baselines/reference/tsserver/openfile/can-open-same-file-again.js
+++ b/tests/baselines/reference/tsserver/openfile/can-open-same-file-again.js
@@ -58,6 +58,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/someuser/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject 1 undefined Config: /user/someuser/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/someuser/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/src/package.json 2000 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/package.json 2000 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/someuser/projects/package.json 2000 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/node_modules/@types 1 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/node_modules/@types 1 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/node_modules/@types 1 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: Type roots
@@ -152,8 +155,14 @@ After request
 PolledWatches::
 /user/someuser/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/someuser/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/someuser/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/someuser/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/someuser/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/openfile/uses-existing-project-even-if-project-refresh-is-pending.js b/tests/baselines/reference/tsserver/openfile/uses-existing-project-even-if-project-refresh-is-pending.js
index 330e80eecb468..05876d1fe5e3f 100644
--- a/tests/baselines/reference/tsserver/openfile/uses-existing-project-even-if-project-refresh-is-pending.js
+++ b/tests/baselines/reference/tsserver/openfile/uses-existing-project-even-if-project-refresh-is-pending.js
@@ -57,6 +57,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/someuser/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject 1 undefined Config: /user/someuser/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/someuser/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/src/package.json 2000 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/package.json 2000 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/someuser/projects/package.json 2000 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/node_modules/@types 1 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/myproject/node_modules/@types 1 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/someuser/projects/node_modules/@types 1 undefined Project: /user/someuser/projects/myproject/tsconfig.json WatchType: Type roots
@@ -151,8 +154,14 @@ After request
 PolledWatches::
 /user/someuser/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/someuser/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/someuser/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/someuser/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/someuser/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/plugins/gets-external-files-with-config-file-reload.js b/tests/baselines/reference/tsserver/plugins/gets-external-files-with-config-file-reload.js
index 21bef2cc74e3a..c79ef6c4f40c8 100644
--- a/tests/baselines/reference/tsserver/plugins/gets-external-files-with-config-file-reload.js
+++ b/tests/baselines/reference/tsserver/plugins/gets-external-files-with-config-file-reload.js
@@ -74,6 +74,8 @@ PluginFactory Invoke
 Info seq  [hh:mm:ss:mss] Plugin validation succeeded
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/someFile.txt 500 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,10 +181,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/someFile.txt: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -341,10 +347,14 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/someOtherFile.txt: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/someFile.txt:
diff --git a/tests/baselines/reference/tsserver/plugins/new-files-with-non-ts-extensions-with-wildcard-matching.js b/tests/baselines/reference/tsserver/plugins/new-files-with-non-ts-extensions-with-wildcard-matching.js
index b34f51f1176e6..99b89f276af72 100644
--- a/tests/baselines/reference/tsserver/plugins/new-files-with-non-ts-extensions-with-wildcard-matching.js
+++ b/tests/baselines/reference/tsserver/plugins/new-files-with-non-ts-extensions-with-wildcard-matching.js
@@ -79,6 +79,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b.vue 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -184,8 +186,12 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -304,8 +310,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/plugins/when-scriptKind-changes-for-the-external-file.js b/tests/baselines/reference/tsserver/plugins/when-scriptKind-changes-for-the-external-file.js
index 6e9d27e1cdbd8..220a8fb16bab6 100644
--- a/tests/baselines/reference/tsserver/plugins/when-scriptKind-changes-for-the-external-file.js
+++ b/tests/baselines/reference/tsserver/plugins/when-scriptKind-changes-for-the-external-file.js
@@ -78,6 +78,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -182,10 +184,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/pluginsAsync/project-is-deferred-closed-before-plugins-are-loaded.js b/tests/baselines/reference/tsserver/pluginsAsync/project-is-deferred-closed-before-plugins-are-loaded.js
index fc0d13d1586de..98d94ffc22c5e 100644
--- a/tests/baselines/reference/tsserver/pluginsAsync/project-is-deferred-closed-before-plugins-are-loaded.js
+++ b/tests/baselines/reference/tsserver/pluginsAsync/project-is-deferred-closed-before-plugins-are-loaded.js
@@ -61,6 +61,8 @@ request import plugin-a
 awaiting config file delete
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/package.json 2000 undefined Project: /home/src/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules/@types 1 undefined Project: /home/src/projects/project/tsconfig.json WatchType: Type roots
@@ -155,8 +157,12 @@ After request
 PolledWatches::
 /home/src/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectErrors/correct-errors-when-resolution-resolves-to-file-that-has-same-ambient-module-and-is-also-module.js b/tests/baselines/reference/tsserver/projectErrors/correct-errors-when-resolution-resolves-to-file-that-has-same-ambient-module-and-is-also-module.js
index 4c0d3c4d186f0..bc16e8877bfdc 100644
--- a/tests/baselines/reference/tsserver/projectErrors/correct-errors-when-resolution-resolves-to-file-that-has-same-ambient-module-and-is-also-module.js
+++ b/tests/baselines/reference/tsserver/projectErrors/correct-errors-when-resolution-resolves-to-file-that-has-same-ambient-module-and-is-also-module.js
@@ -78,6 +78,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules 1 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules 1 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules/@custom/plugin/package.json 2000 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules/@custom/package.json 2000 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules/package.json 2000 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/src/package.json 2000 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules/@types 1 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules/@types 1 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -176,10 +182,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/users/username/projects/myproject/node_modules/@custom/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/node_modules/@custom/plugin/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectErrors/file-rename-on-wsl2.js b/tests/baselines/reference/tsserver/projectErrors/file-rename-on-wsl2.js
index fce8814afb895..3d41db29d8ff8 100644
--- a/tests/baselines/reference/tsserver/projectErrors/file-rename-on-wsl2.js
+++ b/tests/baselines/reference/tsserver/projectErrors/file-rename-on-wsl2.js
@@ -70,6 +70,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/src/b.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/username/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/src/package.json 2000 undefined Project: /home/username/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/package.json 2000 undefined Project: /home/username/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/username/project/node_modules/@types 1 undefined Project: /home/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/username/project/node_modules/@types 1 undefined Project: /home/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/username/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -167,6 +169,10 @@ After request
 PolledWatches::
 /home/username/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/username/project/package.json: *new*
+  {"pollingInterval":2000}
+/home/username/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -210,8 +216,12 @@ export const b = 10;
 PolledWatches::
 /home/username/project/node_modules/@types:
   {"pollingInterval":500}
+/home/username/project/package.json:
+  {"pollingInterval":2000}
 /home/username/project/src/b.ts: *new*
   {"pollingInterval":500}
+/home/username/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -318,6 +328,8 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/src/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/src/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/username/project/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/username/project/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/username/project/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/username/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -358,12 +370,16 @@ After request
 PolledWatches::
 /home/username/project/node_modules/@types:
   {"pollingInterval":500}
+/home/username/project/package.json:
+  {"pollingInterval":2000}
 /home/username/project/src/b.ts:
   {"pollingInterval":500}
 /home/username/project/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /home/username/project/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/username/project/src/package.json:
+  {"pollingInterval":2000}
 /home/username/project/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -530,6 +546,8 @@ Info seq  [hh:mm:ss:mss] 		Projects: /home/username/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] 	FileName: /home/username/project/src/c.ts ProjectRootPath: /home/username/project
 Info seq  [hh:mm:ss:mss] 		Projects: /home/username/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/username/project/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/username/project/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -569,8 +587,12 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /home/username/project/node_modules/@types:
   {"pollingInterval":500}
+/home/username/project/package.json:
+  {"pollingInterval":2000}
 /home/username/project/src/node_modules/@types:
   {"pollingInterval":500}
+/home/username/project/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/username/project/src/b.ts:
@@ -646,8 +668,12 @@ After request
 PolledWatches::
 /home/username/project/node_modules/@types:
   {"pollingInterval":500}
+/home/username/project/package.json:
+  {"pollingInterval":2000}
 /home/username/project/src/node_modules/@types:
   {"pollingInterval":500}
+/home/username/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-after-installation.js b/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-after-installation.js
index 7f6f0ec0d37d1..455e0632f2a97 100644
--- a/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-after-installation.js
+++ b/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-after-installation.js
@@ -63,6 +63,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -159,10 +162,16 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -325,10 +334,16 @@ Before request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
@@ -826,6 +841,9 @@ Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/tsconfig.jso
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@angular/core/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@angular/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -876,10 +894,22 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/@angular/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@angular/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-inbetween-installation.js b/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-inbetween-installation.js
index 28c1a468b3f90..51bc32e7684ea 100644
--- a/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-inbetween-installation.js
+++ b/tests/baselines/reference/tsserver/projectErrors/npm-install-when-timeout-occurs-inbetween-installation.js
@@ -63,6 +63,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -159,10 +162,16 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -328,10 +337,16 @@ Before running Timeout callback:: count: 3
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
@@ -868,6 +883,9 @@ Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/tsconfig.jso
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@angular/core/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@angular/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -918,10 +936,22 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/@angular/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@angular/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/projectErrors/reports-errors-correctly-when-file-referenced-by-inferred-project-root,-is-opened-right-after-closing-the-root-file.js b/tests/baselines/reference/tsserver/projectErrors/reports-errors-correctly-when-file-referenced-by-inferred-project-root,-is-opened-right-after-closing-the-root-file.js
index eeee518602886..1786696b05d09 100644
--- a/tests/baselines/reference/tsserver/projectErrors/reports-errors-correctly-when-file-referenced-by-inferred-project-root,-is-opened-right-after-closing-the-root-file.js
+++ b/tests/baselines/reference/tsserver/projectErrors/reports-errors-correctly-when-file-referenced-by-inferred-project-root,-is-opened-right-after-closing-the-root-file.js
@@ -290,6 +290,12 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferred
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/server/utilities.js 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/test/backend/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/test/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -439,26 +445,38 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/client/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/client/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/server/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/test/backend/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/test/backend/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/test/backend/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/test/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/test/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/test/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -671,18 +689,30 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/client/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/client/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/server/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/test/backend/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/test/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/test/backend/jsconfig.json:
@@ -751,6 +781,12 @@ Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/server/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/test/backend/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/test/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -863,6 +899,10 @@ TI:: [hh:mm:ss:mss] No new typings were requested as a result of typings discove
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/server/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/server/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/server/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 4 projectProgramVersion: 3 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1003,14 +1043,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/src/client/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/client/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/src/server/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/server/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/src/server/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json:
@@ -1019,6 +1065,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/server/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/test/backend/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/test/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectErrors/should-not-report-incorrect-error-when-json-is-root-file-found-by-tsconfig.js b/tests/baselines/reference/tsserver/projectErrors/should-not-report-incorrect-error-when-json-is-root-file-found-by-tsconfig.js
index 021a71b870fa5..f1a8d6214dfae 100644
--- a/tests/baselines/reference/tsserver/projectErrors/should-not-report-incorrect-error-when-json-is-root-file-found-by-tsconfig.js
+++ b/tests/baselines/reference/tsserver/projectErrors/should-not-report-incorrect-error-when-json-is-root-file-found-by-tsconfig.js
@@ -78,6 +78,9 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -182,8 +185,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectErrors/should-report-error-when-json-is-not-root-file-found-by-tsconfig.js b/tests/baselines/reference/tsserver/projectErrors/should-report-error-when-json-is-not-root-file-found-by-tsconfig.js
index e792618134407..0ef8f3d1d2136 100644
--- a/tests/baselines/reference/tsserver/projectErrors/should-report-error-when-json-is-not-root-file-found-by-tsconfig.js
+++ b/tests/baselines/reference/tsserver/projectErrors/should-report-error-when-json-is-not-root-file-found-by-tsconfig.js
@@ -76,6 +76,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/blabla.json 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -179,8 +182,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/compile-on-save-emits-same-output-as-project-build-with-external-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/compile-on-save-emits-same-output-as-project-build-with-external-project.js
index f2888cb8f059b..72c2d49f358aa 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/compile-on-save-emits-same-output-as-project-build-with-external-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/compile-on-save-emits-same-output-as-project-build-with-external-project.js
@@ -89,7 +89,7 @@ declare namespace Hmi {
 
 
 //// [/user/username/projects/myproject/buttonClass/Source.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./Source.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-1678937917-module Hmi {\n    export class Button {\n        public static myStaticFunction() {\n        }\n    }\n}"],"root":[2],"options":{"composite":true,"module":0,"outFile":"./Source.js"},"outSignature":"6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n","latestChangedDtsFile":"./Source.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./Source.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-1678937917-module Hmi {\n    export class Button {\n        public static myStaticFunction() {\n        }\n    }\n}","impliedFormat":1}],"root":[2],"options":{"composite":true,"module":0,"outFile":"./Source.js"},"outSignature":"6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n","latestChangedDtsFile":"./Source.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/buttonClass/Source.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,8 +99,22 @@ declare namespace Hmi {
       "./Source.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./Source.ts": "-1678937917-module Hmi {\n    export class Button {\n        public static myStaticFunction() {\n        }\n    }\n}"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./Source.ts": {
+        "original": {
+          "version": "-1678937917-module Hmi {\n    export class Button {\n        public static myStaticFunction() {\n        }\n    }\n}",
+          "impliedFormat": 1
+        },
+        "version": "-1678937917-module Hmi {\n    export class Button {\n        public static myStaticFunction() {\n        }\n    }\n}",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -117,7 +131,7 @@ declare namespace Hmi {
     "latestChangedDtsFile": "./Source.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 833
+  "size": 893
 }
 
 //// [/user/username/projects/myproject/SiblingClass/Source.js]
@@ -143,7 +157,7 @@ declare namespace Hmi {
 
 
 //// [/user/username/projects/myproject/SiblingClass/Source.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../buttonClass/Source.d.ts","./Source.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n","-3370344921-module Hmi {\n    export class Sibling {\n        public mySiblingFunction() {\n        }\n    }\n}"],"root":[3],"options":{"composite":true,"module":0,"outFile":"./Source.js"},"outSignature":"-2810380820-declare namespace Hmi {\n    class Sibling {\n        mySiblingFunction(): void;\n    }\n}\n","latestChangedDtsFile":"./Source.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../buttonClass/Source.d.ts","./Source.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n","impliedFormat":1},{"version":"-3370344921-module Hmi {\n    export class Sibling {\n        public mySiblingFunction() {\n        }\n    }\n}","impliedFormat":1}],"root":[3],"options":{"composite":true,"module":0,"outFile":"./Source.js"},"outSignature":"-2810380820-declare namespace Hmi {\n    class Sibling {\n        mySiblingFunction(): void;\n    }\n}\n","latestChangedDtsFile":"./Source.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/SiblingClass/Source.tsbuildinfo.readable.baseline.txt]
 {
@@ -154,9 +168,30 @@ declare namespace Hmi {
       "./Source.ts"
     ],
     "fileInfos": {
-      "../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "../buttonClass/Source.d.ts": "6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n",
-      "./Source.ts": "-3370344921-module Hmi {\n    export class Sibling {\n        public mySiblingFunction() {\n        }\n    }\n}"
+      "../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "../buttonClass/Source.d.ts": {
+        "original": {
+          "version": "6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "6176297704-declare namespace Hmi {\n    class Button {\n        static myStaticFunction(): void;\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "./Source.ts": {
+        "original": {
+          "version": "-3370344921-module Hmi {\n    export class Sibling {\n        public mySiblingFunction() {\n        }\n    }\n}",
+          "impliedFormat": 1
+        },
+        "version": "-3370344921-module Hmi {\n    export class Sibling {\n        public mySiblingFunction() {\n        }\n    }\n}",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -173,7 +208,7 @@ declare namespace Hmi {
     "latestChangedDtsFile": "./Source.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 964
+  "size": 1054
 }
 
 
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-dependency.js
index dd99b40df59fe..098d895de68f6 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -650,12 +673,20 @@ export declare function fn3(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-usage.js
index 02a29a36f850c..cfed37f6d3233 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -635,12 +658,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-dependency.js
index 58a80e509f557..2aace793a9920 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -646,12 +669,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-usage.js
index 5c18594cb8c6d..b876471e7bce0 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -635,12 +658,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-dependency.js
index d3afa40ea582b..0f6eaafdaee96 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -636,12 +659,20 @@ export declare function fn3(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-usage.js
index 5dd931534be82..31314a611f55b 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -614,12 +637,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-dependency.js
index 6cd3466cba3e5..2ff42f7a6dedd 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -634,12 +657,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-usage.js
index 3ca7d33fa4d41..a2dcd6696067e 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -614,12 +637,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project.js
index 924e353e01b7e..286784d8356fa 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-project.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -506,12 +529,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-dependency.js
index 73595c59c1bd5..2568244d35e23 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-usage.js
index 148355370b40c..f633458671358 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-dependency.js
index 2911116512585..fbe0550175c09 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-usage.js
index 6e8116c465a3b..4e4ce7adf60c2 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project.js
index fde4b0ac687a3..c14ee42bb9e47 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency-with-usage-project.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency.js
index def6db9c5a54d..fa001f92918da 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -539,12 +562,20 @@ export declare function fn2(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-dependency.js
index 8e7c200d09c2f..b277cfbac984a 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-usage.js
index b06e08e10abd1..06bd9063323fa 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency-with-file.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency-with-file.js
index 8d3ce7bb1357a..992fe66209144 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency-with-file.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency-with-file.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency.js
index 8d695ca2f8ab4..9dbfe4eb080f8 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage-with-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage-with-project.js
index d9e6c199221f8..3bd51210432e3 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage-with-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage-with-project.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage.js
index 1782e1e7eacb2..9be2c96af48d1 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-dependency.js
index 21e4aef2fd86f..90a989b7596d7 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-usage.js
index 33cd1af0ee7b0..47473b03e2d6d 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project.js
index f99f525e21151..e21c4ee7b8abf 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage-with-project.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage.js
index 4b545931009c4..2c4262cb42fc3 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/save-on-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,6 +284,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -381,12 +396,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-dependency.js
index b461363a2b946..77753eed79924 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-usage.js
index 9bf93872671f2..428cb83361052 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-dependency.js
index 50971cd00e066..b94d177b2bc60 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-usage.js
index 1803cbdc90073..9030fe878e0fc 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-dependency.js
index 82a689263eca8..ee44cebbdf6b4 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-usage.js
index cc75bea636517..d68b6afa3c221 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-dependency.js
index 766763e4ee578..d95c36dbb8397 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-usage.js
index 612983a706942..8932e5e4e4a1e 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project.js
index 7ea4e283f4747..089b53aadd1b4 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency-with-project.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency.js
index cce7906392229..5725e73ac901b 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-depenedency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-depenedency.js
index efa134f12f281..4993b8fc9888c 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-depenedency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-depenedency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-usage.js
index 4ec058c7b43f9..1417778a9e746 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-dependency.js
index 3e1eda97cb4a0..60889654eb7df 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-usage.js
index fa8e3058ff1ff..f825a21d1e4de 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-depenedency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-depenedency.js
index a5d65736ffd42..84caf86462969 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-depenedency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-depenedency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-usage.js
index 42bdacf26ef7d..c9108842bef39 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-dependency.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-dependency.js
index c42a593b68e49..f63fe5ca1f687 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-dependency.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-dependency.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-usage.js
index 8d98cf7337597..579b17ef9af27 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project-and-local-change-to-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project.js
index 5696afdaabdca..a9cf2462e43e0 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage-with-project.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage.js b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage.js
index 41c7292716ed0..05679f41e589e 100644
--- a/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage.js
+++ b/tests/baselines/reference/tsserver/projectReferenceCompileOnSave/when-dependency-project-is-not-open-and-save-on-usage.js
@@ -105,6 +105,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -204,12 +208,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-gerErr-with-sync-commands.js b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-gerErr-with-sync-commands.js
index 2e139416f53a1..aacb4371f37c0 100644
--- a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-gerErr-with-sync-commands.js
+++ b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-gerErr-with-sync-commands.js
@@ -112,6 +112,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -215,12 +219,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-getErr.js b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-getErr.js
index c28af695498d2..feb7dde361506 100644
--- a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-getErr.js
+++ b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-getErr.js
@@ -112,6 +112,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -215,12 +219,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-geterrForProject.js b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-geterrForProject.js
index 045d1f54a1c64..c1950237591ed 100644
--- a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-geterrForProject.js
+++ b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-dependency-project-is-not-open-geterrForProject.js
@@ -112,6 +112,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -215,12 +219,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-gerErr-with-sync-commands.js b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-gerErr-with-sync-commands.js
index 50a657ffe5a41..0c58ccd93fec2 100644
--- a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-gerErr-with-sync-commands.js
+++ b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-gerErr-with-sync-commands.js
@@ -112,6 +112,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -215,12 +219,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -283,6 +295,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -392,12 +407,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-getErr.js b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-getErr.js
index 75c3bc00d06ae..9239316b9c88a 100644
--- a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-getErr.js
+++ b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-getErr.js
@@ -112,6 +112,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -215,12 +219,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -283,6 +295,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -392,12 +407,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-geterrForProject.js b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-geterrForProject.js
index 0aef48b1eb4ad..375a955aa3f3c 100644
--- a/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-geterrForProject.js
+++ b/tests/baselines/reference/tsserver/projectReferenceErrors/with-module-scenario-when-the-depedency-file-is-open-geterrForProject.js
@@ -112,6 +112,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/fns.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/package.json 2000 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/usage/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/usage/tsconfig.json WatchType: Type roots
@@ -215,12 +219,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -283,6 +295,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -392,12 +407,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/usage/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/usage/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/ancestor-and-project-ref-management.js b/tests/baselines/reference/tsserver/projectReferences/ancestor-and-project-ref-management.js
index 18077655cdbde..9e89f1fad7ca9 100644
--- a/tests/baselines/reference/tsserver/projectReferences/ancestor-and-project-ref-management.js
+++ b/tests/baselines/reference/tsserver/projectReferences/ancestor-and-project-ref-management.js
@@ -115,7 +115,7 @@ declare namespace container {
 //# sourceMappingURL=lib.d.ts.map
 
 //// [/user/username/projects/container/built/local/lib.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../lib/index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-14968179652-namespace container {\n    export const myConst = 30;\n}\n"],"root":[2],"options":{"composite":true,"declarationMap":true,"outFile":"./lib.js"},"outSignature":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","latestChangedDtsFile":"./lib.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../lib/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-14968179652-namespace container {\n    export const myConst = 30;\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationMap":true,"outFile":"./lib.js"},"outSignature":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","latestChangedDtsFile":"./lib.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/container/built/local/lib.tsbuildinfo.readable.baseline.txt]
 {
@@ -125,8 +125,22 @@ declare namespace container {
       "../../lib/index.ts"
     ],
     "fileInfos": {
-      "../../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "../../lib/index.ts": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n"
+      "../../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "../../lib/index.ts": {
+        "original": {
+          "version": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -143,7 +157,7 @@ declare namespace container {
     "latestChangedDtsFile": "./lib.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 765
+  "size": 825
 }
 
 //// [/user/username/projects/container/built/local/exec.js]
@@ -176,7 +190,7 @@ declare namespace container {
 //# sourceMappingURL=compositeExec.d.ts.map
 
 //// [/user/username/projects/container/built/local/compositeExec.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./lib.d.ts","../../compositeexec/index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","4250822250-declare namespace container {\n    const myConst = 30;\n}\n","-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n"],"root":[3],"options":{"composite":true,"declarationMap":true,"outFile":"./compositeExec.js"},"outSignature":"6546330589-declare namespace container {\n    function getMyConst(): number;\n}\n","latestChangedDtsFile":"./compositeExec.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./lib.d.ts","../../compositeexec/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","impliedFormat":1},{"version":"-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true,"outFile":"./compositeExec.js"},"outSignature":"6546330589-declare namespace container {\n    function getMyConst(): number;\n}\n","latestChangedDtsFile":"./compositeExec.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/container/built/local/compositeExec.tsbuildinfo.readable.baseline.txt]
 {
@@ -187,9 +201,30 @@ declare namespace container {
       "../../compositeexec/index.ts"
     ],
     "fileInfos": {
-      "../../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./lib.d.ts": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
-      "../../compositeexec/index.ts": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n"
+      "../../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./lib.d.ts": {
+        "original": {
+          "version": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../compositeexec/index.ts": {
+        "original": {
+          "version": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -206,7 +241,7 @@ declare namespace container {
     "latestChangedDtsFile": "./compositeExec.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 927
+  "size": 1017
 }
 
 
diff --git a/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built-with-disableSourceOfProjectReferenceRedirect.js b/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built-with-disableSourceOfProjectReferenceRedirect.js
index 07ec4ba5700a7..8284d06fff68e 100644
--- a/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built-with-disableSourceOfProjectReferenceRedirect.js
+++ b/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built-with-disableSourceOfProjectReferenceRedirect.js
@@ -79,7 +79,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/shared/bld/library/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../src/library/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"3524703962-export function foo() {}","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../src/library/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3524703962-export function foo() {}","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/shared/bld/library/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -92,19 +92,23 @@ export declare function foo(): void;
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/library/index.ts": {
         "original": {
           "version": "3524703962-export function foo() {}",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "3524703962-export function foo() {}",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -125,11 +129,11 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 794
+  "size": 830
 }
 
 //// [/user/username/projects/myproject/app/bld/program/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../../shared/bld/library/index.d.ts","../../src/program/bar.ts","../../src/program/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-9677035610-import {foo} from \"shared\";",{"version":"193491849-foo","affectsGlobalScope":true}],"root":[3,4],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,[4,[{"file":"../../src/program/index.ts","start":0,"length":3,"messageText":"Cannot find name 'foo'.","category":1,"code":2304}]],2],"affectedFilesPendingEmit":[3,4],"emitSignatures":[3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../../shared/bld/library/index.d.ts","../../src/program/bar.ts","../../src/program/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-9677035610-import {foo} from \"shared\";","impliedFormat":1},{"version":"193491849-foo","affectsGlobalScope":true,"impliedFormat":1}],"root":[3,4],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,[4,[{"file":"../../src/program/index.ts","start":0,"length":3,"messageText":"Cannot find name 'foo'.","category":1,"code":2304}]],2],"affectedFilesPendingEmit":[3,4],"emitSignatures":[3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/app/bld/program/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -149,28 +153,42 @@ export declare function foo(): void;
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../shared/bld/library/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/program/bar.ts": {
+        "original": {
+          "version": "-9677035610-import {foo} from \"shared\";",
+          "impliedFormat": 1
+        },
         "version": "-9677035610-import {foo} from \"shared\";",
-        "signature": "-9677035610-import {foo} from \"shared\";"
+        "signature": "-9677035610-import {foo} from \"shared\";",
+        "impliedFormat": "commonjs"
       },
       "../../src/program/index.ts": {
         "original": {
           "version": "193491849-foo",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "193491849-foo",
         "signature": "193491849-foo",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -226,7 +244,7 @@ export declare function foo(): void;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1075
+  "size": 1171
 }
 
 
@@ -299,6 +317,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/bld/library/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/bld/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
@@ -421,18 +446,32 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/app/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/app/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/app/src/program/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/app/src/program/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/src/program/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/bld/library/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/bld/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built.js b/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built.js
index 07092c3e7e8db..3c0d551afb254 100644
--- a/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project-when-built.js
@@ -78,7 +78,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/shared/bld/library/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../src/library/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"3524703962-export function foo() {}","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../src/library/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"3524703962-export function foo() {}","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"outDir":"./"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"./index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/shared/bld/library/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -91,19 +91,23 @@ export declare function foo(): void;
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../src/library/index.ts": {
         "original": {
           "version": "3524703962-export function foo() {}",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "3524703962-export function foo() {}",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -124,11 +128,11 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 794
+  "size": 830
 }
 
 //// [/user/username/projects/myproject/app/bld/program/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../../shared/bld/library/index.d.ts","../../src/program/bar.ts","../../src/program/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-9677035610-import {foo} from \"shared\";",{"version":"193491849-foo","affectsGlobalScope":true}],"root":[3,4],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,[4,[{"file":"../../src/program/index.ts","start":0,"length":3,"messageText":"Cannot find name 'foo'.","category":1,"code":2304}]],2],"affectedFilesPendingEmit":[3,4],"emitSignatures":[3,4]},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../../a/lib/lib.d.ts","../../../shared/bld/library/index.d.ts","../../src/program/bar.ts","../../src/program/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-9677035610-import {foo} from \"shared\";","impliedFormat":1},{"version":"193491849-foo","affectsGlobalScope":true,"impliedFormat":1}],"root":[3,4],"options":{"composite":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,[4,[{"file":"../../src/program/index.ts","start":0,"length":3,"messageText":"Cannot find name 'foo'.","category":1,"code":2304}]],2],"affectedFilesPendingEmit":[3,4],"emitSignatures":[3,4]},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/app/bld/program/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -148,28 +152,42 @@ export declare function foo(): void;
       "../../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../../shared/bld/library/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../src/program/bar.ts": {
+        "original": {
+          "version": "-9677035610-import {foo} from \"shared\";",
+          "impliedFormat": 1
+        },
         "version": "-9677035610-import {foo} from \"shared\";",
-        "signature": "-9677035610-import {foo} from \"shared\";"
+        "signature": "-9677035610-import {foo} from \"shared\";",
+        "impliedFormat": "commonjs"
       },
       "../../src/program/index.ts": {
         "original": {
           "version": "193491849-foo",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "193491849-foo",
         "signature": "193491849-foo",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -225,7 +243,7 @@ export declare function foo(): void;
     ]
   },
   "version": "FakeTSVersion",
-  "size": 1075
+  "size": 1171
 }
 
 
@@ -297,6 +315,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/src/library/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/src/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
@@ -418,18 +443,32 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/app/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/app/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/app/src/program/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/app/src/program/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/src/program/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/src/library/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project.js b/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project.js
index 64e713fe87e1c..971a3afa062d8 100644
--- a/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project.js
+++ b/tests/baselines/reference/tsserver/projectReferences/auto-import-with-referenced-project.js
@@ -135,6 +135,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/src/library/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/shared/src/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/program/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/app/src/node_modules/@types 1 undefined Project: /user/username/projects/myproject/app/src/program/tsconfig.json WatchType: Type roots
@@ -256,18 +263,32 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/app/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/app/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/app/src/program/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/app/src/program/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/app/src/program/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/src/library/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/can-successfully-find-references-with-out-option.js b/tests/baselines/reference/tsserver/projectReferences/can-successfully-find-references-with-out-option.js
index 5011c85fc8a50..e1fff9ca2e999 100644
--- a/tests/baselines/reference/tsserver/projectReferences/can-successfully-find-references-with-out-option.js
+++ b/tests/baselines/reference/tsserver/projectReferences/can-successfully-find-references-with-out-option.js
@@ -112,7 +112,7 @@ declare namespace container {
 //# sourceMappingURL=lib.d.ts.map
 
 //// [/user/username/projects/container/built/local/lib.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../lib/index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-14968179652-namespace container {\n    export const myConst = 30;\n}\n"],"root":[2],"options":{"composite":true,"declarationMap":true,"outFile":"./lib.js"},"outSignature":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","latestChangedDtsFile":"./lib.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../lib/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-14968179652-namespace container {\n    export const myConst = 30;\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationMap":true,"outFile":"./lib.js"},"outSignature":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","latestChangedDtsFile":"./lib.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/container/built/local/lib.tsbuildinfo.readable.baseline.txt]
 {
@@ -122,8 +122,22 @@ declare namespace container {
       "../../lib/index.ts"
     ],
     "fileInfos": {
-      "../../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "../../lib/index.ts": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n"
+      "../../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "../../lib/index.ts": {
+        "original": {
+          "version": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -140,7 +154,7 @@ declare namespace container {
     "latestChangedDtsFile": "./lib.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 765
+  "size": 825
 }
 
 //// [/user/username/projects/container/built/local/exec.js]
@@ -173,7 +187,7 @@ declare namespace container {
 //# sourceMappingURL=compositeExec.d.ts.map
 
 //// [/user/username/projects/container/built/local/compositeExec.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./lib.d.ts","../../compositeexec/index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","4250822250-declare namespace container {\n    const myConst = 30;\n}\n","-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n"],"root":[3],"options":{"composite":true,"declarationMap":true,"outFile":"./compositeExec.js"},"outSignature":"6546330589-declare namespace container {\n    function getMyConst(): number;\n}\n","latestChangedDtsFile":"./compositeExec.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./lib.d.ts","../../compositeexec/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","impliedFormat":1},{"version":"-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true,"outFile":"./compositeExec.js"},"outSignature":"6546330589-declare namespace container {\n    function getMyConst(): number;\n}\n","latestChangedDtsFile":"./compositeExec.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/container/built/local/compositeExec.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,9 +198,30 @@ declare namespace container {
       "../../compositeexec/index.ts"
     ],
     "fileInfos": {
-      "../../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./lib.d.ts": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
-      "../../compositeexec/index.ts": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n"
+      "../../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./lib.d.ts": {
+        "original": {
+          "version": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../compositeexec/index.ts": {
+        "original": {
+          "version": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -203,7 +238,7 @@ declare namespace container {
     "latestChangedDtsFile": "./compositeExec.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 927
+  "size": 1017
 }
 
 
diff --git a/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js b/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js
index c30b183307a08..382fcf346051e 100644
--- a/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js
+++ b/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js
@@ -305,6 +305,10 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -411,8 +415,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -574,8 +586,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -664,8 +684,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -775,6 +803,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -797,8 +829,16 @@ After request
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -986,6 +1026,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1053,8 +1097,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1231,6 +1283,10 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1247,6 +1303,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1362,6 +1422,48 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-indirect1.json:
+  {}
+/user/username/projects/myproject/tsconfig-indirect2.json:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
diff --git a/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js b/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js
index 28dc244928f21..56bbadf2f141e 100644
--- a/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js
+++ b/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js
@@ -259,6 +259,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -366,10 +371,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -537,10 +552,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -631,10 +656,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -749,6 +784,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -770,10 +810,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -944,6 +994,11 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -1011,10 +1066,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1176,6 +1241,11 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -1192,6 +1262,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -1309,6 +1384,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/indirect1/main.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-indirect1.json:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
diff --git a/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js b/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js
index 3acc90b06b4df..e5c37d17c9db7 100644
--- a/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js
+++ b/tests/baselines/reference/tsserver/projectReferences/disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js
@@ -230,6 +230,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -273,18 +276,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -386,18 +395,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules:
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -479,14 +494,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules:
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -564,14 +585,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules:
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -644,6 +671,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -669,14 +699,20 @@ PolledWatches *deleted*::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules:
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -809,6 +845,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
@@ -858,18 +897,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1002,6 +1047,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
@@ -1047,6 +1095,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
@@ -1115,28 +1166,40 @@ PolledWatches::
   {"pollingInterval":500} *new*
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/src/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules:
   {"pollingInterval":500} *new*
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/src/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules:
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/does-not-error-on-container-only-project.js b/tests/baselines/reference/tsserver/projectReferences/does-not-error-on-container-only-project.js
index d9ab6ffcde09e..bb437b40791af 100644
--- a/tests/baselines/reference/tsserver/projectReferences/does-not-error-on-container-only-project.js
+++ b/tests/baselines/reference/tsserver/projectReferences/does-not-error-on-container-only-project.js
@@ -112,7 +112,7 @@ declare namespace container {
 //# sourceMappingURL=lib.d.ts.map
 
 //// [/user/username/projects/container/built/local/lib.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../lib/index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","-14968179652-namespace container {\n    export const myConst = 30;\n}\n"],"root":[2],"options":{"composite":true,"declarationMap":true,"outFile":"./lib.js"},"outSignature":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","latestChangedDtsFile":"./lib.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../lib/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"-14968179652-namespace container {\n    export const myConst = 30;\n}\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationMap":true,"outFile":"./lib.js"},"outSignature":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","latestChangedDtsFile":"./lib.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/container/built/local/lib.tsbuildinfo.readable.baseline.txt]
 {
@@ -122,8 +122,22 @@ declare namespace container {
       "../../lib/index.ts"
     ],
     "fileInfos": {
-      "../../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "../../lib/index.ts": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n"
+      "../../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "../../lib/index.ts": {
+        "original": {
+          "version": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-14968179652-namespace container {\n    export const myConst = 30;\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -140,7 +154,7 @@ declare namespace container {
     "latestChangedDtsFile": "./lib.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 765
+  "size": 825
 }
 
 //// [/user/username/projects/container/built/local/exec.js]
@@ -173,7 +187,7 @@ declare namespace container {
 //# sourceMappingURL=compositeExec.d.ts.map
 
 //// [/user/username/projects/container/built/local/compositeExec.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./lib.d.ts","../../compositeexec/index.ts"],"fileInfos":["-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","4250822250-declare namespace container {\n    const myConst = 30;\n}\n","-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n"],"root":[3],"options":{"composite":true,"declarationMap":true,"outFile":"./compositeExec.js"},"outSignature":"6546330589-declare namespace container {\n    function getMyConst(): number;\n}\n","latestChangedDtsFile":"./compositeExec.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./lib.d.ts","../../compositeexec/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","impliedFormat":1},{"version":"4250822250-declare namespace container {\n    const myConst = 30;\n}\n","impliedFormat":1},{"version":"-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true,"outFile":"./compositeExec.js"},"outSignature":"6546330589-declare namespace container {\n    function getMyConst(): number;\n}\n","latestChangedDtsFile":"./compositeExec.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/container/built/local/compositeExec.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,9 +198,30 @@ declare namespace container {
       "../../compositeexec/index.ts"
     ],
     "fileInfos": {
-      "../../../../../../a/lib/lib.d.ts": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-      "./lib.d.ts": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
-      "../../compositeexec/index.ts": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n"
+      "../../../../../../a/lib/lib.d.ts": {
+        "original": {
+          "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+          "impliedFormat": 1
+        },
+        "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
+        "impliedFormat": "commonjs"
+      },
+      "./lib.d.ts": {
+        "original": {
+          "version": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "4250822250-declare namespace container {\n    const myConst = 30;\n}\n",
+        "impliedFormat": "commonjs"
+      },
+      "../../compositeexec/index.ts": {
+        "original": {
+          "version": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n",
+          "impliedFormat": 1
+        },
+        "version": "-4062145979-namespace container {\n    export function getMyConst() {\n        return myConst;\n    }\n}\n",
+        "impliedFormat": "commonjs"
+      }
     },
     "root": [
       [
@@ -203,7 +238,7 @@ declare namespace container {
     "latestChangedDtsFile": "./compositeExec.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 927
+  "size": 1017
 }
 
 
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
index e5b64cf5ecb39..fc191a7c81d94 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +263,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -320,6 +335,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -478,12 +496,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
@@ -630,14 +658,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/lib/index.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
index 2c77987b72c4b..f155c4bb4cc63 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
@@ -119,6 +119,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +275,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -332,6 +347,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -490,12 +508,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
@@ -694,12 +722,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
index 1622bd92c5083..d66a1dfe3c90b 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +262,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -319,6 +331,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -477,12 +492,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
index fe159a50cfcab..19a54d94704b0 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
@@ -119,6 +119,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +274,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -331,6 +343,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -489,12 +504,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
index 539158032612e..07c162c516b53 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +263,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -320,6 +335,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -478,12 +496,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
@@ -630,14 +658,24 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/lib/index.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
index e14a9351b7c6f..a54fc1acc75a5 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
@@ -119,6 +119,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +275,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -332,6 +347,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -490,12 +508,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
@@ -694,12 +722,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
index f4ca99d24d078..496c1f51a91c6 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +262,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -319,6 +331,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -477,12 +492,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
index 88e1f1eccb628..24db9ca3ab9bd 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
@@ -119,6 +119,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +274,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -331,6 +343,9 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -489,12 +504,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
index 685fca8e0a329..f1ddb587a24fd 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +263,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -393,12 +408,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/lib/index.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
index dad9aa2054397..fb321e9e03ecd 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
@@ -119,6 +119,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +275,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -410,10 +425,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
index c45424db9fa57..6f255e9611cd9 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +262,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
index 8e8f874ffac9f..a858dfa3645fe 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-disabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
@@ -119,6 +119,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +274,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
index 3a73dfc42999b..0dc3b93cd025e 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +263,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -393,12 +408,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/lib/index.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
index 9b779bae28e7f..31f9777a2ef49 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-disabled-and-a-decl-map-is-present.js
@@ -119,6 +119,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/lib/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +275,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -337,6 +352,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -605,12 +623,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/lib/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
index 6cbb74ddb1920..2a60686ea190c 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-missing.js
@@ -107,6 +107,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -258,10 +262,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -323,6 +335,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -591,12 +606,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
index c49829904f2e0..0c9cecff31dc0 100644
--- a/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
+++ b/tests/baselines/reference/tsserver/projectReferences/find-refs-to-decl-in-other-proj-when-proj-is-not-loaded-and-refd-proj-loading-is-enabled-and-proj-ref-redirects-are-enabled-and-a-decl-map-is-present.js
@@ -119,6 +119,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/index.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/node_modules/@types 1 undefined Project: /user/username/projects/myproject/a/tsconfig.json WatchType: Type roots
@@ -270,10 +274,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json: *new*
@@ -335,6 +347,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/b/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b 0 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/node_modules/@types 1 undefined Project: /user/username/projects/myproject/b/tsconfig.json WatchType: Type roots
@@ -603,12 +618,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /user/username/projects/myproject/a/tsconfig.json:
diff --git a/tests/baselines/reference/tsserver/projectReferences/finding-references-in-overlapping-projects.js b/tests/baselines/reference/tsserver/projectReferences/finding-references-in-overlapping-projects.js
index f58e52d523ad5..db71813f5a17c 100644
--- a/tests/baselines/reference/tsserver/projectReferences/finding-references-in-overlapping-projects.js
+++ b/tests/baselines/reference/tsserver/projectReferences/finding-references-in-overlapping-projects.js
@@ -177,6 +177,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/a 1 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/a 1 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/a/package.json 2000 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/b/package.json 2000 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/b/node_modules/@types 1 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/b/node_modules/@types 1 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/b/tsconfig.json WatchType: Type roots
@@ -289,10 +293,18 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -364,6 +376,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/a/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/a/package.json 2000 undefined Project: /user/username/projects/solution/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/a/node_modules/@types 1 undefined Project: /user/username/projects/solution/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/a/node_modules/@types 1 undefined Project: /user/username/projects/solution/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/a/tsconfig.json WatchType: Type roots
@@ -596,6 +611,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/a 1 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/b 1 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/b 1 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/a/package.json 2000 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/b/package.json 2000 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/c/package.json 2000 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/c/node_modules/@types 1 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/c/node_modules/@types 1 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/c/tsconfig.json WatchType: Type roots
@@ -695,6 +715,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/c 1 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/b 1 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/b 1 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/a/package.json 2000 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/b/package.json 2000 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/c/package.json 2000 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/d/package.json 2000 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/d/node_modules/@types 1 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/d/node_modules/@types 1 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/d/tsconfig.json WatchType: Type roots
@@ -932,16 +958,28 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/d/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/d/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built-with-preserveSymlinks.js
index 3a2627f0e85e1..d6402532b3d6e 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built-with-preserveSymlinks.js
@@ -88,7 +88,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -102,27 +102,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -149,7 +155,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -166,7 +172,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/index.d.ts","../../node_modules/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/index.d.ts","../../node_modules/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -187,27 +193,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -236,7 +256,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1041
+  "size": 1137
 }
 
 
@@ -314,6 +334,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -425,16 +451,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built.js
index 191a3346cb482..649dc1ca759a0 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-built.js
@@ -86,7 +86,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -100,27 +100,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -147,7 +153,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -164,7 +170,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -185,27 +191,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "3563314629-import { foo } from 'b';\nimport { bar } from 'b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -234,7 +254,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1009
+  "size": 1105
 }
 
 
@@ -310,6 +330,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -420,16 +446,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built-with-preserveSymlinks.js
index 5ff45a6654828..a0e0f6bbb96af 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built-with-preserveSymlinks.js
@@ -140,6 +140,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -251,16 +257,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built.js
index 941fef4897875..6ce80b273c5d0 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-and-solution-is-not-built.js
@@ -136,6 +136,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -246,16 +252,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js
index 0e377a060f641..cc510909ebeb7 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js
@@ -88,7 +88,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -102,27 +102,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -149,7 +155,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -166,7 +172,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/index.d.ts","../../node_modules/@issue/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/index.d.ts","../../node_modules/@issue/b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -187,27 +193,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -236,7 +256,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1069
+  "size": 1165
 }
 
 
@@ -314,6 +334,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -425,16 +451,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built.js
index 6ef1bccc1a3a1..863294644f844 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-built.js
@@ -86,7 +86,7 @@ export declare function foo(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/bar.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -100,27 +100,33 @@ export declare function foo(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/bar.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -147,7 +153,7 @@ export declare function foo(): void;
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 940
+  "size": 994
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/index.js]
@@ -164,7 +170,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/index.d.ts","../b/lib/bar.d.ts","./src/index.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/index.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -185,27 +191,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/index.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/index.ts": {
         "original": {
           "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "8545527381-import { foo } from '@issue/b';\nimport { bar } from '@issue/b/lib/bar';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -234,7 +254,7 @@ export {};
     "latestChangedDtsFile": "./lib/index.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1023
+  "size": 1119
 }
 
 
@@ -310,6 +330,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -420,16 +446,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js
index 902d3fe271f71..6069e49e755fa 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js
@@ -140,6 +140,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -251,16 +257,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built.js
index 2d2172259136b..75bd06b2a0593 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-packageJson-has-types-field-and-has-index.ts-with-scoped-package-and-solution-is-not-built.js
@@ -136,6 +136,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -246,16 +252,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built-with-preserveSymlinks.js
index ff02db8dceab2..a9a9b92cf546b 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built-with-preserveSymlinks.js
@@ -85,7 +85,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,27 +99,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -146,7 +152,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -163,7 +169,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/foo.d.ts","../../node_modules/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/b/lib/foo.d.ts","../../node_modules/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,27 +190,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -233,7 +253,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1054
+  "size": 1150
 }
 
 
@@ -309,6 +329,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -420,16 +447,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built.js
index ba9c51c5fb845..112d590ff4fee 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-built.js
@@ -83,7 +83,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -97,27 +97,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -144,7 +150,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -161,7 +167,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,27 +188,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "14700910833-import { foo } from 'b/lib/foo';\nimport { bar } from 'b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -231,7 +251,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1022
+  "size": 1118
 }
 
 
@@ -305,6 +325,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -415,16 +442,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built-with-preserveSymlinks.js
index 6a7f8eb9a7937..a56df08c9540f 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built-with-preserveSymlinks.js
@@ -135,6 +135,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -246,16 +253,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built.js
index 54889cfa31274..93da5ed1b265e 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-and-solution-is-not-built.js
@@ -131,6 +131,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -241,16 +248,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js
index 4760d42b06821..052c590877d2f 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built-with-preserveSymlinks.js
@@ -85,7 +85,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,27 +99,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -146,7 +152,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -163,7 +169,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/foo.d.ts","../../node_modules/@issue/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../../node_modules/@issue/b/lib/foo.d.ts","../../node_modules/@issue/b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,3,2,4],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -184,27 +190,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../../node_modules/@issue/b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -233,7 +253,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1083
+  "size": 1179
 }
 
 
@@ -309,6 +329,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -420,16 +447,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built.js
index 612b4e1d1e040..0fe84504124a8 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-built.js
@@ -83,7 +83,7 @@ export declare function bar(): void;
 
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n"},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n"}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","./src/foo.ts","./src/bar/foo.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"4646078106-export function foo() { }","signature":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"1045484683-export function bar() { }","signature":"-2904461644-export declare function bar(): void;\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"referencedMap":[],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./lib/bar/foo.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/B/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -97,27 +97,33 @@ export declare function bar(): void;
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./src/foo.ts": {
         "original": {
           "version": "4646078106-export function foo() { }",
-          "signature": "-5677608893-export declare function foo(): void;\n"
+          "signature": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
         },
         "version": "4646078106-export function foo() { }",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/bar/foo.ts": {
         "original": {
           "version": "1045484683-export function bar() { }",
-          "signature": "-2904461644-export declare function bar(): void;\n"
+          "signature": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
         },
         "version": "1045484683-export function bar() { }",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -144,7 +150,7 @@ export declare function bar(): void;
     "latestChangedDtsFile": "./lib/bar/foo.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 944
+  "size": 998
 }
 
 //// [/user/username/projects/myproject/packages/A/lib/test.js]
@@ -161,7 +167,7 @@ export {};
 
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-5677608893-export declare function foo(): void;\n","-2904461644-export declare function bar(): void;\n",{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n"}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../../a/lib/lib.d.ts","../b/lib/foo.d.ts","../b/lib/bar/foo.d.ts","./src/test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-5677608893-export declare function foo(): void;\n","impliedFormat":1},{"version":"-2904461644-export declare function bar(): void;\n","impliedFormat":1},{"version":"-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[4],"options":{"composite":true,"outDir":"./lib","rootDir":"./src"},"fileIdsList":[[2,3]],"referencedMap":[[4,1]],"semanticDiagnosticsPerFile":[1,4,3,2],"latestChangedDtsFile":"./lib/test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/packages/A/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,27 +188,41 @@ export {};
       "../../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../b/lib/foo.d.ts": {
+        "original": {
+          "version": "-5677608893-export declare function foo(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-5677608893-export declare function foo(): void;\n",
-        "signature": "-5677608893-export declare function foo(): void;\n"
+        "signature": "-5677608893-export declare function foo(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../b/lib/bar/foo.d.ts": {
+        "original": {
+          "version": "-2904461644-export declare function bar(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-2904461644-export declare function bar(): void;\n",
-        "signature": "-2904461644-export declare function bar(): void;\n"
+        "signature": "-2904461644-export declare function bar(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./src/test.ts": {
         "original": {
           "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-20350237855-import { foo } from '@issue/b/lib/foo';\nimport { bar } from '@issue/b/lib/bar/foo';\nfoo();\nbar();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -231,7 +251,7 @@ export {};
     "latestChangedDtsFile": "./lib/test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1037
+  "size": 1133
 }
 
 
@@ -305,6 +325,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -415,16 +442,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js
index 87961450df833..728d932faf022 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built-with-preserveSymlinks.js
@@ -135,6 +135,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -246,16 +253,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built.js b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built.js
index 2f29284c6b995..6ac453cbcda87 100644
--- a/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferences/monorepo-like-with-symlinks-when-referencing-file-from-subFolder-with-scoped-package-and-solution-is-not-built.js
@@ -131,6 +131,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@issue/b 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/B/src/bar/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/A/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/A/tsconfig.json WatchType: Type roots
@@ -241,16 +248,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/A/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/A/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/A/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/B/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/project-is-directly-referenced-by-solution.js b/tests/baselines/reference/tsserver/projectReferences/project-is-directly-referenced-by-solution.js
index a2ec0b86c8cd5..ec7909cf1581c 100644
--- a/tests/baselines/reference/tsserver/projectReferences/project-is-directly-referenced-by-solution.js
+++ b/tests/baselines/reference/tsserver/projectReferences/project-is-directly-referenced-by-solution.js
@@ -216,6 +216,10 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -322,8 +326,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -564,8 +576,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -650,8 +670,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -755,6 +783,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -777,8 +809,16 @@ After request
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -921,6 +961,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -988,8 +1032,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1072,8 +1124,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1168,8 +1228,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1259,8 +1327,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1390,6 +1466,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -1458,18 +1537,26 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1663,6 +1750,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -1707,10 +1797,18 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -1877,8 +1975,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/src/node_modules/@types:
@@ -2113,8 +2219,16 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2248,6 +2362,10 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2264,6 +2382,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2381,6 +2503,44 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
@@ -2493,8 +2653,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2597,8 +2765,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2698,8 +2874,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2809,6 +2993,12 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/main.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
@@ -2929,6 +3119,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2964,10 +3158,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/indirect3/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3153,6 +3365,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -3310,10 +3526,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/indirect3/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/project-is-indirectly-referenced-by-solution.js b/tests/baselines/reference/tsserver/projectReferences/project-is-indirectly-referenced-by-solution.js
index 4a6688b969940..5d62d535758ce 100644
--- a/tests/baselines/reference/tsserver/projectReferences/project-is-indirectly-referenced-by-solution.js
+++ b/tests/baselines/reference/tsserver/projectReferences/project-is-indirectly-referenced-by-solution.js
@@ -303,6 +303,10 @@ Info seq  [hh:mm:ss:mss] event:
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -409,8 +413,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -655,8 +667,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,8 +765,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -856,6 +884,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -878,8 +910,16 @@ After request
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1066,6 +1106,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1133,8 +1177,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1221,8 +1273,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1321,8 +1381,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1416,8 +1484,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1553,6 +1629,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -1621,18 +1700,26 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1830,6 +1917,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -1874,10 +1964,18 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -2048,8 +2146,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/src/node_modules/@types:
@@ -2288,8 +2394,16 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2465,6 +2579,10 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2481,6 +2599,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2598,6 +2720,48 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-indirect1.json:
+  {}
+/user/username/projects/myproject/tsconfig-indirect2.json:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
@@ -2639,6 +2803,11 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -2729,6 +2898,11 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect2.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
@@ -2970,10 +3144,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3120,10 +3306,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3267,10 +3465,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3418,6 +3628,12 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/main.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
@@ -3535,6 +3751,10 @@ Info seq  [hh:mm:ss:mss] 	Files (3)
 	  Matched by include pattern './src/**/*' in 'tsconfig-src.json'
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -3559,6 +3779,11 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect1.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -3586,6 +3811,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
@@ -3623,10 +3853,32 @@ After request
 PolledWatches::
 /user/username/projects/myproject/indirect3/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3892,6 +4144,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -3944,6 +4200,11 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -3989,6 +4250,11 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect2.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
@@ -4231,12 +4497,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/indirect3/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/referencing-const-enum-from-referenced-project-with-preserveConstEnums.js b/tests/baselines/reference/tsserver/projectReferences/referencing-const-enum-from-referenced-project-with-preserveConstEnums.js
index e2a476274a9e0..959cce3e9cff0 100644
--- a/tests/baselines/reference/tsserver/projectReferences/referencing-const-enum-from-referenced-project-with-preserveConstEnums.js
+++ b/tests/baselines/reference/tsserver/projectReferences/referencing-const-enum-from-referenced-project-with-preserveConstEnums.js
@@ -106,6 +106,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/utils 1 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/utils/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/utils/package.json 2000 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/package.json 2000 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/project/package.json 2000 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/project/node_modules/@types 1 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/project/node_modules/@types 1 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/project/tsconfig.json WatchType: Type roots
@@ -209,12 +214,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/src/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/src/project/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/src/utils/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferences/reusing-d.ts-files-from-composite-and-non-composite-projects.js b/tests/baselines/reference/tsserver/projectReferences/reusing-d.ts-files-from-composite-and-non-composite-projects.js
index 6f5346b37152a..b3ec65669cb88 100644
--- a/tests/baselines/reference/tsserver/projectReferences/reusing-d.ts-files-from-composite-and-non-composite-projects.js
+++ b/tests/baselines/reference/tsserver/projectReferences/reusing-d.ts-files-from-composite-and-non-composite-projects.js
@@ -130,6 +130,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dist 1 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dist 1 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dist/compositeb/package.json 2000 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dist/package.json 2000 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositea/package.json 2000 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositea/node_modules/@types 1 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositea/node_modules/@types 1 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/compositea/tsconfig.json WatchType: Type roots
@@ -240,10 +245,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/compositea/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/compositea/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dist/compositeb/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dist/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -358,6 +373,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositeb 1 undefined Config: /user/username/projects/myproject/compositeb/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositeb 1 undefined Config: /user/username/projects/myproject/compositeb/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositeb/b.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositeb/package.json 2000 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositec/package.json 2000 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositec/node_modules/@types 1 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/compositec/node_modules/@types 1 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/compositec/tsconfig.json WatchType: Type roots
@@ -471,12 +490,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/compositea/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/compositea/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/compositeb/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/compositec/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/compositec/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dist/compositeb/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dist/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project-and-using-declaration-maps.js b/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project-and-using-declaration-maps.js
index e7e3804e2d06f..6d74accb21606 100644
--- a/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project-and-using-declaration-maps.js
+++ b/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project-and-using-declaration-maps.js
@@ -103,7 +103,7 @@ export {};
 //# sourceMappingURL=keyboard.test.d.ts.map
 
 //// [/user/username/projects/project/out/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../src/common/input/keyboard.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }","signature":"-14411843863-export declare function evaluateKeyboardEvent(): void;\n"},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"composite":true,"declarationMap":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../src/common/input/keyboard.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }","signature":"-14411843863-export declare function evaluateKeyboardEvent(): void;\n","impliedFormat":1},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declarationMap":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/project/out/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -122,27 +122,33 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/common/input/keyboard.ts": {
         "original": {
           "version": "-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }",
-          "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n"
+          "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }",
-        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n"
+        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/common/input/keyboard.test.ts": {
         "original": {
           "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -173,7 +179,7 @@ export {};
     "latestChangedDtsFile": "./input/keyboard.test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1233
+  "size": 1287
 }
 
 //// [/user/username/projects/project/out/terminal.js]
@@ -209,7 +215,7 @@ export {};
 //# sourceMappingURL=keyboard.test.d.ts.map
 
 //// [/user/username/projects/project/out/src.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./input/keyboard.d.ts","../src/terminal.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-14411843863-export declare function evaluateKeyboardEvent(): void;\n",{"version":"-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n"},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outDir":"./","tsBuildInfoFile":"./src.tsconfig.tsbuildinfo"},"fileIdsList":[[2]],"referencedMap":[[4,1],[3,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./common/input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./input/keyboard.d.ts","../src/terminal.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14411843863-export declare function evaluateKeyboardEvent(): void;\n","impliedFormat":1},{"version":"-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outDir":"./","tsBuildInfoFile":"./src.tsconfig.tsbuildinfo"},"fileIdsList":[[2]],"referencedMap":[[4,1],[3,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./common/input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/project/out/src.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -229,31 +235,42 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./input/keyboard.d.ts": {
+        "original": {
+          "version": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
-        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n"
+        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/terminal.ts": {
         "original": {
           "version": "-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/common/input/keyboard.test.ts": {
         "original": {
           "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -292,7 +309,7 @@ export {};
     "latestChangedDtsFile": "./common/input/keyboard.test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1327
+  "size": 1411
 }
 
 
@@ -338,6 +355,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/input/keyboard.test.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/project/src/common/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/input/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/node_modules/@types 1 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/node_modules/@types 1 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: Type roots
@@ -456,12 +478,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/src/common/input/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/src/common/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/src/common/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -557,6 +589,13 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src 1 undefined Config: /user/username/projects/project/src/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/project/src/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/out/input/keyboard.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/out/input/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/out/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/input/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/node_modules/@types 1 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: Type roots
@@ -678,12 +717,26 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/out/input/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/out/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project/src/common/input/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/src/common/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/src/common/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -864,12 +917,26 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/out/input/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project/out/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project/src/common/input/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/src/common/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/src/common/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project.js b/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project.js
index 1ad7d3cf5df3f..6660bab01308c 100644
--- a/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project.js
+++ b/tests/baselines/reference/tsserver/projectReferences/root-file-is-file-from-referenced-project.js
@@ -103,7 +103,7 @@ export {};
 //# sourceMappingURL=keyboard.test.d.ts.map
 
 //// [/user/username/projects/project/out/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../src/common/input/keyboard.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }","signature":"-14411843863-export declare function evaluateKeyboardEvent(): void;\n"},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n"}],"root":[2,3],"options":{"composite":true,"declarationMap":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../src/common/input/keyboard.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }","signature":"-14411843863-export declare function evaluateKeyboardEvent(): void;\n","impliedFormat":1},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[2,3],"options":{"composite":true,"declarationMap":true,"outDir":"./"},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,3,2],"latestChangedDtsFile":"./input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/project/out/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -122,27 +122,33 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../src/common/input/keyboard.ts": {
         "original": {
           "version": "-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }",
-          "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n"
+          "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-15187822601-function bar() { return \"just a random function so .d.ts location doesnt match\"; }\nexport function evaluateKeyboardEvent() { }",
-        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n"
+        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/common/input/keyboard.test.ts": {
         "original": {
           "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -173,7 +179,7 @@ export {};
     "latestChangedDtsFile": "./input/keyboard.test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1233
+  "size": 1287
 }
 
 //// [/user/username/projects/project/out/terminal.js]
@@ -209,7 +215,7 @@ export {};
 //# sourceMappingURL=keyboard.test.d.ts.map
 
 //// [/user/username/projects/project/out/src.tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./input/keyboard.d.ts","../src/terminal.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-14411843863-export declare function evaluateKeyboardEvent(): void;\n",{"version":"-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n"},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n"}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outDir":"./","tsBuildInfoFile":"./src.tsconfig.tsbuildinfo"},"fileIdsList":[[2]],"referencedMap":[[4,1],[3,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./common/input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./input/keyboard.d.ts","../src/terminal.ts","../src/common/input/keyboard.test.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-14411843863-export declare function evaluateKeyboardEvent(): void;\n","impliedFormat":1},{"version":"-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n","impliedFormat":1},{"version":"-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[[2,4]],"options":{"composite":true,"declarationMap":true,"outDir":"./","tsBuildInfoFile":"./src.tsconfig.tsbuildinfo"},"fileIdsList":[[2]],"referencedMap":[[4,1],[3,1]],"semanticDiagnosticsPerFile":[1,2,4,3],"latestChangedDtsFile":"./common/input/keyboard.test.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/project/out/src.tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -229,31 +235,42 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./input/keyboard.d.ts": {
+        "original": {
+          "version": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
-        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n"
+        "signature": "-14411843863-export declare function evaluateKeyboardEvent(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "../src/terminal.ts": {
         "original": {
           "version": "-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-9992649704-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction foo() {\n    return evaluateKeyboardEvent();\n}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       },
       "../src/common/input/keyboard.test.ts": {
         "original": {
           "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-7258701250-import { evaluateKeyboardEvent } from 'common/input/keyboard';\nfunction testEvaluateKeyboardEvent() {\n    return evaluateKeyboardEvent();\n}\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -292,7 +309,7 @@ export {};
     "latestChangedDtsFile": "./common/input/keyboard.test.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1327
+  "size": 1411
 }
 
 
@@ -338,6 +355,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/input/keyboard.test.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/project/src/common/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/input/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/node_modules/@types 1 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/node_modules/@types 1 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/common/tsconfig.json WatchType: Type roots
@@ -456,12 +478,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/project/src/common/input/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/src/common/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/src/common/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/project/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -556,6 +588,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/project/src/tsconfig.js
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src 1 undefined Config: /user/username/projects/project/src/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src 1 undefined Config: /user/username/projects/project/src/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/project/src/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/input/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/common/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/src/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/project/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/src/node_modules/@types 1 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/project/node_modules/@types 1 undefined Project: /user/username/projects/project/src/tsconfig.json WatchType: Type roots
@@ -676,12 +713,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/project/src/common/input/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/src/common/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/src/common/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/project/src/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js
index 4fc69c7964297..eac9aafdd38fa 100644
--- a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js
+++ b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-first-indirect-project-but-not-in-another-one.js
@@ -250,6 +250,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -341,6 +347,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -445,10 +455,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -634,10 +656,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -739,10 +773,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -858,6 +904,12 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect1.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -882,6 +934,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -904,10 +960,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1086,6 +1154,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-indi
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1133,6 +1207,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1198,10 +1276,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1291,6 +1381,12 @@ Info seq  [hh:mm:ss:mss] Search path: /dummy
 Info seq  [hh:mm:ss:mss] For info: /dummy/dummy.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/main.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1374,6 +1470,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-indi
   }
  ]
 }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1420,6 +1522,10 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1436,6 +1542,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1551,6 +1661,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/indirect1/main.ts:
+  {}
+/user/username/projects/myproject/own/main.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-indirect1.json:
+  {}
+/user/username/projects/myproject/tsconfig-indirect2.json:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
diff --git a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js
index 8431512847f22..6cad2753a8552 100644
--- a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js
+++ b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set-in-indirect-project.js
@@ -203,6 +203,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -294,6 +300,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -401,10 +412,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -590,10 +613,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -694,10 +729,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -810,6 +857,12 @@ Info seq  [hh:mm:ss:mss] 	Files (5)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -837,6 +890,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -859,10 +917,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1018,6 +1088,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1065,6 +1141,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -1132,10 +1213,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1225,6 +1318,12 @@ Info seq  [hh:mm:ss:mss] Search path: /dummy
 Info seq  [hh:mm:ss:mss] For info: /dummy/dummy.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/main.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1287,6 +1386,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-src.
   "configFilePath": "/user/username/projects/myproject/tsconfig-src.json"
  }
 }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1333,6 +1438,11 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -1349,6 +1459,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -1466,6 +1581,48 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/indirect1/main.ts:
+  {}
+/user/username/projects/myproject/own/main.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-indirect1.json:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
diff --git a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js
index d76fae1c51241..4e358e57dece3 100644
--- a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js
+++ b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-disables-looking-into-the-child-project-if-disableReferencedProjectLoad-is-set.js
@@ -163,6 +163,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -267,8 +272,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -420,8 +435,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -504,8 +529,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -602,6 +637,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -625,8 +665,18 @@ After request
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -746,6 +796,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -811,8 +866,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -881,6 +946,11 @@ Info seq  [hh:mm:ss:mss] Search path: /dummy
 Info seq  [hh:mm:ss:mss] For info: /dummy/dummy.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/main.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -926,6 +996,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-src.
   "configFilePath": "/user/username/projects/myproject/tsconfig-src.json"
  }
 }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1034,14 +1109,34 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-found-is-not-solution-but-references-open-file-through-project-reference.js b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-found-is-not-solution-but-references-open-file-through-project-reference.js
index 9df402180e801..fce6613e3d3e4 100644
--- a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-found-is-not-solution-but-references-open-file-through-project-reference.js
+++ b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-found-is-not-solution-but-references-open-file-through-project-reference.js
@@ -161,6 +161,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -249,6 +254,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -355,8 +364,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -613,8 +632,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -708,8 +737,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -810,6 +849,11 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -834,6 +878,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -857,8 +905,18 @@ After request
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -985,6 +1043,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1029,6 +1092,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1096,8 +1163,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1189,8 +1266,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1294,8 +1381,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1394,8 +1491,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1570,8 +1677,18 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1787,8 +1904,18 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1902,8 +2029,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2157,6 +2294,11 @@ Info seq  [hh:mm:ss:mss] Scheduled: /user/username/projects/myproject/tsconfig-s
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/main.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -2201,6 +2343,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-src.
   "configFilePath": "/user/username/projects/myproject/tsconfig-src.json"
  }
 }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -2244,6 +2391,10 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2260,6 +2411,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2377,6 +2532,42 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/own/main.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
@@ -2530,8 +2721,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2646,8 +2847,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2759,8 +2970,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2882,6 +3103,12 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/main.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
@@ -2990,6 +3217,11 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -3014,6 +3246,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -3050,10 +3286,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/indirect3/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3226,6 +3482,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-src.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -3270,6 +3531,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -3474,10 +3739,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/indirect3/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-is-indirectly-referenced-by-solution.js b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-is-indirectly-referenced-by-solution.js
index 233a786436e49..caaf2c2c0d3a9 100644
--- a/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-is-indirectly-referenced-by-solution.js
+++ b/tests/baselines/reference/tsserver/projectReferences/solution-with-its-own-files-and-project-is-indirectly-referenced-by-solution.js
@@ -248,6 +248,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -339,6 +345,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -443,10 +453,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -715,10 +737,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -820,10 +854,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -939,6 +985,12 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect1.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -963,6 +1015,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -985,10 +1041,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1166,6 +1234,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-indi
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/functions.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -1213,6 +1287,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -1278,10 +1356,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1381,10 +1471,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1496,10 +1598,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1606,10 +1720,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1737,6 +1863,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -1812,14 +1939,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1957,6 +2096,7 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-src.
 }
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
@@ -2070,10 +2210,22 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
@@ -2229,10 +2381,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2499,6 +2663,12 @@ Info seq  [hh:mm:ss:mss] Scheduled: /user/username/projects/myproject/tsconfig.j
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject/src
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/src/main.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -2581,6 +2751,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-indi
   }
  ]
 }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -2627,6 +2803,10 @@ Info seq  [hh:mm:ss:mss] event:
         "diagnostics": []
       }
     }
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2643,6 +2823,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -2760,6 +2944,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/indirect1/main.ts:
+  {}
+/user/username/projects/myproject/own/main.ts:
+  {}
+/user/username/projects/myproject/src/helpers/functions.ts:
+  {}
+/user/username/projects/myproject/tsconfig-indirect1.json:
+  {}
+/user/username/projects/myproject/tsconfig-indirect2.json:
+  {}
+/user/username/projects/myproject/tsconfig-src.json:
+  {}
+/user/username/projects/myproject/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/src:
+  {}
+
 Timeout callback:: count: 0
 
 Projects::
@@ -2807,6 +3037,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -2906,6 +3141,11 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect2.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
@@ -3142,10 +3382,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3307,10 +3561,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3469,10 +3737,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3635,6 +3917,12 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/main.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/target/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/package.json 2000 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect3/tsconfig.json WatchType: Type roots
@@ -3746,6 +4034,12 @@ Info seq  [hh:mm:ss:mss] 	Files (5)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -3767,6 +4061,10 @@ Info seq  [hh:mm:ss:mss] 	Files (3)
 	  Matched by include pattern './src/**/*' in 'tsconfig-src.json'
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -3791,6 +4089,11 @@ Info seq  [hh:mm:ss:mss] 	Files (4)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect1.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -3818,6 +4121,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src 1 undefined Config: /user/username/projects/myproject/tsconfig-src.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-src.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/indirect2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
@@ -3856,10 +4164,34 @@ After request
 PolledWatches::
 /user/username/projects/myproject/indirect3/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/indirect1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/own/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4116,6 +4448,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig-indi
 }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig-indirect2.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/main.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/own/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -4163,6 +4501,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-src.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-src.json WatchType: Type roots
@@ -4226,6 +4568,11 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect1.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect1.json WatchType: Type roots
@@ -4287,6 +4634,11 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/main.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig-indirect2.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/helpers/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig-indirect2.json WatchType: Type roots
@@ -4518,12 +4870,34 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/indirect1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect2/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/indirect3/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect3/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/own/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/helpers/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/helpers/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/target/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property-types.js b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property-types.js
index 0befd39177b0d..d1e269fc80375 100644
--- a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property-types.js
+++ b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property-types.js
@@ -146,6 +146,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
@@ -259,10 +265,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -336,6 +354,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/shared/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
@@ -545,6 +567,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/app/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
@@ -689,14 +717,30 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/shared/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/shared/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property.js b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property.js
index 7d48b694040d3..7c70d9b640c51 100644
--- a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property.js
+++ b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-as-object-literal-property.js
@@ -147,6 +147,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
@@ -260,10 +266,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -337,6 +355,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/shared/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
@@ -463,12 +485,24 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/shared/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/shared/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-assignment.js b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-assignment.js
index fc6ce63c751b7..8d62e4804b88f 100644
--- a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-assignment.js
+++ b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-arrow-function-assignment.js
@@ -146,6 +146,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
@@ -259,10 +265,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -336,6 +354,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/shared/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
@@ -545,6 +567,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/app/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
@@ -689,14 +717,30 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/shared/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/shared/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-method-of-class-expression.js b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-method-of-class-expression.js
index 22cb29deb98db..dd59365417a3a 100644
--- a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-method-of-class-expression.js
+++ b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-method-of-class-expression.js
@@ -148,6 +148,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
@@ -261,10 +267,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -338,6 +356,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/shared/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
@@ -547,6 +569,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/app/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
@@ -691,14 +719,30 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/shared/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/shared/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-object-literal-property.js b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-object-literal-property.js
index 05edac3cde1b9..ccf48ebb994bc 100644
--- a/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-object-literal-property.js
+++ b/tests/baselines/reference/tsserver/projectReferences/special-handling-of-localness-when-using-object-literal-property.js
@@ -146,6 +146,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/src/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/package.json 2000 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/api/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/api/tsconfig.json WatchType: Type roots
@@ -259,10 +265,22 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -336,6 +354,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/shared/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/shared/tsconfig.json WatchType: Type roots
@@ -545,6 +567,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/solution/app/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/shared/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/src/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/package.json 2000 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/app/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/solution/node_modules/@types 1 undefined Project: /user/username/projects/solution/app/tsconfig.json WatchType: Type roots
@@ -689,14 +717,30 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/api/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/api/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/api/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/app/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/solution/app/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/solution/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/solution/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/solution/shared/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/solution/shared/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/solution/shared/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/when-files-from-two-projects-are-open-and-one-project-references.js b/tests/baselines/reference/tsserver/projectReferences/when-files-from-two-projects-are-open-and-one-project-references.js
index 5a0e4cf7c870a..7292e420348b3 100644
--- a/tests/baselines/reference/tsserver/projectReferences/when-files-from-two-projects-are-open-and-one-project-references.js
+++ b/tests/baselines/reference/tsserver/projectReferences/when-files-from-two-projects-are-open-and-one-project-references.js
@@ -448,6 +448,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/noCoreRef2 1 undefined Config: /user/username/projects/myproject/noCoreRef2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/noCoreRef2 1 undefined Config: /user/username/projects/myproject/noCoreRef2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/src/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -548,10 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -647,6 +659,10 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/core/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/core/src/package.json 2000 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/core/package.json 2000 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/core/node_modules/@types 1 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/core/node_modules/@types 1 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/core/tsconfig.json WatchType: Type roots
@@ -753,12 +769,24 @@ After request
 PolledWatches::
 /user/username/projects/myproject/core/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/core/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -864,6 +892,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/indirect/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect/package.json 2000 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirect/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirect/tsconfig.json WatchType: Type roots
@@ -948,6 +980,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef1/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/coreRef1/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef1/src/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef1/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef1/node_modules/@types 1 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef1/node_modules/@types 1 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/coreRef1/tsconfig.json WatchType: Type roots
@@ -1032,6 +1068,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad1/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad1/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad1/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad1/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad1/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad1/tsconfig.json WatchType: Type roots
@@ -1117,6 +1157,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad2/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad2/src/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad2/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad2/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/indirectDisabledChildLoad2/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/indirectDisabledChildLoad2/tsconfig.json WatchType: Type roots
@@ -1202,6 +1246,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refToCoreRef3/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refToCoreRef3/src/package.json 2000 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refToCoreRef3/package.json 2000 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refToCoreRef3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refToCoreRef3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/refToCoreRef3/tsconfig.json WatchType: Type roots
@@ -1286,6 +1334,10 @@ Info seq  [hh:mm:ss:mss] event:
     }
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef3/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/coreRef3/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef3/src/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef3/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/coreRef3/node_modules/@types 1 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/coreRef3/tsconfig.json WatchType: Type roots
@@ -1396,26 +1448,62 @@ After request
 PolledWatches::
 /user/username/projects/myproject/core/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/core/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/core/src/file1.d.ts: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/core/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/coreRef1/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/coreRef1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/coreRef1/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/coreRef3/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/coreRef3/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/coreRef3/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/indirect/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirect/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirect/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/indirectDisabledChildLoad1/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirectDisabledChildLoad1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirectDisabledChildLoad1/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/indirectDisabledChildLoad2/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/indirectDisabledChildLoad2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/indirectDisabledChildLoad2/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/refToCoreRef3/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/refToCoreRef3/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refToCoreRef3/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferences/when-the-referenced-projects-have-allowJs-and-emitDeclarationOnly.js b/tests/baselines/reference/tsserver/projectReferences/when-the-referenced-projects-have-allowJs-and-emitDeclarationOnly.js
index 2b15dfbb2740a..7375a8ec9c487 100644
--- a/tests/baselines/reference/tsserver/projectReferences/when-the-referenced-projects-have-allowJs-and-emitDeclarationOnly.js
+++ b/tests/baselines/reference/tsserver/projectReferences/when-the-referenced-projects-have-allowJs-and-emitDeclarationOnly.js
@@ -142,6 +142,12 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/emit-composite/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/emit-composite/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/consumer/src/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/consumer/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/consumer/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/consumer/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/packages/node_modules/@types 1 undefined Project: /user/username/projects/myproject/packages/consumer/tsconfig.json WatchType: Type roots
@@ -246,16 +252,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/consumer/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/consumer/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/consumer/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/consumer/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/packages/emit-composite/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/packages/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/packages/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
index 0e7521be4fc6d..5ace8b64ebd46 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
index 3f30fc9f07eb2..bb04a38f942b8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
index 693832a453dea..63095cf36c274 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
index 7fd83b1c5fef3..cc998c2e0ab9d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
index 15c27bcb3e5bc..e71d0f6e4bcb4 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes.js
index 15990209ed15e..36006b416874d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-created.js
index 4fee4dc60f5e5..7d5ba788e661c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-created.js
@@ -80,7 +80,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,19 +93,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +131,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -149,7 +153,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,23 +172,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,7 +223,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -252,6 +265,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -354,10 +370,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -522,12 +544,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -635,12 +663,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -687,12 +721,18 @@ export declare function fn5(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts:
@@ -798,12 +838,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1147,12 +1193,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1246,12 +1298,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1343,12 +1401,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1436,12 +1500,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1532,6 +1602,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1566,6 +1639,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-deleted.js
index bb30d7cb5e011..c9e1cc74f5323 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-deleted.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1116,12 +1150,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1219,12 +1259,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1321,12 +1367,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1401,12 +1453,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1484,6 +1542,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1516,6 +1577,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-not-present.js
index 87e9715062962..238a41303acf6 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-not-present.js
@@ -80,7 +80,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,19 +93,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +131,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -149,7 +153,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,23 +172,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,7 +223,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -252,6 +265,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -354,10 +370,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -522,12 +544,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -635,12 +663,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -952,12 +986,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1038,12 +1078,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1122,12 +1168,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1202,12 +1254,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1283,6 +1341,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1317,6 +1378,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
index 9c7ce7f215f19..c6c5e52117995 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
index 264aa0e3ffc8b..c5d76f5689091 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index aab3cb7035d87..d65e6d135ab0e 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
index 47d479988cb66..173fdd6ea47ec 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
index b48bdfcbc86d7..c98825e60ca67 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
index e86aa3ea4a567..c72dcd44de31d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 0665d4de4b02d..ca5f9b7a58031 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
index 9d9c4f01f2ad0..3593348ef6fa8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
index 82085c160a54a..60fe94a6b3a30 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes.js
index fb735a3efb666..9070a37f3c20d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-created.js
index 26e43ac2d6701..70bb956552094 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-created.js
@@ -85,7 +85,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -257,6 +270,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -359,10 +375,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -527,12 +549,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -641,12 +669,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -707,12 +741,18 @@ Before request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -836,12 +876,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1185,12 +1231,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1284,12 +1336,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1381,12 +1439,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1474,12 +1538,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1570,6 +1640,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1603,6 +1676,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-deleted.js
index c24760c4a5135..b96b640a01511 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-deleted.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1115,12 +1149,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1218,12 +1258,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1321,12 +1367,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1408,12 +1460,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1498,6 +1556,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1531,6 +1592,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-not-present.js
index 385fc305c2e86..67efaa2d19330 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-not-present.js
@@ -85,7 +85,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -257,6 +270,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -359,10 +375,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -527,12 +549,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -641,12 +669,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -980,12 +1014,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1073,12 +1113,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1164,12 +1210,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1251,12 +1303,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1339,6 +1397,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1374,6 +1435,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index f1dbde1122549..ef9ac18d653c9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index 612b02845a86a..1117d9d32c2df 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index 1734c695de1f0..ee206cfb84a81 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index 6201887baf9da..856941cf4ee14 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/rename-locations.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/rename-locations.js
index 2694ac9aeb183..40c6bcdc0abe3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/rename-locations.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/rename-locations.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -990,12 +1024,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1089,12 +1129,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1186,12 +1232,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1279,12 +1331,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1375,6 +1433,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1408,6 +1469,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes-with-timeout-before-request.js
index b02835249fd6e..d80698e0f840b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes.js
index 888fea550a277..7210875bb22d9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configHasNoReference/usage-file-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -260,6 +273,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -362,10 +378,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -530,12 +552,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -642,12 +670,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-action-before-write.js
index 265022feacd38..565cdd3b5800e 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-no-timeout.js
index 470822761c92c..5becaf3e594c6 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
index f6a74f93a21ba..26ba03a704a59 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
index 20f1157e6c748..e56de3b4c4f0d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes-with-timeout-before-request.js
index 30ed8e1aefc73..5ea50918c62f7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes.js
index d141f46330b76..73b61ec91fec0 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-created.js
index 29a677534b0fd..8eeb0ec19d79c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-created.js
@@ -85,7 +85,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -257,6 +270,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -359,10 +375,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -527,12 +549,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -640,12 +668,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -692,12 +726,18 @@ export declare function fn5(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts:
@@ -803,12 +843,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1152,12 +1198,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1251,12 +1303,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1348,12 +1406,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1441,12 +1505,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1537,6 +1607,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1571,6 +1644,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-deleted.js
index 23c1e4fbedab7..0977dbb0a35a2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-deleted.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1121,12 +1155,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1224,12 +1264,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1326,12 +1372,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1406,12 +1458,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1489,6 +1547,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1521,6 +1582,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-not-present.js
index c349f0574b53c..b531d935ef272 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-not-present.js
@@ -85,7 +85,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -257,6 +270,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -359,10 +375,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -527,12 +549,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -640,12 +668,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -957,12 +991,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1043,12 +1083,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1127,12 +1173,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1207,12 +1259,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1288,6 +1346,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1322,6 +1383,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
index fb01fc75e4836..e8cf5361ff7ec 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
index 8dc684b5e486a..df186a418a4e2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index ccb8b4c1e3016..82e42306e8290 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
index 02b9e5ae90d88..6992032bd6940 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
index fb9c5016cce76..5369d57420a55 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
index 228481b7cff5f..73f3b56fab377 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 847768647de64..4b7d97f087d2c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
index c66c450e1bffe..0b47789ce4b26 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
index 380f1928b37cb..869ddf9ede5ad 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes.js
index cf71dff7ce766..e61da4a1dba77 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-created.js
index d88f7a5e72687..a63f6a18cc23e 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-created.js
@@ -90,7 +90,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,19 +103,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,7 +141,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -159,7 +163,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,23 +182,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -364,10 +380,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -532,12 +554,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -646,12 +674,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -712,12 +746,18 @@ Before request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -841,12 +881,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1190,12 +1236,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1289,12 +1341,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1386,12 +1444,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1479,12 +1543,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1575,6 +1645,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1608,6 +1681,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-deleted.js
index 44f15add65386..6ea44f8094e3b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-deleted.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1120,12 +1154,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1223,12 +1263,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1326,12 +1372,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1413,12 +1465,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1503,6 +1561,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1536,6 +1597,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-not-present.js
index afb0cd50642b5..ce878a562d4ad 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-not-present.js
@@ -90,7 +90,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,19 +103,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,7 +141,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -159,7 +163,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,23 +182,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -364,10 +380,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -532,12 +554,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -646,12 +674,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -985,12 +1019,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1078,12 +1118,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1169,12 +1215,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1256,12 +1308,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1344,6 +1402,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1379,6 +1440,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index 313ceb0175215..c3f17e87b9e39 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index 471d6ef45804b..a3a1cec5e7c79 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index 3f1d2ba16d63a..5c5357db3eff9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index 4b2293ea549c0..925671b82133d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes-with-timeout-before-request.js
index d01b2493b0189..7c1f11045d5a3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes.js
index 8e5f33b6b2fd7..e7a68f93d3187 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/dependency-source-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/rename-locations.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/rename-locations.js
index 52288c079b8e6..60e342e049904 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/rename-locations.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/rename-locations.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -995,12 +1029,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1094,12 +1134,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1191,12 +1237,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1284,12 +1336,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1380,6 +1438,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1413,6 +1474,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes-with-timeout-before-request.js
index 2d44101b97678..9229503331853 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes.js
index 71d32ae2bc573..b624974e2695d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/usage-file-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -265,6 +278,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -367,10 +383,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -535,12 +557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/when-projects-are-not-built.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/when-projects-are-not-built.js
index a42a88cfaa6b7..8aa8497990cd9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/when-projects-are-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/configWithReference/when-projects-are-not-built.js
@@ -105,6 +105,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -207,10 +210,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -375,12 +384,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -488,12 +503,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -805,12 +826,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -891,12 +918,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -975,12 +1008,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1055,12 +1094,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1136,6 +1181,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1170,6 +1218,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
index 1f2b911071070..f718d2bfa54ff 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
index 9dda245d98d73..67c31f952f136 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
index 5b1a1d8cbb153..38e3d0f3342be 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
index f44055aa5f736..bdecb028a875c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
index f97b9a226f13d..c9732907596d0 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes.js
index dde4a1881fa88..6896d3a344144 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-created.js
index 1775d48b0dfae..169bd25d37a03 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-created.js
@@ -86,7 +86,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,19 +99,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -133,7 +137,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -155,7 +159,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,23 +178,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +229,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -258,6 +271,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -360,10 +376,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -528,12 +550,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -641,12 +669,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -693,12 +727,18 @@ export declare function fn5(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts:
@@ -804,12 +844,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1153,12 +1199,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1252,12 +1304,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1349,12 +1407,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1442,12 +1506,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1538,6 +1608,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1572,6 +1645,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-deleted.js
index eb07eda28492e..7a942f59a2a74 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-deleted.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1122,12 +1156,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1225,12 +1265,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1327,12 +1373,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1407,12 +1459,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1490,6 +1548,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1522,6 +1583,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-not-present.js
index e2c3a8d1219b1..8b774e0846996 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-not-present.js
@@ -86,7 +86,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,19 +99,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -133,7 +137,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -155,7 +159,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,23 +178,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +229,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -258,6 +271,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -360,10 +376,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -528,12 +550,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -641,12 +669,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -958,12 +992,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1044,12 +1084,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1128,12 +1174,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1208,12 +1260,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1289,6 +1347,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1323,6 +1384,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
index fcf64cc200eb2..178a5b0377448 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
index 73e5dad72644d..334a7c8a3418f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index e3b249dee078f..ba917cef7e0eb 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
index 750761cc851b4..95aaace462a4b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
index fd87573b431d8..45565a8948bdd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
index 02d1f8962fdd7..369145c46edeb 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index c52a3894c5dac..3020a71ff8ff3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
index a26d35b6847f2..dc59c50b1a824 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
index 2109e2e5f2a19..58c01ed63f0d1 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes.js
index e4819f6a44d9f..7a61c2877db08 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-created.js
index b72de1ec5acf6..4dd97be8daef1 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-created.js
@@ -91,7 +91,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,7 +142,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -160,7 +164,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +234,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -263,6 +276,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -365,10 +381,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -533,12 +555,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -713,12 +747,18 @@ Before request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -842,12 +882,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1191,12 +1237,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1290,12 +1342,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1387,12 +1445,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1480,12 +1544,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1576,6 +1646,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1609,6 +1682,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-deleted.js
index 5957a9516d07a..8f5489ec72048 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-deleted.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1121,12 +1155,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1224,12 +1264,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1327,12 +1373,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1414,12 +1466,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1504,6 +1562,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1537,6 +1598,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-not-present.js
index fde36778706b6..9f7a7deb70095 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-not-present.js
@@ -91,7 +91,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,7 +142,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -160,7 +164,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +234,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -263,6 +276,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -365,10 +381,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -533,12 +555,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,12 +675,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -986,12 +1020,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1079,12 +1119,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1170,12 +1216,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1257,12 +1309,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1345,6 +1403,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1380,6 +1441,12 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index aa1e74b0c13f8..19297a724666a 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index f964eb6250e4a..6e0ddc13bcf30 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index 19ba1d2549b96..ffd1b2339f1cf 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index d4499f8e78281..a1b19b7d3ad81 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/rename-locations.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/rename-locations.js
index 113e0e2f07508..442ec8ca4d126 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/rename-locations.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/rename-locations.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -996,12 +1030,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1095,12 +1135,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1192,12 +1238,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1285,12 +1337,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1381,6 +1439,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -1414,6 +1475,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
index b25358b468862..035adb0b61805 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes.js
index 957432de2d0c6..dcccfabb9d8cd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependency/disabledSourceRef/usage-file-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -266,6 +279,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -368,10 +384,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -536,12 +558,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -648,12 +676,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
index 9ba8398371635..61f178df75de6 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1142,6 +1200,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1194,6 +1253,54 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1507,6 +1614,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1562,6 +1670,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 9: *ensureProjectForOpenFiles* *deleted*
 10: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
index eb79e617cca24..e66a8332110a4 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
index f7297cf549761..dca6af4adaea9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1136,6 +1194,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1210,6 +1269,54 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -1313,6 +1420,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1368,6 +1476,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 7: *ensureProjectForOpenFiles* *deleted*
 8: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
index d82dbd340a167..208cb0dc635d5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
index 310a11ab6da7e..12371dc702a8c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes.js
index 3f034f7455270..8f8ea4210c560 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-created.js
index 60e9b024bf868..6f446e834f4a5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-created.js
@@ -80,7 +80,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,19 +93,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +131,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -149,7 +153,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,23 +172,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,7 +223,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -253,6 +266,9 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -354,10 +370,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -425,6 +447,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -533,12 +558,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -723,14 +756,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -904,14 +945,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -970,14 +1019,22 @@ export declare function fn5(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts:
@@ -1038,6 +1095,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1095,16 +1153,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1928,16 +1996,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2052,16 +2130,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2174,16 +2262,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2292,16 +2390,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2411,16 +2519,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2536,6 +2654,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2558,6 +2680,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2591,10 +2716,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-deleted.js
index f3f9201338814..4bf1d9d7ea7bb 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-deleted.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1142,6 +1200,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1194,6 +1253,54 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1798,14 +1905,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1925,14 +2040,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2051,14 +2174,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2155,14 +2286,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2260,14 +2399,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2366,6 +2513,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2388,6 +2538,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2421,8 +2574,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-not-present.js
index 6c23340b1b2d4..6b3f6b1a7deec 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-not-present.js
@@ -80,7 +80,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,19 +93,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +131,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -149,7 +153,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,23 +172,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,7 +223,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -253,6 +266,9 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -354,10 +370,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -425,6 +447,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -533,12 +558,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -723,14 +756,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1112,14 +1153,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1446,14 +1495,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1554,14 +1611,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1660,14 +1725,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1762,14 +1835,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1865,14 +1946,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1967,6 +2056,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1989,6 +2081,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2024,8 +2119,16 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
index d3a859ead74ea..11f887a8003d8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1142,6 +1200,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1194,6 +1253,54 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1506,6 +1613,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1561,6 +1669,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 9: *ensureProjectForOpenFiles* *deleted*
 10: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
index 08dd32c08db42..95ddfea382bf7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index 60ef239029779..61c2dec6d366c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1136,6 +1194,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1210,6 +1269,54 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -1312,6 +1419,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1367,6 +1475,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 7: *ensureProjectForOpenFiles* *deleted*
 8: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
index 54e85ee5f2181..625ce93beac16 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
index 27886d15799d8..fd85a3b842729 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
index 604d7d6682825..d295555a20658 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 1a17ac6b1295a..6262be421d701 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
index 4d11f1c33b01f..b989fab62225f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
index 546b659d2a962..17be16412b243 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes.js
index b1c5e4e3a9252..2c92bed038818 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-created.js
index 025d7b6dc2752..8914c1e5917ab 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-created.js
@@ -85,7 +85,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -259,6 +272,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -361,12 +378,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -440,6 +465,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -546,14 +574,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -742,16 +780,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -866,16 +914,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1029,16 +1087,26 @@ Before request
 
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -1168,16 +1236,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1996,16 +2074,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2120,16 +2208,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2242,16 +2340,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2360,16 +2468,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2479,16 +2597,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2604,6 +2732,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2626,6 +2758,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2658,10 +2793,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-deleted.js
index edb9891529121..20b9f8851a521 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-deleted.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1778,16 +1836,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1906,16 +1974,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2034,16 +2112,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2146,16 +2234,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2259,16 +2357,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2378,6 +2486,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2400,6 +2512,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2432,10 +2547,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-not-present.js
index f60e333df4623..183d591717d26 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-not-present.js
@@ -85,7 +85,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -259,6 +272,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -361,12 +378,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -440,6 +465,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -546,14 +574,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -742,16 +780,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -866,16 +914,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1512,16 +1570,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1628,16 +1696,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1742,16 +1820,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1852,16 +1940,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1963,16 +2061,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2078,6 +2186,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2100,6 +2212,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2134,10 +2249,20 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index 26a200004f1b9..01a9cdfb85553 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index 2aacb454933ed..822f9d14ad3d4 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index 3b94dc9ea06fb..c05b1effdc629 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index edbbec1d4c392..ba9f802f61022 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations-and-deleting-config-file.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations-and-deleting-config-file.js
index e278a6ba0f4f3..4c2c2b67e90f5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations-and-deleting-config-file.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations-and-deleting-config-file.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -447,6 +472,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -604,14 +632,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -725,6 +763,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -778,20 +820,30 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -972,6 +1024,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -1010,14 +1066,24 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -1248,16 +1314,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1370,16 +1446,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1512,6 +1598,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -1569,22 +1659,32 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1711,22 +1811,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1852,22 +1962,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2072,6 +2192,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -2114,16 +2238,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -2267,16 +2401,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2395,16 +2539,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2671,16 +2825,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2794,16 +2958,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2948,16 +3122,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3073,16 +3257,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3353,16 +3547,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3476,16 +3680,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3829,16 +4043,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3952,16 +4176,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4104,16 +4338,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4229,16 +4473,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4508,16 +4762,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4631,16 +4895,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4833,16 +5107,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4958,16 +5242,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5236,16 +5530,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5359,16 +5663,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5631,16 +5945,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5754,16 +6078,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations.js
index 78444fef13f1b..560b8e913b7ad 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/goToDef-and-rename-locations.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1689,16 +1747,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1813,16 +1881,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1935,16 +2013,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2053,16 +2141,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2172,16 +2270,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2297,6 +2405,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2319,6 +2431,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2351,10 +2466,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes-with-timeout-before-request.js
index 251fddb490ec8..63c7b46a6e217 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes.js
index 507740758399f..3e6521977cf8c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configHasNoReference/usage-file-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +468,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -549,14 +577,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -745,16 +783,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -867,16 +915,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-action-before-write.js
index 63418c661b416..70a5ea15be66c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-no-timeout.js
index 1501346dd41ac..86733dcc84b9f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
index 9f76d1a1a7b63..e96777af1b642 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
index 0680a7c6ca32e..61f225f78d7b7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes-with-timeout-before-request.js
index 727782785468c..5cdc69a508f68 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes.js
index 6bfd58a4894be..0655cf4d3d7e2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-created.js
index 6184d84e46db6..db729ab442ed1 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-created.js
@@ -85,7 +85,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -279,6 +292,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -381,12 +398,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -451,6 +476,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -559,12 +587,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -755,14 +791,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -970,14 +1014,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1039,14 +1091,22 @@ export declare function fn5(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts:
@@ -1463,14 +1523,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1970,14 +2038,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2095,14 +2171,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2218,14 +2302,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2337,14 +2429,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2457,14 +2557,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2581,6 +2689,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2603,6 +2715,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2638,8 +2753,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-deleted.js
index 18a939e328d66..c92fc4e892d00 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-deleted.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1952,14 +2004,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2081,14 +2141,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2209,14 +2277,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2315,14 +2391,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2422,14 +2506,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2533,6 +2625,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2555,6 +2651,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2588,8 +2687,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-not-present.js
index b94cdae627fc3..f3bbc2fb1efd2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-not-present.js
@@ -85,7 +85,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -279,6 +292,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -381,12 +398,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -451,6 +476,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -559,12 +587,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -755,14 +791,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1178,14 +1222,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1647,14 +1699,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1759,14 +1819,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1869,14 +1937,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1975,14 +2051,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2082,14 +2166,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2191,6 +2283,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2213,6 +2309,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2248,8 +2347,16 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
index ab7e9db451588..7ec64c143d63a 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
index aba0b93a78c1d..a36275905b7bf 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index 4f1152c4bf6d6..640fbbb4ee1ec 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
index b8a490174e86e..6e82d79c5aa26 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
index 096971e65fa15..998d3ac3c7ac8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
index c1234af1a3d70..4a44c1af323d7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 219a76331a2d1..5065ec70bd2f5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
index e27cf8d1a9dfc..f5dbe79a85460 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
index 6977a5f0812b8..c18e21f7aa048 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes.js
index e5c792040d6f7..3bf814b16431e 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-created.js
index 3431eb0e50f9b..c540d083568b3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-created.js
@@ -90,7 +90,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,19 +103,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,7 +141,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -159,7 +163,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,23 +182,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -284,6 +297,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -386,12 +403,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -456,6 +481,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -564,12 +592,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -760,14 +796,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -976,14 +1020,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1065,14 +1117,22 @@ Before request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -1528,14 +1588,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2035,14 +2103,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2160,14 +2236,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2283,14 +2367,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2402,14 +2494,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2522,14 +2622,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2646,6 +2754,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2668,6 +2780,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2702,8 +2817,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-deleted.js
index 7fad287cc698d..670f07c1ca10f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-deleted.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1943,14 +1995,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2072,14 +2132,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2201,14 +2269,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2314,14 +2390,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2428,14 +2512,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2546,6 +2638,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2568,6 +2664,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2602,8 +2701,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-not-present.js
index 76a0edfbbf16b..d7e58d658810f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-not-present.js
@@ -90,7 +90,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,19 +103,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,7 +141,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -159,7 +163,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,23 +182,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -284,6 +297,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -386,12 +403,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -456,6 +481,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -564,12 +592,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -760,14 +796,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1184,14 +1228,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1681,14 +1733,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1800,14 +1860,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1917,14 +1985,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2030,14 +2106,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2144,14 +2228,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2260,6 +2352,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2282,6 +2378,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2318,8 +2417,16 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index 3e8bc8f44e67a..9eca0557925b4 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index cb04768768791..cf59b1835d47d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index b937f9d88137b..926ac443a0ef3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index fb8bbc512db7c..411cf982811f6 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes-with-timeout-before-request.js
index 64c7997e99481..78abce4b5f16c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes.js
index d12f802a6e8e7..c9b3f36a885e5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/dependency-source-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations-and-deleting-config-file.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations-and-deleting-config-file.js
index 846a4e0474317..fe39b8b8eaedd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations-and-deleting-config-file.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations-and-deleting-config-file.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -460,6 +485,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -619,12 +647,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -721,6 +757,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferred
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -774,20 +814,30 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -971,6 +1021,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -1011,14 +1065,24 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
@@ -1241,14 +1305,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1356,14 +1428,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1484,6 +1564,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferred
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -1541,22 +1625,32 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1674,22 +1768,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1806,22 +1910,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2029,6 +2143,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -2073,16 +2191,26 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
@@ -2218,14 +2346,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2337,14 +2473,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2607,14 +2751,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2716,14 +2868,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2857,14 +3017,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2968,14 +3136,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3247,14 +3423,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3356,14 +3540,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3475,6 +3667,8 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 6 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -3539,16 +3733,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3681,6 +3885,8 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 }
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 7 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -3782,14 +3988,26 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3901,14 +4119,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4015,14 +4241,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4157,14 +4391,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4269,14 +4511,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4553,14 +4803,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4662,14 +4920,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4781,6 +5047,8 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 9 projectProgramVersion: 4 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -4845,16 +5113,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4967,16 +5245,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5081,16 +5369,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5213,6 +5511,8 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/dependency/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 10 projectProgramVersion: 5 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -5325,14 +5625,26 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5444,14 +5756,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5558,14 +5878,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5834,14 +6162,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5943,14 +6279,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations.js
index 21c854f7e4f1f..e26ec87bd6e72 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/goToDef-and-rename-locations.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1185,14 +1229,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1691,14 +1743,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1816,14 +1876,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1939,14 +2007,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2058,14 +2134,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2178,14 +2262,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2302,6 +2394,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2324,6 +2420,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2358,8 +2457,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes-with-timeout-before-request.js
index 9bd7e5872e20f..67eb62fe9ce87 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes.js
index 62957c4804eec..eac37bf4ad707 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/usage-file-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -459,6 +484,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,12 +595,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,14 +799,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -977,14 +1021,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/when-projects-are-not-built.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/when-projects-are-not-built.js
index 5656a120df85c..2be45ee907da8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/when-projects-are-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/configWithReference/when-projects-are-not-built.js
@@ -127,6 +127,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -231,12 +235,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -299,6 +311,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -409,12 +424,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -605,14 +628,22 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1028,14 +1059,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1497,14 +1536,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1609,14 +1656,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1719,14 +1774,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1825,14 +1888,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1932,14 +2003,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2039,6 +2118,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2061,6 +2144,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2098,8 +2184,16 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
index 1085ca73ab565..dcfffc2c17d37 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1160,6 +1218,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1212,6 +1271,54 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1525,6 +1632,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1580,6 +1688,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 9: *ensureProjectForOpenFiles* *deleted*
 10: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
index a558995315f5e..3112a03f7e959 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
index 5644e9827fc75..ae9d515a155fb 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1154,6 +1212,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1228,6 +1287,54 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -1331,6 +1438,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1386,6 +1494,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 7: *ensureProjectForOpenFiles* *deleted*
 8: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
index b68d05c15c9b0..cb9c4d3fd1a79 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
index 46aa0a63e2255..79a297b07f5c0 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes.js
index 4d8ca610a7c51..3a4199dd10489 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-created.js
index 2ce18420852d4..f4e4754d13fd5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-created.js
@@ -86,7 +86,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,19 +99,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -133,7 +137,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -155,7 +159,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,23 +178,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +229,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -280,6 +293,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -382,10 +398,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +465,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -551,12 +576,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -741,14 +774,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -922,14 +963,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -988,14 +1037,22 @@ export declare function fn5(): void;
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts:
@@ -1056,6 +1113,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1113,16 +1171,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1946,16 +2014,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2070,16 +2148,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2192,16 +2280,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2310,16 +2408,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2429,16 +2537,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2554,6 +2672,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2576,6 +2698,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2609,10 +2734,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-deleted.js
index ada92aa277087..1e59b33f7d66a 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-deleted.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1160,6 +1218,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1212,6 +1271,54 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1816,14 +1923,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1943,14 +2058,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2069,14 +2192,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2173,14 +2304,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2278,14 +2417,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2384,6 +2531,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2406,6 +2556,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2439,8 +2592,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-not-present.js
index 384116b2be062..9a9a364390bf2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-not-present.js
@@ -86,7 +86,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,19 +99,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -133,7 +137,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -155,7 +159,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,23 +178,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +229,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -280,6 +293,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -382,10 +398,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -443,6 +465,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -551,12 +576,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -741,14 +774,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1130,14 +1171,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1464,14 +1513,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1572,14 +1629,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1678,14 +1743,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1780,14 +1853,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1883,14 +1964,22 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1985,6 +2074,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2007,6 +2099,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2042,8 +2137,16 @@ PolledWatches *deleted*::
   {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
index 200cefffa448d..a959241158755 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1160,6 +1218,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1212,6 +1271,54 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1524,6 +1631,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1579,6 +1687,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 3
 9: *ensureProjectForOpenFiles* *deleted*
 10: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
index 420b8306da34e..a1ebc496d6dac 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index 15b6eed5d5db8..aa2072c729a6e 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1154,6 +1212,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1228,6 +1287,54 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 5: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -1330,6 +1437,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1385,6 +1493,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/dependency/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 7: *ensureProjectForOpenFiles* *deleted*
 8: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
index f164daef4e031..7e034c19a2b70 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
index cfd602572ea10..108912d27e70f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
index 2a0419029b72f..a60888d36a28c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 0382f06f58ee9..438b690989599 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
index 8e4ea59ead9c1..e1f5dca35c25a 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
index 9e8d8a34e565c..927b4d2c52176 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes.js
index 7c0852e2a3e74..fc728b51c99a3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-created.js
index e979548957e8a..af09e5be62dec 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-created.js
@@ -91,7 +91,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,7 +142,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -160,7 +164,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +234,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -286,6 +299,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -458,6 +483,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -564,14 +592,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -760,16 +798,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -884,16 +932,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1047,16 +1105,26 @@ Before request
 
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -1186,16 +1254,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2014,16 +2092,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2138,16 +2226,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2260,16 +2358,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2378,16 +2486,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2497,16 +2615,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2622,6 +2750,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2644,6 +2776,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2676,10 +2811,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-deleted.js
index 02a45e3b42b4d..3825a50392f7b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-deleted.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1796,16 +1854,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1924,16 +1992,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2052,16 +2130,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2164,16 +2252,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2277,16 +2375,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2396,6 +2504,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2418,6 +2530,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2450,10 +2565,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-not-present.js
index 09e90fb59be63..0879c9d7997df 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-not-present.js
@@ -91,7 +91,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,7 +142,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -160,7 +164,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +234,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -286,6 +299,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -458,6 +483,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -564,14 +592,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -760,16 +798,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -884,16 +932,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1530,16 +1588,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1646,16 +1714,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1760,16 +1838,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1870,16 +1958,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1981,16 +2079,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2096,6 +2204,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2118,6 +2230,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2152,10 +2267,20 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index ad87ce0737422..0402ae91a96b9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index 3982d0c192f6f..a7b312d402141 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index 18196a9163e84..4d5a90c66516c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index 2aad24a10382d..511c76ce0b15a 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations-and-deleting-config-file.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations-and-deleting-config-file.js
index 03f76d764157a..30124385f77a9 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations-and-deleting-config-file.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations-and-deleting-config-file.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -465,6 +490,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -622,14 +650,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -743,6 +781,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -796,20 +838,30 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1003,6 +1055,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -1041,14 +1097,24 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -1279,16 +1345,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1401,16 +1477,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1543,6 +1629,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -1600,22 +1690,32 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1742,22 +1842,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1883,22 +1993,32 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/jsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2116,6 +2236,10 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject2* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (0)
@@ -2158,16 +2282,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/jsconfig.json:
@@ -2311,16 +2445,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2439,16 +2583,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2722,16 +2876,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2845,16 +3009,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2999,16 +3173,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3124,16 +3308,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3417,16 +3611,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3540,16 +3744,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3729,16 +3943,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -3939,16 +4163,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4033,16 +4267,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4156,16 +4400,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4311,16 +4565,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4437,16 +4701,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4733,16 +5007,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -4856,16 +5140,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5045,16 +5339,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5142,16 +5446,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5265,16 +5579,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5501,16 +5825,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5595,16 +5929,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -5718,16 +6062,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -6006,16 +6360,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -6129,16 +6493,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations.js
index 90a304558e2ad..2874087c1474b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/goToDef-and-rename-locations.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1707,16 +1765,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1831,16 +1899,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1953,16 +2031,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2071,16 +2159,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2190,16 +2288,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -2315,6 +2423,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -2337,6 +2449,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency 1 undefined Config: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -2369,10 +2484,20 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
index 8058aabbbdbab..a01f79bd39e0d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes.js
index f372bab1d210e..6ed03c8e52f23 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/dependencyAndUsage/disabledSourceRef/usage-file-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -461,6 +486,9 @@ Info seq  [hh:mm:ss:mss] event:
       }
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/dependency/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/dependency/tsconfig.json WatchType: Type roots
@@ -567,14 +595,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -763,16 +801,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -885,16 +933,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/dependency/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/can-go-to-definition-correctly.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/can-go-to-definition-correctly.js
index 38525567b234f..f4ad5d5e9c2ea 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/can-go-to-definition-correctly.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/can-go-to-definition-correctly.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -961,14 +1002,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1068,14 +1117,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1173,14 +1230,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1274,14 +1339,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1385,6 +1458,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1417,8 +1494,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
index d1f98c0bee8bb..7be004fa0825d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -791,6 +832,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -843,6 +885,48 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -976,6 +1060,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1031,6 +1116,46 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
index 0f57d09ebf96a..04c8592f01d27 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
index ef6829f3f7556..bb91acfaf0fa7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -784,6 +825,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -841,6 +883,48 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -918,6 +1002,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -973,6 +1058,46 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 1
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 5: *ensureProjectForOpenFiles* *new*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
index 1917306079fe3..bf0bad30085ee 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-change-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
index 25eb6cf577a22..805870f68d1ca 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes.js
index 4acbb37a67cb4..727361c13d445 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-created.js
index 73768ea9e3144..52b696423cbaa 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-created.js
@@ -80,7 +80,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,19 +93,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +131,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -149,7 +153,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,23 +172,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,7 +223,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -253,6 +266,9 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -354,10 +370,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -524,12 +546,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -652,6 +680,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -710,14 +739,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1026,14 +1063,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1133,14 +1178,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1238,14 +1291,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1339,14 +1400,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1450,6 +1519,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1482,8 +1555,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-deleted.js
index 1cde6680ae901..872aa1268e889 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-deleted.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -791,6 +832,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -843,6 +885,48 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1099,12 +1183,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1210,12 +1300,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1319,12 +1415,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1399,12 +1501,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1484,6 +1592,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1515,6 +1626,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-not-present.js
index 979cc84861eb3..cc7069f90ccf2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-not-present.js
@@ -80,7 +80,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -93,19 +93,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -127,7 +131,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -149,7 +153,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -168,23 +172,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -210,7 +223,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -253,6 +266,9 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -354,10 +370,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -524,12 +546,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -862,12 +890,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -948,12 +982,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1032,12 +1072,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1112,12 +1158,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1197,6 +1249,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1228,6 +1283,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
index fbaab31b288d8..7d6372f6eac72 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -791,6 +832,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -843,6 +885,48 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -975,6 +1059,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1030,6 +1115,46 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
index 62f0fbe7b080b..337f4b06e7afd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index f1d464967e0a5..54af3fc38f008 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -784,6 +825,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -841,6 +883,48 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -917,6 +1001,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -972,6 +1057,46 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 1
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 5: *ensureProjectForOpenFiles* *new*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
index 10c2b1b4ac3b1..19bae71badc14 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
index b74702dfea97a..f43b76d784a93 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
index c5d716d7951bd..c0acdda3a498d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 90f29b3682936..d12c259c8f086 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
index 85cfcbc59e222..7cc78aafdf0f8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
index 1a985951b1c25..5dfa5a6480051 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes.js
index 320a2453383de..0dd15743f0954 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-created.js
index d2c2dbab24db4..9555de8a63653 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-created.js
@@ -85,7 +85,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -259,6 +272,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -361,12 +378,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -537,14 +562,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,14 +680,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -697,14 +738,22 @@ Before request
 
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -799,14 +848,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1112,14 +1169,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1219,14 +1284,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1324,14 +1397,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1425,14 +1506,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1536,6 +1625,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1568,8 +1661,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-deleted.js
index 134b5c7b8a945..6191d58b2a054 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-deleted.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1081,14 +1122,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1192,14 +1241,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1303,14 +1360,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1398,14 +1463,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1503,6 +1576,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1535,8 +1612,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-not-present.js
index 8029b2ea9671f..4450595ee3adb 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-not-present.js
@@ -85,7 +85,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -259,6 +272,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -361,12 +378,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -537,14 +562,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -647,14 +680,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -924,14 +965,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1018,14 +1067,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1110,14 +1167,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1198,14 +1263,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1294,6 +1367,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1327,8 +1404,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index 387e51e0123f1..8aa7276e94d25 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index 72f557447d204..66e4c95b73a31 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index 038bda3896376..42e8fa65a95bd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index b26a3d897b8ba..e9635ad961f14 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes-with-timeout-before-request.js
index f2267b1666d8c..41a26d960891f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes-with-timeout-before-request.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes.js
index d1617f70f468c..fe9081e0dba45 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configHasNoReference/usage-file-changes.js
@@ -88,7 +88,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -101,19 +101,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -135,7 +139,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -157,7 +161,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -176,23 +180,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -218,7 +231,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -262,6 +275,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -364,12 +381,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -540,14 +565,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -649,14 +682,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/can-go-to-definition-correctly.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/can-go-to-definition-correctly.js
index 01a56ece58c7b..9e9f5d533900d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/can-go-to-definition-correctly.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/can-go-to-definition-correctly.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -917,14 +950,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1013,14 +1054,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1107,14 +1156,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1197,14 +1254,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1300,6 +1365,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1330,8 +1399,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-action-before-write.js
index 11cc3cf2294c0..9ed6b0bb77afd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-no-timeout.js
index ad00a8be3f6cf..3f59070b6c791 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
index 514da2f6ff289..2e8c173265dff 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
index e42f6fe5b0008..2e8eefb58e72b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-change-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes-with-timeout-before-request.js
index b7cc92bf5c7d0..91c4ef177f211 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes.js
index 6c6cf0d07ffc4..8385b4244369d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-created.js
index 4b6bbc516a5a5..66e5372a6d4e0 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-created.js
@@ -85,7 +85,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -279,6 +292,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -381,12 +398,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -561,14 +586,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -978,14 +1011,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1074,14 +1115,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1168,14 +1217,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1258,14 +1315,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1361,6 +1426,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1391,8 +1460,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-deleted.js
index 4255a41bb659d..6235edb012cd5 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-deleted.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -979,14 +1012,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1075,14 +1116,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1169,14 +1218,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1259,14 +1316,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1362,6 +1427,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1392,8 +1461,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-not-present.js
index 2b5b10bcb510f..07702e6351b42 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-not-present.js
@@ -85,7 +85,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -98,19 +98,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -132,7 +136,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -154,7 +158,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -173,23 +177,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -215,7 +228,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -279,6 +292,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -381,12 +398,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -561,14 +586,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -909,14 +942,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1005,14 +1046,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1099,14 +1148,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1189,14 +1246,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1292,6 +1357,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1322,8 +1391,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
index 4accfbdd3a59f..218a349f22e45 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
index 5677e5b2ab362..d7d5dad6f7156 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index 0baa721171b66..e079861944e88 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
index 8e61859628c2e..52c7cabd594e3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
index f56013003c657..13cd4865d6cfd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
index abc8ef4684800..51718147d6b3e 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 9804da662e2a8..8be44f09cac2f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
index a23306fe21c54..58ad427133c3b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
index f3fdb6fe39d54..fe349bf78c1a2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes.js
index 601ddaa313e34..0b753384f81f8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-created.js
index 491ea4db51db0..074e853dba293 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-created.js
@@ -90,7 +90,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,19 +103,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,7 +141,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -159,7 +163,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,23 +182,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -284,6 +297,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -386,12 +403,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -566,14 +591,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -971,14 +1004,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1067,14 +1108,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1161,14 +1210,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1251,14 +1308,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1354,6 +1419,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1384,8 +1453,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-deleted.js
index b11cbe4d11f5f..5450eccc196c6 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-deleted.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -972,14 +1005,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1068,14 +1109,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1162,14 +1211,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1252,14 +1309,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1355,6 +1420,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1385,8 +1454,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-not-present.js
index 2a7e6464435f9..c22e944f27a5d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-not-present.js
@@ -90,7 +90,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -103,19 +103,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -137,7 +141,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -159,7 +163,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -178,23 +182,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -220,7 +233,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -284,6 +297,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -386,12 +403,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -566,14 +591,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -914,14 +947,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1010,14 +1051,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1104,14 +1153,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1194,14 +1251,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1297,6 +1362,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1327,8 +1396,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index f2287ff481830..9703d24a142dc 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index 924e57a624e83..88fe84c1fb9fa 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index c059b118d5cba..b03d5ed8b2ad0 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index 3b343f0b18392..d75b59f113980 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes-with-timeout-before-request.js
index bee80295c7478..2349cdd81ec93 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes.js
index f7d5d27e55723..e89c0e2e10262 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/dependency-source-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes-with-timeout-before-request.js
index 7db916ae0b39a..6cb399a522bc7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes-with-timeout-before-request.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes.js
index 9ea741c50cf4d..2fde84858c725 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/usage-file-changes.js
@@ -93,7 +93,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -106,19 +106,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -140,7 +144,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -162,7 +166,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -181,23 +185,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -223,7 +236,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -287,6 +300,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/when-projects-are-not-built.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/when-projects-are-not-built.js
index ca8777a06bbf3..6ad3b94796eed 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/when-projects-are-not-built.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/configWithReference/when-projects-are-not-built.js
@@ -127,6 +127,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/FnS.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -231,12 +235,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -411,14 +423,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -759,14 +779,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -855,14 +883,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -949,14 +985,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1039,14 +1083,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1140,6 +1192,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1172,8 +1228,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls:
   {"pollingInterval":500}
+/user/username/projects/myproject/dependency/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/can-go-to-definition-correctly.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/can-go-to-definition-correctly.js
index 97becebbf7095..a210d1c942492 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/can-go-to-definition-correctly.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/can-go-to-definition-correctly.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1001,14 +1042,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1112,14 +1161,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1221,14 +1278,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1326,14 +1391,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1444,6 +1517,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1476,8 +1553,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
index 5f3dfdf847fdf..4981ac710c427 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -831,6 +872,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -883,6 +925,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1016,6 +1104,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1071,6 +1160,50 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
index 6cc3d09e6a93f..fae43d92e4447 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
index 24d9d7899dbfb..8a7c458ff17ee 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -824,6 +865,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -881,6 +923,52 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -958,6 +1046,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1013,6 +1102,50 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 1
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 5: *ensureProjectForOpenFiles* *new*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
index 2dbd77b74b987..13267cd6531a8 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-change-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
index 2c8803068fd24..f20172f88f34c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes.js
index 4b5ee5e1646b5..796a3fcf14b9b 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-created.js
index 18a276f3bf5b2..7ea0bc18a5716 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-created.js
@@ -86,7 +86,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,19 +99,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -133,7 +137,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -155,7 +159,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,23 +178,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +229,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -280,6 +293,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -382,10 +398,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -556,12 +578,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -688,6 +716,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -746,14 +775,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1066,14 +1103,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1177,14 +1222,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1286,14 +1339,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1391,14 +1452,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1509,6 +1578,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1541,8 +1614,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-deleted.js
index 8c4b3c9e9757c..193ee9a4878e4 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-deleted.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -831,6 +872,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -883,6 +925,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1139,12 +1227,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1254,12 +1348,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1367,12 +1467,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1451,12 +1557,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1543,6 +1655,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1574,6 +1689,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-not-present.js
index de62819156fee..75a071e814b9c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-not-present.js
@@ -86,7 +86,7 @@ function fn5() { }
 {"version":3,"file":"FnS.d.ts","sourceRoot":"","sources":["../dependency/FnS.ts"],"names":[],"mappings":"AAAA,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM;AACzB,wBAAgB,GAAG,SAAM"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -99,19 +99,23 @@ function fn5() { }
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -133,7 +137,7 @@ function fn5() { }
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -155,7 +159,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -174,23 +178,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -216,7 +229,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -280,6 +293,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -382,10 +398,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -556,12 +578,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -898,12 +926,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -988,12 +1022,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1076,12 +1116,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1160,12 +1206,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1252,6 +1304,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1283,6 +1338,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
index ed207796db8ac..bd378ed749ed2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -831,6 +872,7 @@ Info seq  [hh:mm:ss:mss] request:
       "type": "request"
     }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -883,6 +925,52 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 1: /user/username/projects/myproject/main/tsconfig.json
@@ -1015,6 +1103,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1070,6 +1159,50 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
index 16512fd0affa9..565220a2cd637 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
index d1f5ec3fd78a5..83431e498110f 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -824,6 +865,7 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/main/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -881,6 +923,52 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 0
 3: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 
@@ -957,6 +1045,7 @@ Info seq  [hh:mm:ss:mss] request:
     }
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/main/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/main/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -1012,6 +1101,50 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/main/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/random/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/user/username/projects/myproject/decls/FnS.d.ts.map:
+  {}
+/user/username/projects/myproject/decls/fns.d.ts:
+  {}
+/user/username/projects/myproject/dependency/FnS.ts:
+  {}
+/user/username/projects/myproject/dependency/tsconfig.json:
+  {}
+/user/username/projects/myproject/main/tsconfig.json:
+  {}
+/user/username/projects/myproject/random/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/user/username/projects/myproject/decls:
+  {}
+/user/username/projects/myproject/dependency:
+  {}
+/user/username/projects/myproject/main:
+  {}
+/user/username/projects/myproject/random:
+  {}
+
 Timeout callback:: count: 1
 4: /user/username/projects/myproject/main/tsconfig.jsonFailedLookupInvalidation *deleted*
 5: *ensureProjectForOpenFiles* *new*
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
index e928cc3f19008..7f4212f9ff4ae 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dts-rewrite-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
index 39aa38cfd1672..8e72555f0e29c 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
index ea7cf58d39230..411403009cb97 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
index 086734a8c3fae..47f25b6bca381 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
index 2cf118af32255..81f52970419c3 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-change-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
index 80e13e548a792..eddbab05bfec7 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes.js
index 234144ca7338f..6ebe4af753739 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-created.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-created.js
index 901186df12cf1..ce846ade242eb 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-created.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-created.js
@@ -91,7 +91,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,7 +142,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -160,7 +164,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +234,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -286,6 +299,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -683,14 +716,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -737,14 +778,22 @@ Before request
 
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
@@ -843,14 +892,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1160,14 +1217,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1271,14 +1336,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1380,14 +1453,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1485,14 +1566,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1603,6 +1692,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1635,8 +1728,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-deleted.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-deleted.js
index 2abad411d0160..0d370b392a10d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-deleted.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-deleted.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1121,14 +1162,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1236,14 +1285,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1351,14 +1408,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1450,14 +1515,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1562,6 +1635,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1594,8 +1671,16 @@ PolledWatches::
   {"pollingInterval":500}
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-not-present.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-not-present.js
index 982d83f1a5634..6dd84fe058361 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-not-present.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-not-present.js
@@ -91,7 +91,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -104,19 +104,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -138,7 +142,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -160,7 +164,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -179,23 +183,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -221,7 +234,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -286,6 +299,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -389,12 +406,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -569,14 +594,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -683,14 +716,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -964,14 +1005,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1062,14 +1111,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1158,14 +1215,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1250,14 +1315,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -1353,6 +1426,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/dependency/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -1386,8 +1463,16 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/decls/FnS.d.ts.map:
   {"pollingInterval":2000}
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
index f4007b3a2c8f4..d1445e3101ac2 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-action-before-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
index aef9ea9a9343e..96ae5c3ae460d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-no-timeout.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
index f6ead5aa0979a..b5f70c3d4e3dd 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-delete.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
index a733cd41d2fdf..29635636dd4ae 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/dependency-dtsMap-rewrite-as-rename-timeout-after-write.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes-with-timeout-before-request.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
index 2a3850e95e417..6bfa302e3878d 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes-with-timeout-before-request.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes.js b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes.js
index 7c4672b24458f..0d6e5f2410ce4 100644
--- a/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes.js
+++ b/tests/baselines/reference/tsserver/projectReferencesSourcemap/usageProject/disabledSourceRef/usage-file-changes.js
@@ -94,7 +94,7 @@ export declare function fn5(): void;
 //# sourceMappingURL=FnS.d.ts.map
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","./fns.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n","signature":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1}],"root":[2],"options":{"composite":true,"declarationDir":"../decls","declarationMap":true},"referencedMap":[],"semanticDiagnosticsPerFile":[1,2],"latestChangedDtsFile":"../decls/FnS.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/dependency/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -107,19 +107,23 @@ export declare function fn5(): void;
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "./fns.ts": {
         "original": {
           "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+          "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
         },
         "version": "-18619918033-export function fn1() { }\nexport function fn2() { }\nexport function fn3() { }\nexport function fn4() { }\nexport function fn5() { }\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -141,7 +145,7 @@ export declare function fn5(): void;
     "latestChangedDtsFile": "../decls/FnS.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1077
+  "size": 1113
 }
 
 //// [/user/username/projects/myproject/main/main.js]
@@ -163,7 +167,7 @@ export {};
 //# sourceMappingURL=main.d.ts.map
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo]
-{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true},"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n"}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
+{"program":{"fileNames":["../../../../../a/lib/lib.d.ts","../decls/fns.d.ts","./main.ts"],"fileInfos":[{"version":"-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }","affectsGlobalScope":true,"impliedFormat":1},{"version":"-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n","impliedFormat":1},{"version":"-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n","signature":"-3531856636-export {};\n","impliedFormat":1}],"root":[3],"options":{"composite":true,"declarationMap":true},"fileIdsList":[[2]],"referencedMap":[[3,1]],"semanticDiagnosticsPerFile":[1,2,3],"latestChangedDtsFile":"./main.d.ts"},"version":"FakeTSVersion"}
 
 //// [/user/username/projects/myproject/main/tsconfig.tsbuildinfo.readable.baseline.txt]
 {
@@ -182,23 +186,32 @@ export {};
       "../../../../../a/lib/lib.d.ts": {
         "original": {
           "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-          "affectsGlobalScope": true
+          "affectsGlobalScope": true,
+          "impliedFormat": 1
         },
         "version": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
         "signature": "-7698705165-/// <reference no-default-lib=\"true\"/>\ninterface Boolean {}\ninterface Function {}\ninterface CallableFunction {}\ninterface NewableFunction {}\ninterface IArguments {}\ninterface Number { toExponential: any; }\ninterface Object {}\ninterface RegExp {}\ninterface String { charAt: any; }\ninterface Array<T> { length: number; [n: number]: T; }",
-        "affectsGlobalScope": true
+        "affectsGlobalScope": true,
+        "impliedFormat": "commonjs"
       },
       "../decls/fns.d.ts": {
+        "original": {
+          "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+          "impliedFormat": 1
+        },
         "version": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
-        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n"
+        "signature": "-18267052502-export declare function fn1(): void;\nexport declare function fn2(): void;\nexport declare function fn3(): void;\nexport declare function fn4(): void;\nexport declare function fn5(): void;\n",
+        "impliedFormat": "commonjs"
       },
       "./main.ts": {
         "original": {
           "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-          "signature": "-3531856636-export {};\n"
+          "signature": "-3531856636-export {};\n",
+          "impliedFormat": 1
         },
         "version": "-805644102-import {\n    fn1,\n    fn2,\n    fn3,\n    fn4,\n    fn5\n} from '../decls/fns'\n\nfn1();\nfn2();\nfn3();\nfn4();\nfn5();\n",
-        "signature": "-3531856636-export {};\n"
+        "signature": "-3531856636-export {};\n",
+        "impliedFormat": "commonjs"
       }
     },
     "root": [
@@ -224,7 +237,7 @@ export {};
     "latestChangedDtsFile": "./main.d.ts"
   },
   "version": "FakeTSVersion",
-  "size": 1105
+  "size": 1171
 }
 
 
@@ -289,6 +302,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/fns.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/decls/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/package.json 2000 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/main/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/main/tsconfig.json WatchType: Type roots
@@ -392,12 +409,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -572,14 +597,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -685,14 +718,22 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/decls/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/main/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/main/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/random/node_modules/@types:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projects/Orphan-source-files-are-handled-correctly-on-watch-trigger.js b/tests/baselines/reference/tsserver/projects/Orphan-source-files-are-handled-correctly-on-watch-trigger.js
index ca00c6f28f1d6..595539cbde37d 100644
--- a/tests/baselines/reference/tsserver/projects/Orphan-source-files-are-handled-correctly-on-watch-trigger.js
+++ b/tests/baselines/reference/tsserver/projects/Orphan-source-files-are-handled-correctly-on-watch-trigger.js
@@ -64,6 +64,9 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/file2.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -161,8 +164,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projects/file-opened-is-in-configured-project-that-will-be-removed.js b/tests/baselines/reference/tsserver/projects/file-opened-is-in-configured-project-that-will-be-removed.js
index 94be5e3eb17af..b89de823ad450 100644
--- a/tests/baselines/reference/tsserver/projects/file-opened-is-in-configured-project-that-will-be-removed.js
+++ b/tests/baselines/reference/tsserver/projects/file-opened-is-in-configured-project-that-will-be-removed.js
@@ -73,6 +73,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/spec.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/playground/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
@@ -175,10 +181,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -243,10 +261,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -326,6 +356,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/playground/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src 1 undefined Config: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src 1 undefined Config: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Type roots
@@ -419,6 +454,12 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground 1 undefined Config: /user/username/projects/myproject/playground/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground 1 undefined Config: /user/username/projects/myproject/playground/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
@@ -442,12 +483,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/tsconfig-json/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -532,6 +587,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -605,24 +665,36 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/tsconfig-json/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projects/files-opened-and-closed-affecting-multiple-projects.js b/tests/baselines/reference/tsserver/projects/files-opened-and-closed-affecting-multiple-projects.js
index 1b9045e3d3611..2172473e9e5b4 100644
--- a/tests/baselines/reference/tsserver/projects/files-opened-and-closed-affecting-multiple-projects.js
+++ b/tests/baselines/reference/tsserver/projects/files-opened-and-closed-affecting-multiple-projects.js
@@ -63,6 +63,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/projects/config/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/files/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/files/package.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/package.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/config/package.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/config/node_modules/@types 1 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/config/node_modules/@types 1 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/node_modules/@types 1 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Type roots
@@ -160,8 +163,14 @@ After request
 PolledWatches::
 /a/b/projects/config/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/config/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/projects/files/package.json: *new*
+  {"pollingInterval":2000}
 /a/b/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/projects/config/tsconfig.json: *new*
@@ -226,8 +235,14 @@ After request
 PolledWatches::
 /a/b/projects/config/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/config/package.json:
+  {"pollingInterval":2000}
+/a/b/projects/files/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/projects/config/tsconfig.json:
@@ -286,8 +301,14 @@ After request
 PolledWatches::
 /a/b/projects/config/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/config/package.json:
+  {"pollingInterval":2000}
+/a/b/projects/files/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/projects/config/file.ts: *new*
@@ -338,6 +359,8 @@ Info seq  [hh:mm:ss:mss] For info: /a/b/projects/files/file2.ts :: No config fil
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/files/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/files/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/files/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/files/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/files/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -374,6 +397,9 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/config 1 undefined Config: /a/b/projects/config/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/config 1 undefined Config: /a/b/projects/config/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/b/projects/config/tsconfig.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/b/projects/files/package.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/b/projects/package.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /a/b/projects/config/package.json 2000 undefined Project: /a/b/projects/config/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/config/node_modules/@types 1 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/config/node_modules/@types 1 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/node_modules/@types 1 undefined Project: /a/b/projects/config/tsconfig.json WatchType: Type roots
@@ -399,14 +425,20 @@ PolledWatches::
   {"pollingInterval":2000}
 /a/b/projects/files/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/files/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/files/tsconfig.json: *new*
   {"pollingInterval":2000}
 /a/b/projects/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /a/b/projects/config/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/config/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -478,6 +510,8 @@ Info seq  [hh:mm:ss:mss] 		Projects:
 Info seq  [hh:mm:ss:mss] 	FileName: /a/b/projects/files/file2.ts ProjectRootPath: undefined
 Info seq  [hh:mm:ss:mss] 		Projects: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/files/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/files/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/files/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
diff --git a/tests/baselines/reference/tsserver/projects/handles-delayed-directory-watch-invoke-on-file-creation.js b/tests/baselines/reference/tsserver/projects/handles-delayed-directory-watch-invoke-on-file-creation.js
index 7d8914ee64a61..4bc63329859a8 100644
--- a/tests/baselines/reference/tsserver/projects/handles-delayed-directory-watch-invoke-on-file-creation.js
+++ b/tests/baselines/reference/tsserver/projects/handles-delayed-directory-watch-invoke-on-file-creation.js
@@ -62,6 +62,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/sub/a.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/sub/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -159,8 +162,14 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/sub/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -226,8 +235,14 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/sub/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -348,6 +363,7 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /users/username/projects/project
 Info seq  [hh:mm:ss:mss] For info: /users/username/projects/project/a.ts :: Config file name: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/project/sub/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/project/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -379,6 +395,30 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/users/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types:
+  {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/users/username/projects/project/sub/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {}
+/users/username/projects/project/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/users/username/projects/project:
+  {}
+
 Projects::
 /users/username/projects/project/tsconfig.json (Configured) *changed*
     projectStateVersion: 2
@@ -582,12 +622,16 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/a.ts: *new*
   {"pollingInterval":500}
 /users/username/projects/project/jsconfig.json: *new*
   {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/sub/jsconfig.json: *new*
   {"pollingInterval":2000}
 /users/username/projects/project/sub/node_modules/@types: *new*
@@ -786,8 +830,12 @@ After running Timeout callback:: count: 2
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/sub/node_modules/@types:
   {"pollingInterval":500}
 
diff --git a/tests/baselines/reference/tsserver/projects/no-project-structure-update-on-directory-watch-invoke-on-open-file-save.js b/tests/baselines/reference/tsserver/projects/no-project-structure-update-on-directory-watch-invoke-on-open-file-save.js
index ce60368069fa7..a1dccf9b6cb3c 100644
--- a/tests/baselines/reference/tsserver/projects/no-project-structure-update-on-directory-watch-invoke-on-open-file-save.js
+++ b/tests/baselines/reference/tsserver/projects/no-project-structure-update-on-directory-watch-invoke-on-open-file-save.js
@@ -42,6 +42,8 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -182,8 +184,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/projects/references-on-file-opened-is-in-configured-project-that-will-be-removed.js b/tests/baselines/reference/tsserver/projects/references-on-file-opened-is-in-configured-project-that-will-be-removed.js
index 2ecf8a7fc092f..8c806be1dcf43 100644
--- a/tests/baselines/reference/tsserver/projects/references-on-file-opened-is-in-configured-project-that-will-be-removed.js
+++ b/tests/baselines/reference/tsserver/projects/references-on-file-opened-is-in-configured-project-that-will-be-removed.js
@@ -73,6 +73,12 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/spec.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/playground/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
@@ -175,10 +181,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -243,10 +261,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -326,6 +356,11 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/playground/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src 1 undefined Config: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src 1 undefined Config: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig-json/tsconfig.json WatchType: Type roots
@@ -419,6 +454,12 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground 1 undefined Config: /user/username/projects/myproject/playground/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground 1 undefined Config: /user/username/projects/myproject/playground/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Config file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/src/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/package.json 2000 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/playground/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/playground/tsconfig.json WatchType: Type roots
@@ -442,12 +483,26 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/tsconfig-json/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -534,6 +589,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/tests/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -611,18 +671,28 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/tsconfig-json/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/playground/tsconfig-json/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/playground/tsconfig-json/tests/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/spec.d.ts: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/playground/tsconfig-json/tests/tsconfig.json: *new*
@@ -631,6 +701,8 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projects/requests-are-done-on-file-on-pendingReload-but-has-svc-for-previous-version.js b/tests/baselines/reference/tsserver/projects/requests-are-done-on-file-on-pendingReload-but-has-svc-for-previous-version.js
index 90e25ae44dd82..355dd3cbfad97 100644
--- a/tests/baselines/reference/tsserver/projects/requests-are-done-on-file-on-pendingReload-but-has-svc-for-previous-version.js
+++ b/tests/baselines/reference/tsserver/projects/requests-are-done-on-file-on-pendingReload-but-has-svc-for-previous-version.js
@@ -62,6 +62,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/file1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -160,8 +163,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -226,8 +235,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -286,8 +301,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-redirect-info-when-requested.js b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-redirect-info-when-requested.js
index c5e1b5715d41e..37d2939c10653 100644
--- a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-redirect-info-when-requested.js
+++ b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-redirect-info-when-requested.js
@@ -77,6 +77,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/A 1 undefined Config: /users/username/projects/project/A/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/A/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/A/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/A/node_modules/@types 1 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/A/node_modules/@types 1 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: Type roots
@@ -178,10 +181,16 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/A/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -252,6 +261,10 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/B/tsconfig.jso
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B 1 undefined Config: /users/username/projects/project/B/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B 1 undefined Config: /users/username/projects/project/B/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/B/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/A/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/B/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B/node_modules/@types 1 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B/node_modules/@types 1 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: Type roots
@@ -362,12 +375,20 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/A/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/A/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/B/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/B/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-updates-to-redirect-info-when-requested.js b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-updates-to-redirect-info-when-requested.js
index 47e48395f99ca..9aef337136d31 100644
--- a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-updates-to-redirect-info-when-requested.js
+++ b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-provides-updates-to-redirect-info-when-requested.js
@@ -80,6 +80,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/A 1 undefined Config: /users/username/projects/project/A/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/A/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/A/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/A/node_modules/@types 1 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/A/node_modules/@types 1 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/A/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/A/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -257,6 +266,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B 1 undefined Config: /users/username/projects/project/B/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/B/b2.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/B/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/B/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B/node_modules/@types 1 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/B/node_modules/@types 1 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/B/tsconfig.json WatchType: Type roots
@@ -368,12 +380,20 @@ After request
 PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/A/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/A/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/B/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/B/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -674,6 +694,7 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/project/A/tsconfig.jso
  }
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/A/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/B/package.json 2000 undefined Project: /users/username/projects/project/A/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/project/A/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/project/A/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
diff --git a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved-and-redirect-info-is-requested.js b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved-and-redirect-info-is-requested.js
index 6ed58f71d0a42..64545ddf55227 100644
--- a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved-and-redirect-info-is-requested.js
+++ b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved-and-redirect-info-is-requested.js
@@ -59,6 +59,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 1 undefined Config: /user/username/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -159,10 +161,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig_base.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved.js b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved.js
index af012959bfcd1..b9e42f1e875c2 100644
--- a/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved.js
+++ b/tests/baselines/reference/tsserver/projects/synchronizeProjectList-returns-correct-information-when-base-configuration-file-cannot-be-resolved.js
@@ -59,6 +59,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 1 undefined Config: /user/username/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -159,10 +161,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig_base.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/sample-project.js b/tests/baselines/reference/tsserver/projectsWithReferences/sample-project.js
index 29c68a7598a60..fbfc32f40eff3 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/sample-project.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/sample-project.js
@@ -183,6 +183,11 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/sample1/logic/index.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/sample1/core/anotherModule.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/sample1/core/package.json 2000 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/sample1/package.json 2000 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/sample1/logic/package.json 2000 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/sample1/tests/package.json 2000 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/sample1/tests/node_modules/@types 1 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/sample1/tests/node_modules/@types 1 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/sample1/node_modules/@types 1 undefined Project: /user/username/projects/sample1/tests/tsconfig.json WatchType: Type roots
@@ -297,10 +302,20 @@ After request
 PolledWatches::
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/core/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/sample1/logic/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/sample1/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/sample1/tests/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/sample1/tests/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-referenced-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-referenced-config-file.js
index 307998a491f6c..05cb4c627aace 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-referenced-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-referenced-config-file.js
@@ -173,6 +173,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -279,12 +285,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -376,6 +394,7 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/b/tsconfig.js
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -428,12 +447,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -576,6 +609,7 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/a/tsconfig.js
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -630,12 +664,24 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-transitively-referenced-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-transitively-referenced-config-file.js
index 1a86b0c7db29d..b33f3ec2f6732 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-transitively-referenced-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-deleting-transitively-referenced-config-file.js
@@ -173,6 +173,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -279,12 +285,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-in-referenced-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-in-referenced-config-file.js
index 2e177e7c19235..ac5f85a3cdb95 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-in-referenced-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-in-referenced-config-file.js
@@ -173,6 +173,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -279,12 +285,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -415,8 +433,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/b/tsconfig.js
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/a.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -471,12 +491,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -607,8 +643,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/b/tsconfig.js
 }
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -663,12 +701,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-on-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-on-config-file.js
index fb19231621672..6bb073b6a0f8a 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-on-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-edit-on-config-file.js
@@ -173,6 +173,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -279,12 +285,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -424,8 +442,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/a.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -500,12 +520,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -645,8 +681,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/c/tsconfig.js
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -721,12 +759,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-non-local-edit.js b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-non-local-edit.js
index 710124953b93e..a4ab5cbfda962 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-non-local-edit.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/transitive-references-with-non-local-edit.js
@@ -173,6 +173,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -279,12 +285,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-referenced-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-referenced-config-file.js
index eb05d1f0d4648..27ec451a04908 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-referenced-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-referenced-config-file.js
@@ -170,6 +170,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -276,12 +282,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -382,6 +400,7 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/tsconfig.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -434,12 +453,26 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -585,6 +618,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Config: /user/username/projects/myproject/a/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -639,12 +673,24 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-transitively-referenced-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-transitively-referenced-config-file.js
index d89993a3e12a3..e22b93091c09e 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-transitively-referenced-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-deleting-transitively-referenced-config-file.js
@@ -170,6 +170,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -276,12 +282,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-in-referenced-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-in-referenced-config-file.js
index 878f60b80791e..cacab0935701e 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-in-referenced-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-in-referenced-config-file.js
@@ -170,6 +170,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -276,12 +282,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -411,8 +429,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/b/tsconfig.js
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/a.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -467,12 +487,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -600,8 +636,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/b/tsconfig.js
 }
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -656,12 +694,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-on-config-file.js b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-on-config-file.js
index c0b48df2340cd..5dc02ca2ee99b 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-on-config-file.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-edit-on-config-file.js
@@ -170,6 +170,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -276,12 +282,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -420,8 +438,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/a.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -496,12 +516,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/nrefs/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/refs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -640,8 +676,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/c/tsconfig.js
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/nrefs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/c/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/c/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
@@ -716,12 +754,28 @@ Info seq  [hh:mm:ss:mss] event:
 After running Timeout callback:: count: 0
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/myproject/nrefs/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-non-local-edit.js b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-non-local-edit.js
index f60406c06a293..3b1973ef358a0 100644
--- a/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-non-local-edit.js
+++ b/tests/baselines/reference/tsserver/projectsWithReferences/trasitive-references-without-files-with-non-local-edit.js
@@ -170,6 +170,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/a/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/b/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/refs/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/package.json 2000 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/c/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/c/tsconfig.json WatchType: Type roots
@@ -276,12 +282,24 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/a/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/c/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/c/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/refs/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/reloadProjects/configured-project.js b/tests/baselines/reference/tsserver/reloadProjects/configured-project.js
index f4c2c4632073d..55a91450aa5c5 100644
--- a/tests/baselines/reference/tsserver/reloadProjects/configured-project.js
+++ b/tests/baselines/reference/tsserver/reloadProjects/configured-project.js
@@ -110,6 +110,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -205,10 +207,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -260,6 +266,8 @@ Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts ::
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -292,6 +300,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -366,14 +378,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -434,6 +458,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -464,6 +492,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig.json
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -538,12 +570,28 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -601,6 +649,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -634,6 +686,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -706,12 +762,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/file2: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/reloadProjects/external-project-with-config-file.js b/tests/baselines/reference/tsserver/reloadProjects/external-project-with-config-file.js
index fa39d9b027a11..26f37a63bbd5c 100644
--- a/tests/baselines/reference/tsserver/reloadProjects/external-project-with-config-file.js
+++ b/tests/baselines/reference/tsserver/reloadProjects/external-project-with-config-file.js
@@ -125,6 +125,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -208,10 +210,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -272,10 +278,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -327,6 +337,8 @@ Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts ::
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -359,6 +371,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -433,14 +449,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -501,6 +529,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -531,6 +563,10 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig.json
 }
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -605,12 +641,28 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -668,6 +720,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: Config file name: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -701,6 +757,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -773,12 +833,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/file2: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/reloadProjects/external-project.js b/tests/baselines/reference/tsserver/reloadProjects/external-project.js
index 4705d866c0188..459a6673886e4 100644
--- a/tests/baselines/reference/tsserver/reloadProjects/external-project.js
+++ b/tests/baselines/reference/tsserver/reloadProjects/external-project.js
@@ -83,6 +83,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
@@ -153,10 +155,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -209,10 +215,14 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -258,6 +268,8 @@ Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts ::
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
@@ -265,6 +277,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/pro
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
@@ -319,14 +335,26 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -383,11 +411,19 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/project.sln
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
@@ -442,12 +478,28 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -501,6 +553,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
@@ -510,6 +566,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/file2.ts 500 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Missing file
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.sln WatchType: Type roots
@@ -563,12 +623,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/file2: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/reloadProjects/inferred-project.js b/tests/baselines/reference/tsserver/reloadProjects/inferred-project.js
index e008fe7679de6..f2644f447fa24 100644
--- a/tests/baselines/reference/tsserver/reloadProjects/inferred-project.js
+++ b/tests/baselines/reference/tsserver/reloadProjects/inferred-project.js
@@ -97,6 +97,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -132,12 +134,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -183,6 +189,8 @@ Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts ::
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -198,6 +206,10 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferred
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"]} WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -245,16 +257,28 @@ After request
 PolledWatches::
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -311,6 +335,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -324,6 +352,10 @@ Info seq  [hh:mm:ss:mss] 	FileName: /user/username/projects/myproject/file1.ts P
 Info seq  [hh:mm:ss:mss] 		Projects: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -371,14 +403,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -432,6 +480,10 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Search path: /user/username/projects/myproject
 Info seq  [hh:mm:ss:mss] For info: /user/username/projects/myproject/file1.ts :: No config files found.
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -449,6 +501,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module1/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeFiles":["/user/username/projects/myproject/file2.ts"],"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -495,14 +551,30 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/jsconfig.json:
   {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000} *new*
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000} *new*
 /user/username/projects/myproject/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500} *new*
+/user/username/projects/package.json:
+  {"pollingInterval":2000} *new*
 
 PolledWatches *deleted*::
+/user/username/projects/myproject/node_modules/module1/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/rename/with-symlinks-and-case-difference.js b/tests/baselines/reference/tsserver/rename/with-symlinks-and-case-difference.js
index f383b27085020..77b3c764587fd 100644
--- a/tests/baselines/reference/tsserver/rename/with-symlinks-and-case-difference.js
+++ b/tests/baselines/reference/tsserver/rename/with-symlinks-and-case-difference.js
@@ -104,6 +104,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/proj
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/project1 1 undefined Config: c:/temp/test/project1/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: c:/temp/test/project1/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/test/project1/package.json 2000 undefined Project: c:/temp/test/project1/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/project1/node_modules/@types 1 undefined Project: c:/temp/test/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/project1/node_modules/@types 1 undefined Project: c:/temp/test/project1/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/node_modules/@types 1 undefined Project: c:/temp/test/project1/tsconfig.json WatchType: Type roots
@@ -221,7 +222,7 @@ c:/temp/test/project1/node_modules/@types: *new*
 FsWatches::
 C:/a/lib/lib.d.ts: *new*
   {}
-c:/temp/test/project1/package.json: *new*
+C:/temp/test/project1/package.json: *new*
   {}
 c:/temp/test/project1/tsconfig.json: *new*
   {}
@@ -399,6 +400,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/node_modules 1 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/node_modules 1 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/test/project1/package.json 2000 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/test/project2/package.json 2000 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/test/package.json 2000 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/package.json 2000 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/project2/node_modules/@types 1 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/project2/node_modules/@types 1 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/test/node_modules/@types 1 undefined Project: c:/temp/test/project2/tsconfig.json WatchType: Type roots
@@ -558,6 +562,12 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+C:/temp/package.json: *new*
+  {"pollingInterval":2000}
+C:/temp/test/package.json: *new*
+  {"pollingInterval":2000}
+C:/temp/test/project2/package.json: *new*
+  {"pollingInterval":2000}
 c:/temp/node_modules/@types:
   {"pollingInterval":500}
 c:/temp/test/node_modules/@types:
@@ -574,7 +584,7 @@ c:/temp/test/project2/node_modules/@types: *new*
 FsWatches::
 C:/a/lib/lib.d.ts:
   {}
-c:/temp/test/project1/package.json:
+C:/temp/test/project1/package.json:
   {}
 c:/temp/test/project1/tsconfig.json:
   {}
diff --git a/tests/baselines/reference/tsserver/resolutionCache/avoid-unnecessary-lookup-invalidation-on-save.js b/tests/baselines/reference/tsserver/resolutionCache/avoid-unnecessary-lookup-invalidation-on-save.js
index d1b8085ee8531..52cc3da7d0ee5 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/avoid-unnecessary-lookup-invalidation-on-save.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/avoid-unnecessary-lookup-invalidation-on-save.js
@@ -66,6 +66,12 @@ Info seq  [hh:mm:ss:mss] Config: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 1 undefined Config: /user/username/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 1 undefined Config: /user/username/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/src/file1.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'module1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -92,15 +98,40 @@ Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/mo
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/index.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/user/username/projects/myproject/node_modules/module2/index.ts', result '/user/username/projects/myproject/node_modules/module2/index.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/module1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -203,8 +234,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/can-load-typings-that-are-proper-modules.js b/tests/baselines/reference/tsserver/resolutionCache/can-load-typings-that-are-proper-modules.js
index facf91fb99468..0507b790c194c 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/can-load-typings-that-are-proper-modules.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/can-load-typings-that-are-proper-modules.js
@@ -41,6 +41,9 @@ Info seq  [hh:mm:ss:mss] request:
 Info seq  [hh:mm:ss:mss] Search path: /a/b
 Info seq  [hh:mm:ss:mss] For info: /a/b/app.js :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] File '/a/b/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'lib' from '/a/b/app.js'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'lib' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -59,6 +62,17 @@ Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/lib.d.ts' does not exist.
 Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/@types/lib/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/@types/lib.d.ts' does not exist.
 Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/@types/lib/index.d.ts' exists - use it as a name resolution result.
+Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/@types/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/@types/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/cache/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/cache/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/lib/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
@@ -76,6 +90,12 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 TI:: Creating typing installer
 
 PolledWatches::
+/a/cache/node_modules/@types/lib/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/package.json: *new*
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
 
@@ -222,6 +242,12 @@ PolledWatches::
   {"pollingInterval":500}
 /a/b/node_modules: *new*
   {"pollingInterval":500}
+/a/cache/node_modules/@types/lib/package.json:
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/a/cache/node_modules/package.json:
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
 
diff --git a/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-different-folders.js b/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-different-folders.js
index bad451670f9bc..bfdb021c7268a 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-different-folders.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-different-folders.js
@@ -81,6 +81,13 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/file4.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/file3.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/src/file1.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'module1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -109,10 +116,33 @@ Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/mo
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/index.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/user/username/projects/myproject/node_modules/module2/index.ts', result '/user/username/projects/myproject/node_modules/module2/index.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/src/feature/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'module1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -127,6 +157,13 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/user/username/projects/myproject/product/src/feature/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/product/src'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/test/file4.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'module1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -141,6 +178,14 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/user/username/projects/myproject/product/test/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/product'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/test/src/file3.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'module1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -155,11 +200,25 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/user/username/projects/myproject/product/test/src/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/product/test'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules/module1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/feature/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -277,8 +336,30 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/src/feature/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/test/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/test/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -407,14 +488,110 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/src/feature/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/src/feature/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/test/file4.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/test/file4.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/test/src/file3.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/test/src/file3.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (7)
diff --git a/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-same-folder.js b/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-same-folder.js
index 774f7f4621769..e601207f4a923 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-same-folder.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-files-in-same-folder.js
@@ -71,6 +71,12 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 1 undefined Config: /user/username/projects/myproject/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/file2.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/src/file1.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'module1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -97,21 +103,52 @@ Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/mo
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/index.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/user/username/projects/myproject/node_modules/module2/index.ts', result '/user/username/projects/myproject/node_modules/module2/index.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/src/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Resolution for module 'module1' was found in cache from location '/user/username/projects/myproject/src'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module1' was successfully resolved to '/user/username/projects/myproject/src/node_modules/module1/index.ts'. ========
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module2' from '/user/username/projects/myproject/src/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/src'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/module1/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module2/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -219,8 +256,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -313,10 +364,70 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/src/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/src/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/src/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/src/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
diff --git a/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-inferred-project.js b/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-inferred-project.js
index d1dad25b9ed1b..a49c1d525743d 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-inferred-project.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/non-relative-module-name-from-inferred-project.js
@@ -71,6 +71,13 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module './feature/file2' from '/user/username/projects/myproject/product/src/file1.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/src/feature/file2', target file types: TypeScript, Declaration.
@@ -114,6 +121,14 @@ Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/mo
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/index.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/user/username/projects/myproject/node_modules/module2/index.ts', result '/user/username/projects/myproject/node_modules/module2/index.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/feature/file2.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/src/feature/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
@@ -129,10 +144,32 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/user/username/projects/myproject/product/src/feature/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/product/src'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/file4.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/test/file4.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
@@ -148,6 +185,14 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/user/username/projects/myproject/product/test/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/product'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/file3.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'module1' from '/user/username/projects/myproject/product/test/src/file3.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
@@ -163,6 +208,9 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/user/username/projects/myproject/product/test/src/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'module2' was found in cache from location '/user/username/projects/myproject/product/test'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'module2' was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
@@ -176,6 +224,17 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules/module1/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/module2/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/feature/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -236,28 +295,50 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/module2/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/product/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/product/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/product/node_modules/module1/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/src/feature/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/product/src/jsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/product/src/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/product/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/product/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/product/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/product/test/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/product/test/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/product/test/src/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/product/test/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/product/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -382,17 +463,113 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module './feature/file2' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/src/feature/file2.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../test/file4' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/test/file4.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../test/src/file3' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/test/src/file3.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/src/feature/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/src/feature/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/module1/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/module2/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/node_modules/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/test/file4.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/test/file4.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module1' from '/user/username/projects/myproject/product/test/src/file3.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/node_modules/module1/index.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module 'module2' from '/user/username/projects/myproject/product/test/src/file3.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/node_modules/module2/index.ts'.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (7)
diff --git a/tests/baselines/reference/tsserver/resolutionCache/not-sharing-across-references.js b/tests/baselines/reference/tsserver/resolutionCache/not-sharing-across-references.js
index 7b17fe05b5042..15c52828ac7ef 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/not-sharing-across-references.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/not-sharing-across-references.js
@@ -104,6 +104,11 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/common/tsconfig.json :
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/common/tsconfig.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common 1 undefined Config: /users/username/projects/common/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common 1 undefined Config: /users/username/projects/common/tsconfig.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/app/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'moduleX' from '/users/username/projects/app/appA.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'moduleX' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -118,13 +123,29 @@ Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/ind
 Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/users/username/projects/node_modules/moduleX/index.d.ts', result '/users/username/projects/node_modules/moduleX/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'moduleX' was successfully resolved to '/users/username/projects/node_modules/moduleX/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/app/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '../common/moduleB' from '/users/username/projects/app/appB.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/users/username/projects/common/moduleB', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/users/username/projects/common/moduleB.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../common/moduleB' was successfully resolved to '/users/username/projects/common/moduleB.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/common/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/common/moduleB.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'moduleX' from '/users/username/projects/common/moduleB.ts'. ========
 Info seq  [hh:mm:ss:mss] Using compiler options of project reference redirect '/users/username/projects/common/tsconfig.json'.
@@ -141,12 +162,18 @@ Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/ind
 Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/users/username/projects/node_modules/moduleX/index.d.ts', result '/users/username/projects/node_modules/moduleX/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'moduleX' was successfully resolved to '/users/username/projects/node_modules/moduleX/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/app/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/app/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/moduleX/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/app/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/common/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/app/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/app/tsconfig.json' (Configured)
@@ -299,8 +326,18 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/app/node_modules: *new*
   {"pollingInterval":500}
+/users/username/projects/app/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/common/node_modules: *new*
   {"pollingInterval":500}
+/users/username/projects/common/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/node_modules/moduleX/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/app/appA.ts: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/npm-install-@types-works.js b/tests/baselines/reference/tsserver/resolutionCache/npm-install-@types-works.js
index 746b72b2e010a..ca36015d5f06c 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/npm-install-@types-works.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/npm-install-@types-works.js
@@ -40,6 +40,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/tem
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/temp/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -75,12 +77,16 @@ PolledWatches::
   {"pollingInterval":500}
 /a/b/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/package.json: *new*
+  {"pollingInterval":2000}
 /a/b/projects/temp/jsconfig.json: *new*
   {"pollingInterval":2000}
 /a/b/projects/temp/node_modules: *new*
   {"pollingInterval":500}
 /a/b/projects/temp/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/b/projects/temp/package.json: *new*
+  {"pollingInterval":2000}
 /a/b/projects/temp/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -240,8 +246,12 @@ PolledWatches::
   {"pollingInterval":500}
 /a/b/projects/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/temp/jsconfig.json:
   {"pollingInterval":2000}
+/a/b/projects/temp/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/temp/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -277,6 +287,9 @@ Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earli
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules/@types/pad/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/projects/temp/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /a/b/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -301,8 +314,18 @@ After running Timeout callback:: count: 1
 PolledWatches::
 /a/b/projects/node_modules/@types:
   {"pollingInterval":500}
+/a/b/projects/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/temp/jsconfig.json:
   {"pollingInterval":2000}
+/a/b/projects/temp/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/projects/temp/node_modules/@types/pad/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/projects/temp/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/projects/temp/package.json:
+  {"pollingInterval":2000}
 /a/b/projects/temp/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-different-folders.js b/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-different-folders.js
index 5796511fd15f7..5a895960c60bf 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-different-folders.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-different-folders.js
@@ -85,6 +85,19 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/file4.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/file3.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module './module1' from '/user/username/projects/myproject/product/src/file1.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/src/module1', target file types: TypeScript, Declaration.
@@ -95,6 +108,21 @@ Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/module2', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/module2.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../module2' was successfully resolved to '/user/username/projects/myproject/product/module2.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '../module1' from '/user/username/projects/myproject/product/src/feature/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/src/module1', target file types: TypeScript, Declaration.
@@ -105,6 +133,13 @@ Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/module2', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/module2.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../../module2' was successfully resolved to '/user/username/projects/myproject/product/module2.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '../src/module1}' from '/user/username/projects/myproject/product/test/file4.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/src/module1}', target file types: TypeScript, Declaration.
@@ -124,6 +159,14 @@ Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/module2', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/module2.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../module2' was successfully resolved to '/user/username/projects/myproject/product/module2.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '../../src/module1' from '/user/username/projects/myproject/product/test/src/file3.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/src/module1', target file types: TypeScript, Declaration.
@@ -134,7 +177,17 @@ Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/product/module2', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/module2.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../../module2' was successfully resolved to '/user/username/projects/myproject/product/module2.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/src/feature/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/product/test/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -253,8 +306,22 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/src/feature/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/test/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/product/test/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -383,14 +450,106 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module './module1' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/src/module1.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../module2' from '/user/username/projects/myproject/product/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/module2.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/feature/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../module1' from '/user/username/projects/myproject/product/src/feature/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/src/module1.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../../module2' from '/user/username/projects/myproject/product/src/feature/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/module2.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../src/module1}' from '/user/username/projects/myproject/product/test/file4.ts' of old program, it was not resolved.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../module2' from '/user/username/projects/myproject/product/test/file4.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/module2.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/test/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/product/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../../src/module1' from '/user/username/projects/myproject/product/test/src/file3.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/src/module1.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../../module2' from '/user/username/projects/myproject/product/test/src/file3.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/product/module2.ts'.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (7)
diff --git a/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-same-folder.js b/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-same-folder.js
index 2f8807d95dd91..c26db65923092 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-same-folder.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/relative-module-name-from-files-in-same-folder.js
@@ -75,6 +75,17 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/project
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/file2.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/module1.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module './module1' from '/user/username/projects/myproject/src/file1.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/src/module1', target file types: TypeScript, Declaration.
@@ -85,13 +96,31 @@ Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/user/username/projects/myproject/module2', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/module2.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../module2' was successfully resolved to '/user/username/projects/myproject/module2.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module './module1' from '/user/username/projects/myproject/src/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Resolution for module './module1' was found in cache from location '/user/username/projects/myproject/src'.
 Info seq  [hh:mm:ss:mss] ======== Module name './module1' was successfully resolved to '/user/username/projects/myproject/src/module1.ts'. ========
 Info seq  [hh:mm:ss:mss] ======== Resolving module '../module2' from '/user/username/projects/myproject/src/file2.ts'. ========
 Info seq  [hh:mm:ss:mss] Resolution for module '../module2' was found in cache from location '/user/username/projects/myproject/src'.
 Info seq  [hh:mm:ss:mss] ======== Module name '../module2' was successfully resolved to '/user/username/projects/myproject/module2.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -201,8 +230,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -293,10 +328,62 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /user/username/projects/myproject/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module './module1' from '/user/username/projects/myproject/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/src/module1.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../module2' from '/user/username/projects/myproject/src/file1.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/module2.ts'.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/myproject/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/user/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module './module1' from '/user/username/projects/myproject/src/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/src/module1.ts'.
 Info seq  [hh:mm:ss:mss] Reusing resolution of module '../module2' from '/user/username/projects/myproject/src/file2.ts' of old program, it was successfully resolved to '/user/username/projects/myproject/module2.ts'.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (5)
diff --git a/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-configured-projects.js b/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-configured-projects.js
index f20f0880fdec7..a511d7f99963a 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-configured-projects.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-configured-projects.js
@@ -47,6 +47,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 1 undefined Config: /users/username/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -191,8 +193,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/moduleFile.ts: *new*
@@ -335,10 +341,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/moduleFile: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project: *new*
@@ -517,8 +527,12 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/project/moduleFile:
diff --git a/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-inferred-projects.js b/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-inferred-projects.js
index 12bd949d23740..4e94f40ae9feb 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-inferred-projects.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/renaming-module-should-restore-the-states-for-inferred-projects.js
@@ -23,6 +23,8 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projec
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -59,10 +61,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/jsconfig.json: *new*
   {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -189,12 +195,16 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/jsconfig.json:
   {"pollingInterval":2000}
 /users/username/projects/project/moduleFile: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/tsconfig.json:
   {"pollingInterval":2000}
 
@@ -377,10 +387,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/jsconfig.json:
   {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/resolutionCache/sharing-across-references.js b/tests/baselines/reference/tsserver/resolutionCache/sharing-across-references.js
index 329eb98be339e..70531d74ae9c6 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/sharing-across-references.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/sharing-across-references.js
@@ -102,6 +102,11 @@ Info seq  [hh:mm:ss:mss] Config: /users/username/projects/common/tsconfig.json :
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/common/tsconfig.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Config file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common 1 undefined Config: /users/username/projects/common/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common 1 undefined Config: /users/username/projects/common/tsconfig.json WatchType: Wild card directory
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/app/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'moduleX' from '/users/username/projects/app/appA.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'moduleX' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -116,13 +121,29 @@ Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/ind
 Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/index.d.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/users/username/projects/node_modules/moduleX/index.d.ts', result '/users/username/projects/node_modules/moduleX/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'moduleX' was successfully resolved to '/users/username/projects/node_modules/moduleX/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/moduleX/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/node_modules/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/app/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module '../common/moduleB' from '/users/username/projects/app/appB.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module as file / folder, candidate module location '/users/username/projects/common/moduleB', target file types: TypeScript, Declaration.
 Info seq  [hh:mm:ss:mss] File '/users/username/projects/common/moduleB.ts' exists - use it as a name resolution result.
 Info seq  [hh:mm:ss:mss] ======== Module name '../common/moduleB' was successfully resolved to '/users/username/projects/common/moduleB.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/common/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/users/username/projects/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/username/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/users/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/common/moduleB.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'moduleX' from '/users/username/projects/common/moduleB.ts'. ========
 Info seq  [hh:mm:ss:mss] Using compiler options of project reference redirect '/users/username/projects/common/tsconfig.json'.
@@ -132,12 +153,18 @@ Info seq  [hh:mm:ss:mss] Searching all ancestor node_modules directories for pre
 Info seq  [hh:mm:ss:mss] Directory '/users/username/projects/common/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Resolution for module 'moduleX' was found in cache from location '/users/username/projects'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'moduleX' was successfully resolved to '/users/username/projects/node_modules/moduleX/index.d.ts'. ========
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/app/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/app/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/common/node_modules 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/moduleX/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/app/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/common/package.json 2000 undefined Project: /users/username/projects/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/app/node_modules/@types 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/app/node_modules/@types 1 undefined Project: /users/username/projects/app/tsconfig.json WatchType: Type roots
@@ -295,10 +322,20 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/app/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/app/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/common/node_modules: *new*
   {"pollingInterval":500}
+/users/username/projects/common/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/node_modules/moduleX/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/app/appA.ts: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/should-remove-the-module-not-found-error.js b/tests/baselines/reference/tsserver/resolutionCache/should-remove-the-module-not-found-error.js
index f127feefebd9b..61b350ef2a577 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/should-remove-the-module-not-found-error.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/should-remove-the-module-not-found-error.js
@@ -23,6 +23,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/moduleFile 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project 0 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -56,12 +58,16 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/jsconfig.json: *new*
   {"pollingInterval":2000}
 /users/username/projects/project/moduleFile: *new*
   {"pollingInterval":500}
 /users/username/projects/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/project/tsconfig.json: *new*
   {"pollingInterval":2000}
 
@@ -209,10 +215,14 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/jsconfig.json:
   {"pollingInterval":2000}
 /users/username/projects/project/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/project/tsconfig.json:
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/resolutionCache/when-resolution-fails.js b/tests/baselines/reference/tsserver/resolutionCache/when-resolution-fails.js
index 292cbd5d6df49..636112821dc0b 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/when-resolution-fails.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/when-resolution-fails.js
@@ -118,6 +118,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects 0 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 0 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 0 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/somefolder/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/typings 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/typings 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/src/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -226,12 +230,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/somefolder: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/somefolder/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/somefolder: *new*
   {"pollingInterval":500}
 /user/username/somefolder: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/when-resolves-to-ambient-module.js b/tests/baselines/reference/tsserver/resolutionCache/when-resolves-to-ambient-module.js
index 1d9df42601b7d..7e7fb1aff19f1 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/when-resolves-to-ambient-module.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/when-resolves-to-ambient-module.js
@@ -121,6 +121,10 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/typings 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/typings 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/somefolder/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/typings 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/typings 1 undefined Project: /user/username/projects/myproject/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/src/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -232,12 +236,20 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/somefolder: *new*
   {"pollingInterval":500}
 /user/username/projects/myproject/src/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/somefolder/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/somefolder: *new*
   {"pollingInterval":500}
 /user/username/somefolder: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-as-part-of-wild-card-directories-in-config-project.js b/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-as-part-of-wild-card-directories-in-config-project.js
index 139bb14d21c87..6ff7888abf83c 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-as-part-of-wild-card-directories-in-config-project.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-as-part-of-wild-card-directories-in-config-project.js
@@ -63,6 +63,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/somemodule/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -160,8 +164,16 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/somemodule/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-in-inferred-project-for-failed-lookup/closed-script-infos.js b/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-in-inferred-project-for-failed-lookup/closed-script-infos.js
index 7654fc719e728..4170dae3f89d4 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-in-inferred-project-for-failed-lookup/closed-script-infos.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/when-watching-node_modules-in-inferred-project-for-failed-lookup/closed-script-infos.js
@@ -40,6 +40,10 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/somemodule/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -78,10 +82,18 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/somemodule/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/resolutionCache/works-correctly-when-typings-are-added-or-removed.js b/tests/baselines/reference/tsserver/resolutionCache/works-correctly-when-typings-are-added-or-removed.js
index b7669f9d5ab69..f3258538130b2 100644
--- a/tests/baselines/reference/tsserver/resolutionCache/works-correctly-when-typings-are-added-or-removed.js
+++ b/tests/baselines/reference/tsserver/resolutionCache/works-correctly-when-typings-are-added-or-removed.js
@@ -54,6 +54,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types/lib1/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Type roots
@@ -197,6 +202,16 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types/lib1/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /users/username/projects/project/tsconfig.json: *new*
@@ -274,6 +289,11 @@ Info seq  [hh:mm:ss:mss] Running: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/project/node_modules/@types/lib1/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/project/node_modules/@types/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/project/node_modules/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/project/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -323,6 +343,18 @@ PolledWatches::
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
 
+PolledWatches *deleted*::
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types/lib1/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /users/username/projects/project/tsconfig.json:
   {}
@@ -388,6 +420,11 @@ Projects::
 
 Info seq  [hh:mm:ss:mss] Running: /users/username/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/project/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types/lib2/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/@types/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/node_modules/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/project/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/project/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/project/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -432,6 +469,36 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+/users/username/projects/node_modules:
+  {"pollingInterval":500}
+/users/username/projects/node_modules/@types:
+  {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types/lib2/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/project/package.json: *new*
+  {"pollingInterval":2000}
+
+FsWatches::
+/users/username/projects/project/tsconfig.json:
+  {}
+
+FsWatchesRecursive::
+/users/username/projects/project:
+  {}
+/users/username/projects/project/node_modules:
+  {}
+/users/username/projects/project/node_modules/@types:
+  {}
+
 Timeout callback:: count: 0
 14: /users/username/projects/project/tsconfig.jsonFailedLookupInvalidation *deleted*
 
diff --git a/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-compiles-from-sources.js b/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-compiles-from-sources.js
index 553c212be2de0..37eede53c103e 100644
--- a/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-compiles-from-sources.js
+++ b/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-compiles-from-sources.js
@@ -82,6 +82,13 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
@@ -184,22 +191,36 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -347,20 +368,34 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules:
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules:
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules:
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules:
@@ -404,6 +439,8 @@ Info seq  [hh:mm:ss:mss] Running: /users/username/projects/myproject/javascript/
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/recognizers-text.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
@@ -462,14 +499,32 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js b/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js
index cbbbf44aa338c..76fc869678437 100644
--- a/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js
+++ b/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js
@@ -86,6 +86,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
@@ -188,20 +195,34 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -371,6 +392,8 @@ Before running Timeout callback:: count: 2
 Info seq  [hh:mm:ss:mss] Running: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/recognizers-text.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@microsoft/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@microsoft/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
@@ -431,14 +454,32 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-recompiles-after-deleting-generated-folders.js b/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-recompiles-after-deleting-generated-folders.js
index 3e96561ad7b2f..e5aded41cdd67 100644
--- a/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-recompiles-after-deleting-generated-folders.js
+++ b/tests/baselines/reference/tsserver/symLinks/module-resolution-when-project-recompiles-after-deleting-generated-folders.js
@@ -80,6 +80,15 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
@@ -183,14 +192,32 @@ After request
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -357,6 +384,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -406,20 +435,40 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -602,6 +651,8 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@microsoft/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@microsoft/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
@@ -662,14 +713,32 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-compiles-from-sources.js b/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-compiles-from-sources.js
index d7d0add257e62..3bb11dd41c373 100644
--- a/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-compiles-from-sources.js
+++ b/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-compiles-from-sources.js
@@ -104,6 +104,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
@@ -210,22 +217,36 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -391,20 +412,34 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules:
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules:
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules:
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules:
@@ -453,6 +488,8 @@ Before running Timeout callback:: count: 2
 Info seq  [hh:mm:ss:mss] Running: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/recognizers-text.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
@@ -517,14 +554,32 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js b/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js
index 3a9580e49ee63..fa1396fbd86ff 100644
--- a/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js
+++ b/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-has-node_modules-setup-but-doesnt-have-modules-in-typings-folder-and-then-recompiles.js
@@ -107,6 +107,13 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
@@ -213,20 +220,34 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -409,6 +430,8 @@ Before running Timeout callback:: count: 2
 Info seq  [hh:mm:ss:mss] Running: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/recognizers-text.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
@@ -475,14 +498,32 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-recompiles-after-deleting-generated-folders.js b/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-recompiles-after-deleting-generated-folders.js
index 89890e10e7a58..f08753fa7b906 100644
--- a/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-recompiles-after-deleting-generated-folders.js
+++ b/tests/baselines/reference/tsserver/symLinks/module-resolution-with-path-mapping-when-project-recompiles-after-deleting-generated-folders.js
@@ -95,6 +95,15 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 un
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages 0 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages 0 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/node_modules/@types 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Type roots
@@ -202,14 +211,32 @@ After request
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -382,6 +409,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/myproject/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -431,20 +460,40 @@ PolledWatches::
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -640,6 +689,8 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json 2000 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-text 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /users/username/projects/myproject/javascript/packages/recognizers-date-time/src 1 undefined Project: /users/username/projects/myproject/javascript/packages/recognizers-date-time/tsconfig.json WatchType: Failed Lookup Locations
@@ -706,14 +757,32 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /users/username/projects/myproject/javascript/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/myproject/javascript/packages/recognizers-date-time/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/datetime/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-date-time/src/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/myproject/javascript/packages/recognizers-text/dist/types/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /users/username/projects/myproject/javascript/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-Linux.js b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-Linux.js
index e8aafd4623210..7a5173c8e268d 100644
--- a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-Linux.js
+++ b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-Linux.js
@@ -127,6 +127,8 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project/packages/package2/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -196,6 +198,9 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
@@ -210,6 +215,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
@@ -332,6 +339,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -535,6 +544,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -587,6 +598,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -609,7 +627,13 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -668,10 +692,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -859,10 +887,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package1/dist/index.d.ts: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -921,6 +953,13 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -989,8 +1028,12 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project/packages/package2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1058,10 +1101,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package1/dist:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -1118,6 +1165,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -1187,6 +1241,9 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 4 projectProgramVersion: 3 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project/packages/package2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1389,6 +1446,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package1/dist/index.d.ts:
@@ -1459,6 +1518,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -1513,6 +1574,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -1535,6 +1603,12 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 5 projectProgramVersion: 4 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -1593,10 +1667,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js
index c7de4b1c2b7bf..728e42cd6b934 100644
--- a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js
+++ b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built-Linux.js
@@ -137,6 +137,8 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project/packages/package2/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -159,7 +161,12 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
@@ -172,6 +179,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
@@ -291,10 +301,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -477,10 +491,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package1/dist/index.d.ts: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -539,6 +557,13 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -607,8 +632,12 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project/packages/package2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -679,10 +708,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package1/dist:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -739,6 +772,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -808,6 +848,9 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project/packages/package2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -1010,6 +1053,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/project/packages/package1/dist/index.d.ts:
@@ -1080,6 +1125,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -1134,6 +1181,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -1156,6 +1210,12 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 4 projectProgramVersion: 3 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -1214,10 +1274,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built.js b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built.js
index afafae1d543d0..6866f033226a2 100644
--- a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built.js
+++ b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked-package1-built.js
@@ -137,6 +137,8 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project/packages/package2/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -159,7 +161,12 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
@@ -172,6 +179,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/node_modules/package1 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
@@ -291,10 +301,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules: *new*
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -498,6 +512,13 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -567,8 +588,12 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project/packages/package2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -628,6 +653,12 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -857,6 +888,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -879,6 +917,12 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -937,10 +981,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked.js b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked.js
index e8b88d6196252..248ec228f8b48 100644
--- a/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked.js
+++ b/tests/baselines/reference/tsserver/symLinks/monorepo-style-sibling-packages-symlinked.js
@@ -127,6 +127,8 @@ Info seq  [hh:mm:ss:mss] Config: /home/src/projects/project/packages/package2/ts
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2 1 undefined Config: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package2/package.json'.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -196,6 +198,9 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.es2016.full.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
@@ -210,6 +215,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /ho
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/src/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package2/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/node_modules/@types 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Type roots
@@ -332,6 +339,8 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types: *new*
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts: *new*
@@ -540,6 +549,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -562,7 +578,13 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist.
+Info seq  [hh:mm:ss:mss] Found 'package.json' at '/home/src/projects/project/packages/package1/package.json'.
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/index.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -621,10 +643,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
@@ -837,6 +863,13 @@ ScriptInfos::
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -906,8 +939,12 @@ Info seq  [hh:mm:ss:mss] Directory '/home/src/node_modules' does not exist, skip
 Info seq  [hh:mm:ss:mss] Directory '/home/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] Directory '/node_modules' does not exist, skipping all lookups in it.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was not resolved. ========
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/home/src/projects/project/packages/package2/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -967,6 +1004,12 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/home/src/projects/project/packages/package1/dist/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.es2016.full.d.ts:
@@ -1196,6 +1239,13 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /home/src/projects/project/packages/package2/tsconfig.json
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/src/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package2/package.json' exists according to earlier cached lookups.
 Info seq  [hh:mm:ss:mss] ======== Resolving module 'package1' from '/home/src/projects/project/packages/package2/src/index.ts'. ========
 Info seq  [hh:mm:ss:mss] Module resolution kind is not specified, using 'Node10'.
 Info seq  [hh:mm:ss:mss] Loading module 'package1' from 'node_modules' folder, target file types: TypeScript, Declaration.
@@ -1218,6 +1268,12 @@ Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/node_modules/package1/
 Info seq  [hh:mm:ss:mss] 'package.json' does not have a 'peerDependencies' field.
 Info seq  [hh:mm:ss:mss] Resolving real path for '/home/src/projects/project/node_modules/package1/dist/index.d.ts', result '/home/src/projects/project/packages/package1/dist/index.d.ts'.
 Info seq  [hh:mm:ss:mss] ======== Module name 'package1' was successfully resolved to '/home/src/projects/project/packages/package1/dist/index.d.ts' with Package ID 'package1/dist/index.d.ts@1.0.0'. ========
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/dist/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/home/src/projects/project/packages/package1/package.json' exists according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/lib/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/a/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] File '/package.json' does not exist according to earlier cached lookups.
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /home/src/projects/project/packages/package1/dist/package.json 2000 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /home/src/projects/node_modules 1 undefined Project: /home/src/projects/project/packages/package2/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /home/src/projects/project/packages/package2/tsconfig.json projectStateVersion: 4 projectProgramVersion: 3 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
@@ -1276,10 +1332,14 @@ PolledWatches::
   {"pollingInterval":500}
 /home/src/projects/project/packages/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package1/dist/package.json: *new*
+  {"pollingInterval":2000}
 /home/src/projects/project/packages/package2/node_modules:
   {"pollingInterval":500}
 /home/src/projects/project/packages/package2/node_modules/@types:
   {"pollingInterval":500}
+/home/src/projects/project/packages/package2/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /home/src/projects/node_modules:
diff --git a/tests/baselines/reference/tsserver/symLinks/rename-in-common-file-renames-all-project.js b/tests/baselines/reference/tsserver/symLinks/rename-in-common-file-renames-all-project.js
index b74f3f6170a55..dbb72beeac5da 100644
--- a/tests/baselines/reference/tsserver/symLinks/rename-in-common-file-renames-all-project.js
+++ b/tests/baselines/reference/tsserver/symLinks/rename-in-common-file-renames-all-project.js
@@ -79,6 +79,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/a/c/fc.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/a/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/c/package.json 2000 undefined Project: /users/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/a/package.json 2000 undefined Project: /users/username/projects/a/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/a/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/a/node_modules/@types 1 undefined Project: /users/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/a/node_modules/@types 1 undefined Project: /users/username/projects/a/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/a/tsconfig.json WatchType: Type roots
@@ -179,8 +182,14 @@ After request
 PolledWatches::
 /users/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/c/package.json: *new*
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -253,6 +262,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/p
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/b 1 undefined Config: /users/username/projects/b/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/b/c/fc.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/username/projects/b/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/c/package.json 2000 undefined Project: /users/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/b/package.json 2000 undefined Project: /users/username/projects/b/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/username/projects/package.json 2000 undefined Project: /users/username/projects/b/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/b/node_modules/@types 1 undefined Project: /users/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/b/node_modules/@types 1 undefined Project: /users/username/projects/b/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/username/projects/node_modules/@types 1 undefined Project: /users/username/projects/b/tsconfig.json WatchType: Type roots
@@ -359,10 +371,18 @@ After request
 PolledWatches::
 /users/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/username/projects/b/package.json: *new*
+  {"pollingInterval":2000}
+/users/username/projects/c/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -452,10 +472,18 @@ After request
 PolledWatches::
 /users/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/b/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/b/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/c/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -542,10 +570,18 @@ After request
 PolledWatches::
 /users/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/b/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/b/package.json:
+  {"pollingInterval":2000}
+/users/username/projects/c/package.json:
+  {"pollingInterval":2000}
 /users/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/users/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/symLinks/when-not-symlink-but-differs-in-casing.js b/tests/baselines/reference/tsserver/symLinks/when-not-symlink-but-differs-in-casing.js
index 6795a9635d768..2e78137250870 100644
--- a/tests/baselines/reference/tsserver/symLinks/when-not-symlink-but-differs-in-casing.js
+++ b/tests/baselines/reference/tsserver/symLinks/when-not-symlink-but-differs-in-casing.js
@@ -61,6 +61,9 @@ Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/temp/replay/axios-s
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/temp/replay/tsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: c:/temp/replay/jsconfig.json 2000 undefined WatchType: Config file for the inferred project root
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/lib/core/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/lib/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -87,6 +90,7 @@ Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 depe
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/node_modules/follow-redirects/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -117,6 +121,10 @@ After request
 PolledWatches::
 C:/a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
+C:/temp/replay/axios-src/lib/core/package.json: *new*
+  {"pollingInterval":2000}
+C:/temp/replay/axios-src/lib/package.json: *new*
+  {"pollingInterval":2000}
 c:/temp/node_modules/@types: *new*
   {"pollingInterval":500}
 c:/temp/replay/axios-src/jsconfig.json: *new*
@@ -145,7 +153,9 @@ c:/temp/replay/tsconfig.json: *new*
   {"pollingInterval":2000}
 
 FsWatches::
-c:/temp/replay/axios-src/package.json: *new*
+C:/temp/replay/axios-src/node_modules/follow-redirects/package.json: *new*
+  {}
+C:/temp/replay/axios-src/package.json: *new*
   {}
 
 FsWatchesRecursive::
@@ -258,6 +268,9 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/node_modules 1 undefined Project: /dev/null/inferredProject2* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/node_modules/follow-redirects/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/lib/core/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/lib/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/package.json 2000 undefined Project: /dev/null/inferredProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject2* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject2* WatchType: Type roots
@@ -302,6 +315,12 @@ Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject1*' (AutoIm
 Info seq  [hh:mm:ss:mss] 	Files (1)
 
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/lib/core/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/lib/core/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/lib/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/lib/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: c:/temp/replay/axios-src/lib/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -313,6 +332,8 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: c:/
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: c:/temp/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: c:/temp/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/node_modules/follow-redirects/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: C:/temp/replay/axios-src/node_modules/follow-redirects/package.json 2000 undefined Project: /dev/null/autoImportProviderProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject2*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (4)
 
@@ -331,6 +352,10 @@ After request
 PolledWatches::
 C:/a/lib/lib.d.ts:
   {"pollingInterval":500}
+C:/temp/replay/axios-src/lib/core/package.json:
+  {"pollingInterval":2000}
+C:/temp/replay/axios-src/lib/package.json:
+  {"pollingInterval":2000}
 c:/temp/node_modules: *new*
   {"pollingInterval":500}
 c:/temp/node_modules/@types:
@@ -371,14 +396,14 @@ c:/temp/replay/tsconfig.json:
   {"pollingInterval":2000}
 
 FsWatches::
-C:/temp/replay/axios-src/node_modules/follow-redirects/package.json: *new*
+C:/temp/replay/axios-src/node_modules/follow-redirects/package.json:
+  {}
+C:/temp/replay/axios-src/package.json:
   {}
 c:/temp/replay/axios-src/lib/core: *new*
   {}
 c:/temp/replay/axios-src/lib/core/settle.js: *new*
   {}
-c:/temp/replay/axios-src/package.json:
-  {}
 
 FsWatchesRecursive::
 c:/temp/replay/axios-src/node_modules:
@@ -438,6 +463,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/ax
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/AxiosHeaders.js 1 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core 0 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core 0 undefined Project: /dev/null/inferredProject3* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/lib/core/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/lib/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/package.json 2000 undefined Project: /dev/null/inferredProject3* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject3* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: c:/temp/replay/axios-src/lib/core/node_modules/@types 1 undefined Project: /dev/null/inferredProject3* WatchType: Type roots
@@ -464,6 +492,7 @@ Info seq  [hh:mm:ss:mss] 	Files (2)
 Info seq  [hh:mm:ss:mss] -----------------------------------------------
 Info seq  [hh:mm:ss:mss] AutoImportProviderProject: found 1 root files in 1 dependencies in * ms
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/autoImportProviderProject2*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: C:/temp/replay/axios-src/node_modules/follow-redirects/package.json 2000 undefined Project: /dev/null/autoImportProviderProject2* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/autoImportProviderProject2* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/autoImportProviderProject2*' (AutoImportProvider)
 Info seq  [hh:mm:ss:mss] 	Files (1)
@@ -573,6 +602,10 @@ After request
 PolledWatches::
 C:/a/lib/lib.d.ts:
   {"pollingInterval":500}
+C:/temp/replay/axios-src/lib/core/package.json:
+  {"pollingInterval":2000}
+C:/temp/replay/axios-src/lib/package.json:
+  {"pollingInterval":2000}
 c:/temp/node_modules:
   {"pollingInterval":500}
 c:/temp/node_modules/@types:
@@ -615,14 +648,14 @@ c:/temp/replay/tsconfig.json:
 FsWatches::
 C:/temp/replay/axios-src/node_modules/follow-redirects/package.json:
   {}
+C:/temp/replay/axios-src/package.json:
+  {}
 c:/temp/replay/axios-src/lib/core:
   {}
 c:/temp/replay/axios-src/lib/core/AxiosHeaders.js: *new*
   {}
 c:/temp/replay/axios-src/lib/core/settle.js:
   {}
-c:/temp/replay/axios-src/package.json:
-  {}
 
 FsWatchesRecursive::
 c:/temp/replay/axios-src/node_modules:
@@ -720,6 +753,10 @@ After request
 PolledWatches::
 C:/a/lib/lib.d.ts:
   {"pollingInterval":500}
+C:/temp/replay/axios-src/lib/core/package.json:
+  {"pollingInterval":2000}
+C:/temp/replay/axios-src/lib/package.json:
+  {"pollingInterval":2000}
 c:/temp/node_modules:
   {"pollingInterval":500}
 c:/temp/node_modules/@types:
@@ -762,12 +799,12 @@ c:/temp/replay/tsconfig.json:
 FsWatches::
 C:/temp/replay/axios-src/node_modules/follow-redirects/package.json:
   {}
+C:/temp/replay/axios-src/package.json:
+  {}
 c:/temp/replay/axios-src/lib/core:
   {}
 c:/temp/replay/axios-src/lib/core/AxiosHeaders.js:
   {}
-c:/temp/replay/axios-src/package.json:
-  {}
 
 FsWatches *deleted*::
 c:/temp/replay/axios-src/lib/core/settle.js:
diff --git a/tests/baselines/reference/tsserver/symlinkCache/contains-symlinks-discovered-by-project-references-resolution-after-program-creation.js b/tests/baselines/reference/tsserver/symlinkCache/contains-symlinks-discovered-by-project-references-resolution-after-program-creation.js
index 84de33587e94d..12fcfe026b496 100644
--- a/tests/baselines/reference/tsserver/symlinkCache/contains-symlinks-discovered-by-project-references-resolution-after-program-creation.js
+++ b/tests/baselines/reference/tsserver/symlinkCache/contains-symlinks-discovered-by-project-references-resolution-after-program-creation.js
@@ -97,6 +97,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/app/dep
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/app/dep 1 undefined Project: /packages/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /packages/app/src 1 undefined Project: /packages/app/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /packages/app/src 1 undefined Project: /packages/app/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /packages/app/src/package.json 2000 undefined Project: /packages/app/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /packages/app/tsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /packages/app/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/packages/app/tsconfig.json' (Configured)
@@ -266,6 +267,8 @@ PolledWatches::
   {"pollingInterval":500}
 /packages/app/dep: *new*
   {"pollingInterval":500}
+/packages/app/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /packages/app/tsconfig.json: *new*
diff --git a/tests/baselines/reference/tsserver/syntaxOperations/file-is-removed-and-added-with-different-content.js b/tests/baselines/reference/tsserver/syntaxOperations/file-is-removed-and-added-with-different-content.js
index 195796440abfb..2217a3776e048 100644
--- a/tests/baselines/reference/tsserver/syntaxOperations/file-is-removed-and-added-with-different-content.js
+++ b/tests/baselines/reference/tsserver/syntaxOperations/file-is-removed-and-added-with-different-content.js
@@ -218,6 +218,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -270,10 +272,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -342,10 +348,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -555,6 +565,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Close:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -608,8 +620,12 @@ PolledWatches::
 PolledWatches *deleted*::
 /user/username/projects/myproject/node_modules:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -664,6 +680,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /user/username/projects/myproject/tsconfig.json projectStateVersion: 4 projectProgramVersion: 3 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/user/username/projects/myproject/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -716,10 +734,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -788,10 +810,14 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules:
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/tsserver/resolves-the-symlink-path.js b/tests/baselines/reference/tsserver/tsserver/resolves-the-symlink-path.js
index 00c47547394cd..ff13cdcaa8d15 100644
--- a/tests/baselines/reference/tsserver/tsserver/resolves-the-symlink-path.js
+++ b/tests/baselines/reference/tsserver/tsserver/resolves-the-symlink-path.js
@@ -80,6 +80,9 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/user/proje
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src 1 undefined Config: /users/user/projects/myproject/src/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /users/user/projects/myproject/src/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/package.json 2000 undefined Project: /users/user/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/user/projects/myproject/package.json 2000 undefined Project: /users/user/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /users/user/projects/package.json 2000 undefined Project: /users/user/projects/myproject/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/node_modules/@types 1 undefined Project: /users/user/projects/myproject/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/src/node_modules/@types 1 undefined Project: /users/user/projects/myproject/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /users/user/projects/myproject/node_modules/@types 1 undefined Project: /users/user/projects/myproject/src/tsconfig.json WatchType: Type roots
@@ -181,10 +184,16 @@ After request
 PolledWatches::
 /users/user/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/user/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /users/user/projects/myproject/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/user/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /users/user/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/users/user/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/typeAquisition/prefer-typings-in-second-pass.js b/tests/baselines/reference/tsserver/typeAquisition/prefer-typings-in-second-pass.js
index 2d3fe263ac8ab..bfc8a2f30868e 100644
--- a/tests/baselines/reference/tsserver/typeAquisition/prefer-typings-in-second-pass.js
+++ b/tests/baselines/reference/tsserver/typeAquisition/prefer-typings-in-second-pass.js
@@ -60,6 +60,9 @@ Info seq  [hh:mm:ss:mss] Config: /a/b/jsconfig.json : {
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b 1 undefined Config: /a/b/jsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b 1 undefined Config: /a/b/jsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/b/jsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/typings/node_modules/@types/bar/package.json 2000 undefined Project: /a/b/jsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/typings/node_modules/@types/package.json 2000 undefined Project: /a/b/jsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/typings/node_modules/package.json 2000 undefined Project: /a/b/jsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /a/b/jsconfig.json WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/b/jsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/a/b/jsconfig.json' (Configured)
@@ -79,6 +82,12 @@ TI:: Creating typing installer
 PolledWatches::
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
+/a/typings/node_modules/@types/bar/package.json: *new*
+  {"pollingInterval":2000}
+/a/typings/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/typings/node_modules/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/jsconfig.json: *new*
@@ -352,6 +361,12 @@ PolledWatches::
   {"pollingInterval":500}
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
+/a/typings/node_modules/@types/bar/package.json:
+  {"pollingInterval":2000}
+/a/typings/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/a/typings/node_modules/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/b/jsconfig.json:
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/install-typings-for-unresolved-imports.js b/tests/baselines/reference/tsserver/typingsInstaller/install-typings-for-unresolved-imports.js
index 400bed129194a..5cd2c355feb45 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/install-typings-for-unresolved-imports.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/install-typings-for-unresolved-imports.js
@@ -328,6 +328,11 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/node/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/commander/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/ember__component/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (4)
@@ -440,6 +445,24 @@ Info seq  [hh:mm:ss:mss] event:
 TI:: [hh:mm:ss:mss] No new typings were requested as a result of typings discovery
 After running Timeout callback:: count: 2
 
+PolledWatches::
+/a/b/bower_components:
+  {"pollingInterval":500}
+/a/b/node_modules:
+  {"pollingInterval":500}
+/a/cache/node_modules/@types/commander/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/ember__component/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/node/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 3: /dev/null/inferredProject1* *new*
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions-with-trimmed-names.js b/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions-with-trimmed-names.js
index 47d920c08d41a..4ffb4a9c5046a 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions-with-trimmed-names.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions-with-trimmed-names.js
@@ -26,6 +26,8 @@ Info seq  [hh:mm:ss:mss] For info: /a/b/app.js :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/fooo/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
@@ -43,6 +45,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 TI:: Creating typing installer
 
 PolledWatches::
+/a/b/node_modules/fooo/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
 
@@ -187,6 +193,10 @@ After request
 PolledWatches::
 /a/b/bower_components: *new*
   {"pollingInterval":500}
+/a/b/node_modules/fooo/package.json:
+  {"pollingInterval":2000}
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
 
@@ -330,6 +340,8 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tmp/node_modules/foo/a/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tmp/node_modules/foo/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (6)
@@ -447,6 +459,24 @@ Info seq  [hh:mm:ss:mss] event:
 TI:: [hh:mm:ss:mss] No new typings were requested as a result of typings discovery
 After running Timeout callback:: count: 2
 
+PolledWatches::
+/a/b/bower_components:
+  {"pollingInterval":500}
+/a/b/node_modules/fooo/package.json:
+  {"pollingInterval":2000}
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+/tmp/node_modules/foo/a/package.json: *new*
+  {"pollingInterval":2000}
+/tmp/node_modules/foo/package.json: *new*
+  {"pollingInterval":2000}
+
+FsWatchesRecursive::
+/a/b/node_modules:
+  {}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 3: /dev/null/inferredProject1* *new*
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions.js b/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions.js
index 40d3d5a1f7c27..8f22fbf89c6e1 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/invalidate-the-resolutions.js
@@ -22,6 +22,8 @@ Info seq  [hh:mm:ss:mss] For info: /a/b/app.js :: No config files found.
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/b/node_modules 1 undefined WatchType: node_modules for closed script infos and package.jsons affecting module specifier cache
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/fooo/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/b/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
@@ -39,6 +41,10 @@ Info seq  [hh:mm:ss:mss] -----------------------------------------------
 TI:: Creating typing installer
 
 PolledWatches::
+/a/b/node_modules/fooo/package.json: *new*
+  {"pollingInterval":2000}
+/a/b/node_modules/package.json: *new*
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts: *new*
   {"pollingInterval":500}
 
@@ -183,6 +189,10 @@ After request
 PolledWatches::
 /a/b/bower_components: *new*
   {"pollingInterval":500}
+/a/b/node_modules/fooo/package.json:
+  {"pollingInterval":2000}
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
 /a/lib/lib.d.ts:
   {"pollingInterval":500}
 
@@ -317,6 +327,7 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /tmp/node_modules/foo/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -426,6 +437,22 @@ Info seq  [hh:mm:ss:mss] event:
 TI:: [hh:mm:ss:mss] No new typings were requested as a result of typings discovery
 After running Timeout callback:: count: 2
 
+PolledWatches::
+/a/b/bower_components:
+  {"pollingInterval":500}
+/a/b/node_modules/fooo/package.json:
+  {"pollingInterval":2000}
+/a/b/node_modules/package.json:
+  {"pollingInterval":2000}
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+/tmp/node_modules/foo/package.json: *new*
+  {"pollingInterval":2000}
+
+FsWatchesRecursive::
+/a/b/node_modules:
+  {}
+
 Timeout callback:: count: 2
 2: *ensureProjectForOpenFiles* *deleted*
 3: /dev/null/inferredProject1* *new*
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/malformed-packagejson.js b/tests/baselines/reference/tsserver/typingsInstaller/malformed-packagejson.js
index 7837fc8f7fc11..e7ae11fac743e 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/malformed-packagejson.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/malformed-packagejson.js
@@ -395,6 +395,9 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/commander/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -533,6 +536,24 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/a/b/bower_components:
+  {"pollingInterval":500}
+/a/b/node_modules:
+  {"pollingInterval":500}
+/a/cache/node_modules/@types/commander/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+
+FsWatches::
+/a/b/package.json:
+  {}
+
 Projects::
 /dev/null/inferredProject1* (Inferred) *changed*
     projectStateVersion: 2
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/progress-notification.js b/tests/baselines/reference/tsserver/typingsInstaller/progress-notification.js
index e6cc57f24ee93..23ba41d87edab 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/progress-notification.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/progress-notification.js
@@ -310,6 +310,9 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/commander/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -448,6 +451,24 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/a/bower_components:
+  {"pollingInterval":500}
+/a/cache/node_modules/@types/commander/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+/a/node_modules:
+  {"pollingInterval":500}
+
+FsWatches::
+/a/package.json:
+  {}
+
 Projects::
 /dev/null/inferredProject1* (Inferred) *changed*
     projectStateVersion: 2
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/redo-resolutions-pointing-to-js-on-typing-install.js b/tests/baselines/reference/tsserver/typingsInstaller/redo-resolutions-pointing-to-js-on-typing-install.js
index 0a058c251a1f3..3969a1b0a1b1b 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/redo-resolutions-pointing-to-js-on-typing-install.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/redo-resolutions-pointing-to-js-on-typing-install.js
@@ -33,6 +33,11 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/commander/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/b/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/a/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined Project: /dev/null/inferredProject1* WatchType: Missing file
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/b/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/b/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -64,6 +69,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/a/b/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/b/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/a/b/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/a/jsconfig.json: *new*
@@ -72,10 +79,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/a/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/a/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/a/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/node_modules/commander/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatchesRecursive::
 /user/username/projects/node_modules: *new*
@@ -224,6 +239,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/a/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/a/b/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/a/jsconfig.json:
@@ -232,10 +249,18 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/a/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/node_modules/commander/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatchesRecursive::
 /user/username/projects/node_modules:
@@ -364,6 +389,8 @@ Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/cache/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/a/cache/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/commander/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /user/username/projects/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -479,6 +506,8 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/a/b/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/a/b/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/a/b/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/a/jsconfig.json:
@@ -487,10 +516,20 @@ PolledWatches::
   {"pollingInterval":500}
 /user/username/projects/a/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/a/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/a/tsconfig.json:
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/user/username/projects/node_modules/commander/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/node_modules/package.json:
+  {"pollingInterval":2000}
 
 FsWatchesRecursive::
 /user/username/projects/a/cache/node_modules: *new*
diff --git a/tests/baselines/reference/tsserver/typingsInstaller/telemetry-events.js b/tests/baselines/reference/tsserver/typingsInstaller/telemetry-events.js
index a431077faabf3..43cd020b63628 100644
--- a/tests/baselines/reference/tsserver/typingsInstaller/telemetry-events.js
+++ b/tests/baselines/reference/tsserver/typingsInstaller/telemetry-events.js
@@ -301,6 +301,9 @@ Before running Timeout callback:: count: 2
 
 Info seq  [hh:mm:ss:mss] Running: /dev/null/inferredProject1*
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /dev/null/inferredProject1*
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/commander/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/@types/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/cache/node_modules/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /dev/null/inferredProject1* projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/dev/null/inferredProject1*' (Inferred)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -439,6 +442,24 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 0
 
+PolledWatches::
+/a/bower_components:
+  {"pollingInterval":500}
+/a/cache/node_modules/@types/commander/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/a/cache/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/a/lib/lib.d.ts:
+  {"pollingInterval":500}
+/a/node_modules:
+  {"pollingInterval":500}
+
+FsWatches::
+/a/package.json:
+  {}
+
 Projects::
 /dev/null/inferredProject1* (Inferred) *changed*
     projectStateVersion: 2
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-errors.js b/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-errors.js
index 881f6cc85ada1..fcbcb5243c596 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-errors.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-errors.js
@@ -58,6 +58,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":[]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
@@ -136,8 +141,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -202,8 +217,18 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/bar/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-in-host-configuration.js b/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-in-host-configuration.js
index baaac8bff1501..81d1539aab128 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-in-host-configuration.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options-in-host-configuration.js
@@ -86,6 +86,11 @@ Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/proj
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"excludeDirectories":["node_modules"]} WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
@@ -161,8 +166,18 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -223,8 +238,18 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options.js b/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options.js
index 82206f0f53aa0..a933e9eaccc34 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/external-project-watch-options.js
@@ -57,6 +57,11 @@ Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/proj
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/project.csproj WatchType: Type roots
@@ -132,8 +137,18 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -196,8 +211,18 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json:
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json:
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types:
   {"pollingInterval":500}
+/user/username/projects/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-errors.js b/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-errors.js
index e6f5a3a2c4c06..fc7785f797170 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-errors.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-errors.js
@@ -71,6 +71,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /us
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":[]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -112,14 +117,24 @@ PolledWatches::
   {"pollingInterval":2000}
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-in-host-configuration.js b/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-in-host-configuration.js
index 51920355326fa..8ab0b7a0ec210 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-in-host-configuration.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options-in-host-configuration.js
@@ -99,6 +99,11 @@ Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/proj
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"excludeDirectories":["node_modules"]} WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -137,14 +142,24 @@ After request
 PolledWatches::
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options.js b/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options.js
index 09d005d305a35..75d2d7b426d7c 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/inferred-project-watch-options.js
@@ -70,6 +70,11 @@ Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/proj
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -108,14 +113,24 @@ After request
 PolledWatches::
 /user/username/projects/myproject/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/jsconfig.json: *new*
   {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/src/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/perVolumeCasing-and-new-file-addition.js b/tests/baselines/reference/tsserver/watchEnvironment/perVolumeCasing-and-new-file-addition.js
index b0ed962899ee6..a8d1e5aba34b2 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/perVolumeCasing-and-new-file-addition.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/perVolumeCasing-and-new-file-addition.js
@@ -62,6 +62,7 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Volumes/git/proj
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Volumes/git/projects/project 1 undefined Config: /Volumes/git/projects/project/tsconfig.json WatchType: Wild card directory
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /Volumes/git/projects/project/tsconfig.json
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /Volumes/git/projects/project/package.json 2000 undefined Project: /Volumes/git/projects/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Volumes/git/projects/project/node_modules/@types 1 undefined Project: /Volumes/git/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /Volumes/git/projects/project/node_modules/@types 1 undefined Project: /Volumes/git/projects/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /Volumes/git/projects/node_modules/@types 1 undefined Project: /Volumes/git/projects/project/tsconfig.json WatchType: Type roots
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names-with-i.js b/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names-with-i.js
index 2487f28955c27..227798f8d56af 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names-with-i.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names-with-i.js
@@ -38,6 +38,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/i/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /User/userName/Projects/i/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /User/userName/Projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/i/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/i/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -75,12 +77,16 @@ PolledWatches::
   {"pollingInterval":500}
 /User/userName/Projects/i/node_modules/@types: *new*
   {"pollingInterval":500}
+/User/userName/Projects/i/package.json: *new*
+  {"pollingInterval":2000}
 /User/userName/Projects/i/tsconfig.json: *new*
   {"pollingInterval":2000}
 /User/userName/Projects/node_modules: *new*
   {"pollingInterval":500}
 /User/userName/Projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/User/userName/Projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names.js b/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names.js
index f636fcf04e406..05c4d41309fef 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/project-with-ascii-file-names.js
@@ -38,6 +38,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/I/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /User/userName/Projects/I/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /User/userName/Projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/I/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/I/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -75,12 +77,16 @@ PolledWatches::
   {"pollingInterval":500}
 /User/userName/Projects/I/node_modules/@types: *new*
   {"pollingInterval":500}
+/User/userName/Projects/I/package.json: *new*
+  {"pollingInterval":2000}
 /User/userName/Projects/I/tsconfig.json: *new*
   {"pollingInterval":2000}
 /User/userName/Projects/node_modules: *new*
   {"pollingInterval":500}
 /User/userName/Projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/User/userName/Projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/project-with-unicode-file-names.js b/tests/baselines/reference/tsserver/watchEnvironment/project-with-unicode-file-names.js
index 0594fc8c86fbd..5b71fe62fd8fa 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/project-with-unicode-file-names.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/project-with-unicode-file-names.js
@@ -38,6 +38,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/İ/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules 1 undefined Project: /dev/null/inferredProject1* WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /User/userName/Projects/İ/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /User/userName/Projects/package.json 2000 undefined Project: /dev/null/inferredProject1* WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/İ/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/İ/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /User/userName/Projects/node_modules/@types 1 undefined Project: /dev/null/inferredProject1* WatchType: Type roots
@@ -73,12 +75,16 @@ PolledWatches::
   {"pollingInterval":500}
 /User/userName/Projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/User/userName/Projects/package.json: *new*
+  {"pollingInterval":2000}
 /User/userName/Projects/İ/jsconfig.json: *new*
   {"pollingInterval":2000}
 /User/userName/Projects/İ/node_modules: *new*
   {"pollingInterval":500}
 /User/userName/Projects/İ/node_modules/@types: *new*
   {"pollingInterval":500}
+/User/userName/Projects/İ/package.json: *new*
+  {"pollingInterval":2000}
 /User/userName/Projects/İ/tsconfig.json: *new*
   {"pollingInterval":2000}
 
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/recursive-directory-does-not-watch-files-starting-with-dot-in-node_modules.js b/tests/baselines/reference/tsserver/watchEnvironment/recursive-directory-does-not-watch-files-starting-with-dot-in-node_modules.js
index c61c9f69bbfa3..c1a0fa5cb015c 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/recursive-directory-does-not-watch-files-starting-with-dot-in-node_modules.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/recursive-directory-does-not-watch-files-starting-with-dot-in-node_modules.js
@@ -68,6 +68,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/proje
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 undefined Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules 1 undefined Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules 1 undefined Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/src/package.json 2000 undefined Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/package.json 2000 undefined Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 undefined Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 undefined Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/username/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -163,6 +165,10 @@ After request
 PolledWatches::
 /a/username/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/username/project/package.json: *new*
+  {"pollingInterval":2000}
+/a/username/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/uses-dynamic-polling-when-file-is-added-to-subfolder.js b/tests/baselines/reference/tsserver/watchEnvironment/uses-dynamic-polling-when-file-is-added-to-subfolder.js
index 3ddc9a9567b41..33ec132724129 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/uses-dynamic-polling-when-file-is-added-to-subfolder.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/uses-dynamic-polling-when-file-is-added-to-subfolder.js
@@ -72,6 +72,8 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/username/projec
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/src/package.json 2000 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/package.json 2000 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/username/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -165,6 +167,12 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/a/username/project/package.json: *new*
+  {"pollingInterval":2000}
+/a/username/project/src/package.json: *new*
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts: *new*
   {"inode":9}
@@ -316,6 +324,12 @@ Info seq  [hh:mm:ss:mss] response:
     }
 After request
 
+PolledWatches::
+/a/username/project/package.json:
+  {"pollingInterval":2000}
+/a/username/project/src/package.json:
+  {"pollingInterval":2000}
+
 FsWatches::
 /a/lib/lib.d.ts:
   {"inode":9}
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/uses-non-recursive-watchDirectory-when-file-is-added-to-subfolder.js b/tests/baselines/reference/tsserver/watchEnvironment/uses-non-recursive-watchDirectory-when-file-is-added-to-subfolder.js
index 91fc7788f6e44..bc90b20de8839 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/uses-non-recursive-watchDirectory-when-file-is-added-to-subfolder.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/uses-non-recursive-watchDirectory-when-file-is-added-to-subfolder.js
@@ -72,6 +72,8 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/username/projec
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/src/package.json 2000 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/package.json 2000 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/username/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -168,6 +170,10 @@ After request
 PolledWatches::
 /a/username/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/username/project/package.json: *new*
+  {"pollingInterval":2000}
+/a/username/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -315,6 +321,10 @@ After running Timeout callback:: count: 0
 PolledWatches::
 /a/username/project/node_modules/@types:
   {"pollingInterval":500}
+/a/username/project/package.json:
+  {"pollingInterval":2000}
+/a/username/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/uses-watchFile-when-file-is-added-to-subfolder.js b/tests/baselines/reference/tsserver/watchEnvironment/uses-watchFile-when-file-is-added-to-subfolder.js
index 7d6964a087fd6..47f33bb77619d 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/uses-watchFile-when-file-is-added-to-subfolder.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/uses-watchFile-when-file-is-added-to-subfolder.js
@@ -72,6 +72,8 @@ Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /a/username/projec
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/src 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/src/package.json 2000 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/username/project/package.json 2000 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /a/username/project/node_modules/@types 1 {"synchronousWatchDirectory":true} Project: /a/username/project/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /a/username/project/tsconfig.json projectStateVersion: 1 projectProgramVersion: 0 structureChanged: true structureIsReused:: Not Elapsed:: *ms
@@ -170,8 +172,12 @@ PolledWatches::
   {"pollingInterval":500}
 /a/username/project/node_modules/@types: *new*
   {"pollingInterval":500}
+/a/username/project/package.json: *new*
+  {"pollingInterval":2000}
 /a/username/project/src: *new*
   {"pollingInterval":500}
+/a/username/project/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -289,8 +295,12 @@ PolledWatches::
   {"pollingInterval":500}
 /a/username/project/node_modules/@types:
   {"pollingInterval":500}
+/a/username/project/package.json:
+  {"pollingInterval":2000}
 /a/username/project/src:
   {"pollingInterval":500}
+/a/username/project/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/watching-npm-install-in-codespaces-where-workspaces-folder-is-hosted-at-root.js b/tests/baselines/reference/tsserver/watchEnvironment/watching-npm-install-in-codespaces-where-workspaces-folder-is-hosted-at-root.js
index 397c63fe73bdd..44bbbd8f75754 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/watching-npm-install-in-codespaces-where-workspaces-folder-is-hosted-at-root.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/watching-npm-install-in-codespaces-where-workspaces-folder-is-hosted-at-root.js
@@ -66,6 +66,11 @@ Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /wo
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules 1 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules 1 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/@types/random-seed/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/@types/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/src/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /workspaces/somerepo/src/node_modules/@types 1 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /workspaces/somerepo/src/node_modules/@types 1 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/@types 1 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: Type roots
@@ -162,10 +167,20 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/workspaces/somerepo/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/@types/random-seed/package.json: *new*
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/workspaces/somerepo/package.json: *new*
+  {"pollingInterval":2000}
 /workspaces/somerepo/src/node_modules: *new*
   {"pollingInterval":500}
 /workspaces/somerepo/src/node_modules/@types: *new*
   {"pollingInterval":500}
+/workspaces/somerepo/src/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
@@ -320,10 +335,20 @@ PolledWatches::
   {"pollingInterval":500}
 /workspaces/somerepo/node_modules/@types: *new*
   {"pollingInterval":500}
+/workspaces/somerepo/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/@types/random-seed/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/package.json:
+  {"pollingInterval":2000}
 /workspaces/somerepo/src/node_modules:
   {"pollingInterval":500}
 /workspaces/somerepo/src/node_modules/@types:
   {"pollingInterval":500}
+/workspaces/somerepo/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
@@ -403,6 +428,9 @@ Before running Timeout callback:: count: 5
 
 Invoking Timeout callback:: timeoutId:: 18:: checkOne
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /workspaces/somerepo/src/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /workspaces/somerepo/node_modules/@types/random-seed/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /workspaces/somerepo/node_modules/@types/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Close:: WatchInfo: /workspaces/somerepo/node_modules/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /workspaces/somerepo/src/tsconfig.json projectStateVersion: 2 projectProgramVersion: 1 structureChanged: true structureIsReused:: Not Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/workspaces/somerepo/src/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (2)
@@ -428,6 +456,36 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 3
 
+PolledWatches::
+/workspaces/somerepo/node_modules:
+  {"pollingInterval":500}
+/workspaces/somerepo/node_modules/@types:
+  {"pollingInterval":500}
+/workspaces/somerepo/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/src/node_modules:
+  {"pollingInterval":500}
+/workspaces/somerepo/src/node_modules/@types:
+  {"pollingInterval":500}
+/workspaces/somerepo/src/package.json:
+  {"pollingInterval":2000}
+
+PolledWatches *deleted*::
+/workspaces/somerepo/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/@types/random-seed/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {"inode":12}
+/workspaces/somerepo/src:
+  {"inode":3}
+/workspaces/somerepo/src/tsconfig.json:
+  {"inode":4}
+
 Timeout callback:: count: 3
 17: /workspaces/somerepo/src/tsconfig.jsonFailedLookupInvalidation *deleted*
 13: /workspaces/somerepo/src/tsconfig.json
@@ -581,10 +639,14 @@ export function randomSeed(): string;
 
 
 PolledWatches::
+/workspaces/somerepo/package.json:
+  {"pollingInterval":2000}
 /workspaces/somerepo/src/node_modules:
   {"pollingInterval":500}
 /workspaces/somerepo/src/node_modules/@types:
   {"pollingInterval":500}
+/workspaces/somerepo/src/package.json:
+  {"pollingInterval":2000}
 
 PolledWatches *deleted*::
 /workspaces/somerepo/node_modules:
@@ -645,6 +707,9 @@ Before running Timeout callback:: count: 5
 Invoking Timeout callback:: timeoutId:: 34:: checkOne
 Info seq  [hh:mm:ss:mss] Scheduled: *ensureProjectForOpenFiles*, Cancelled earlier one
 Info seq  [hh:mm:ss:mss] Starting updateGraphWorker: Project: /workspaces/somerepo/src/tsconfig.json
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/@types/random-seed/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/@types/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /workspaces/somerepo/node_modules/package.json 2000 undefined Project: /workspaces/somerepo/src/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] Finishing updateGraphWorker: Project: /workspaces/somerepo/src/tsconfig.json projectStateVersion: 3 projectProgramVersion: 2 structureChanged: true structureIsReused:: SafeModules Elapsed:: *ms
 Info seq  [hh:mm:ss:mss] Project '/workspaces/somerepo/src/tsconfig.json' (Configured)
 Info seq  [hh:mm:ss:mss] 	Files (3)
@@ -674,6 +739,34 @@ Info seq  [hh:mm:ss:mss] event:
     }
 After running Timeout callback:: count: 3
 
+PolledWatches::
+/workspaces/somerepo/node_modules/@types/package.json: *new*
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/@types/random-seed/package.json: *new*
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/workspaces/somerepo/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/src/node_modules:
+  {"pollingInterval":500}
+/workspaces/somerepo/src/node_modules/@types:
+  {"pollingInterval":500}
+/workspaces/somerepo/src/package.json:
+  {"pollingInterval":2000}
+
+FsWatches::
+/a/lib/lib.d.ts:
+  {"inode":12}
+/workspaces/somerepo/node_modules:
+  {"inode":13}
+/workspaces/somerepo/node_modules/@types:
+  {"inode":14}
+/workspaces/somerepo/src:
+  {"inode":3}
+/workspaces/somerepo/src/tsconfig.json:
+  {"inode":4}
+
 Timeout callback:: count: 3
 26: *ensureProjectForOpenFiles* *deleted*
 27: /workspaces/somerepo/src/tsconfig.jsonFailedLookupInvalidation *deleted*
@@ -770,10 +863,20 @@ Info seq  [hh:mm:ss:mss] sysLog:: Elapsed:: *ms:: onTimerToUpdateChildWatches::
 After running Timeout callback:: count: 3
 
 PolledWatches::
+/workspaces/somerepo/node_modules/@types/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/@types/random-seed/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/node_modules/package.json:
+  {"pollingInterval":2000}
+/workspaces/somerepo/package.json:
+  {"pollingInterval":2000}
 /workspaces/somerepo/src/node_modules:
   {"pollingInterval":500}
 /workspaces/somerepo/src/node_modules/@types:
   {"pollingInterval":500}
+/workspaces/somerepo/src/package.json:
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts:
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/when-watchFile-is-single-watcher-per-file.js b/tests/baselines/reference/tsserver/watchEnvironment/when-watchFile-is-single-watcher-per-file.js
index edc8018322315..b32df9fcfbfd2 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/when-watchFile-is-single-watcher-per-file.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/when-watchFile-is-single-watcher-per-file.js
@@ -68,6 +68,8 @@ Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/pr
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject 0 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/tsconfig.json 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 undefined Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -170,10 +172,14 @@ After request
 PolledWatches::
 /user/username/projects/myproject/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/myproject/tsconfig.json: *new*
   {"pollingInterval":500}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configFile.js b/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configFile.js
index 610b6af89fbb4..4f6635ca19eec 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configFile.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configFile.js
@@ -83,6 +83,11 @@ Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/proj
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 undefined WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -180,8 +185,18 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configuration.js b/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configuration.js
index 14923f8fa5636..0f6ae526a3db3 100644
--- a/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configuration.js
+++ b/tests/baselines/reference/tsserver/watchEnvironment/with-excludeDirectories-option-in-configuration.js
@@ -112,6 +112,11 @@ Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/proj
 Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /a/lib/lib.d.ts 500 {"excludeDirectories":["node_modules"]} WatchType: Closed Script info
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Failed Lookup Locations
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/bar/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
+Info seq  [hh:mm:ss:mss] FileWatcher:: Added:: WatchInfo: /user/username/projects/myproject/src/package.json 2000 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: File location affecting resolution
 Info seq  [hh:mm:ss:mss] ExcludeWatcher:: Added:: WatchInfo: /user/username/projects/myproject/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
 Info seq  [hh:mm:ss:mss] Elapsed:: *ms DirectoryWatcher:: Added:: WatchInfo: /user/username/projects/node_modules/@types 1 {"excludeDirectories":["/user/username/projects/myproject/node_modules"]} Project: /user/username/projects/myproject/tsconfig.json WatchType: Type roots
@@ -209,8 +214,18 @@ Info seq  [hh:mm:ss:mss] response:
 After request
 
 PolledWatches::
+/user/username/projects/myproject/node_modules/bar/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/node_modules/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/package.json: *new*
+  {"pollingInterval":2000}
+/user/username/projects/myproject/src/package.json: *new*
+  {"pollingInterval":2000}
 /user/username/projects/node_modules/@types: *new*
   {"pollingInterval":500}
+/user/username/projects/package.json: *new*
+  {"pollingInterval":2000}
 
 FsWatches::
 /a/lib/lib.d.ts: *new*
diff --git a/tests/baselines/reference/typeReferenceDirectiveScopedPackageCustomTypeRoot.trace.json b/tests/baselines/reference/typeReferenceDirectiveScopedPackageCustomTypeRoot.trace.json
index 47435970cf8f0..af808d436429d 100644
--- a/tests/baselines/reference/typeReferenceDirectiveScopedPackageCustomTypeRoot.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectiveScopedPackageCustomTypeRoot.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive '@scoped/typescache', containing file '/__inferred type names__.ts', root directory '/types,/node_modules,/node_modules/@types'. ========",
     "Resolving with primary search path '/types, /node_modules, /node_modules/@types'.",
     "File '/types/@scoped/typescache.d.ts' does not exist.",
@@ -42,6 +43,20 @@
     "File '/node_modules/@types/mangled__attypescache/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/mangled__attypescache/index.d.ts', result '/node_modules/@types/mangled__attypescache/index.d.ts'.",
     "======== Type reference directive '@mangled/attypescache' was successfully resolved to '/node_modules/@types/mangled__attypescache/index.d.ts', primary: true. ========",
+    "File '/types/@scoped/typescache/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/@scoped/package.json' does not exist.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@scoped/nodemodulescache/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@scoped/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/mangled__attypescache/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +66,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -60,6 +77,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +87,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -77,6 +98,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +108,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,5 +118,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectiveWithFailedFromTypeRoot.trace.json b/tests/baselines/reference/typeReferenceDirectiveWithFailedFromTypeRoot.trace.json
index 759edd68fc5fb..1d4bc7cad02ef 100644
--- a/tests/baselines/reference/typeReferenceDirectiveWithFailedFromTypeRoot.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectiveWithFailedFromTypeRoot.trace.json
@@ -1,9 +1,12 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'phaser', containing file '/__inferred type names__.ts', root directory '/typings'. ========",
     "Resolving with primary search path '/typings'.",
     "File '/typings/phaser.d.ts' does not exist.",
     "Resolving type reference directive for program that specifies custom typeRoots, skipping lookup in 'node_modules' folder.",
     "======== Type reference directive 'phaser' was not resolved. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -13,6 +16,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -22,6 +27,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +38,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -40,6 +49,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +60,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,5 +70,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectiveWithTypeAsFile.trace.json b/tests/baselines/reference/typeReferenceDirectiveWithTypeAsFile.trace.json
index 85b39822233f6..ebf0a553c2275 100644
--- a/tests/baselines/reference/typeReferenceDirectiveWithTypeAsFile.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectiveWithTypeAsFile.trace.json
@@ -1,10 +1,17 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'phaser', containing file '/__inferred type names__.ts', root directory '/node_modules/phaser/types'. ========",
     "Resolving with primary search path '/node_modules/phaser/types'.",
     "File '/node_modules/phaser/types/phaser.d.ts' exists - use it as a name resolution result.",
     "File '/node_modules/phaser/package.json' does not exist.",
     "Resolving real path for '/node_modules/phaser/types/phaser.d.ts', result '/node_modules/phaser/types/phaser.d.ts'.",
     "======== Type reference directive 'phaser' was successfully resolved to '/node_modules/phaser/types/phaser.d.ts', primary: true. ========",
+    "File '/node_modules/phaser/types/package.json' does not exist.",
+    "File '/node_modules/phaser/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -14,6 +21,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -23,6 +32,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +43,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +54,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,6 +65,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,5 +75,7 @@
     "Scoped package detected, looking in 'typescript__lib-scripthost'",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives1.trace.json b/tests/baselines/reference/typeReferenceDirectives1.trace.json
index 3511def32e455..bdfff06bcf48d 100644
--- a/tests/baselines/reference/typeReferenceDirectives1.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives1.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,9 +7,14 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +25,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,5 +84,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives10.trace.json b/tests/baselines/reference/typeReferenceDirectives10.trace.json
index 207c83eb07ac2..28e78c976a70d 100644
--- a/tests/baselines/reference/typeReferenceDirectives10.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives10.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,6 +7,9 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './ref' from '/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/ref', target file types: TypeScript, Declaration.",
@@ -13,9 +17,12 @@
     "File '/ref.tsx' does not exist.",
     "File '/ref.d.ts' exists - use it as a name resolution result.",
     "======== Module name './ref' was successfully resolved to '/ref.d.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +33,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +45,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +57,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +69,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +81,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,5 +92,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives11.trace.json b/tests/baselines/reference/typeReferenceDirectives11.trace.json
index 8808f1f82d363..b67eaf630e750 100644
--- a/tests/baselines/reference/typeReferenceDirectives11.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives11.trace.json
@@ -1,9 +1,11 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './mod1' from '/mod2.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/mod1', target file types: TypeScript, Declaration.",
     "File '/mod1.ts' exists - use it as a name resolution result.",
     "======== Module name './mod1' was successfully resolved to '/mod1.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -11,6 +13,11 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -21,6 +28,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +40,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +76,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,5 +87,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives12.trace.json b/tests/baselines/reference/typeReferenceDirectives12.trace.json
index e5d424d1a27ea..f39d5640e8beb 100644
--- a/tests/baselines/reference/typeReferenceDirectives12.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives12.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './main' from '/mod2.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/main', target file types: TypeScript, Declaration.",
@@ -9,6 +10,8 @@
     "Loading module as file / folder, candidate module location '/mod1', target file types: TypeScript, Declaration.",
     "File '/mod1.ts' exists - use it as a name resolution result.",
     "======== Module name './mod1' was successfully resolved to '/mod1.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/mod1.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -16,12 +19,17 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './main' from '/mod1.ts'. ========",
     "Resolution for module './main' was found in cache from location '/'.",
     "======== Module name './main' was successfully resolved to '/main.ts'. ========",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +40,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +76,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +88,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +99,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives13.trace.json b/tests/baselines/reference/typeReferenceDirectives13.trace.json
index 207c83eb07ac2..28e78c976a70d 100644
--- a/tests/baselines/reference/typeReferenceDirectives13.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives13.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,6 +7,9 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './ref' from '/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/ref', target file types: TypeScript, Declaration.",
@@ -13,9 +17,12 @@
     "File '/ref.tsx' does not exist.",
     "File '/ref.d.ts' exists - use it as a name resolution result.",
     "======== Module name './ref' was successfully resolved to '/ref.d.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +33,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +45,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +57,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +69,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +81,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,5 +92,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives2.trace.json b/tests/baselines/reference/typeReferenceDirectives2.trace.json
index 816082ac3ff1a..dca01e4d88d57 100644
--- a/tests/baselines/reference/typeReferenceDirectives2.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives2.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,6 +7,11 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -16,6 +22,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +34,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +46,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +58,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +70,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -65,5 +81,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives3.trace.json b/tests/baselines/reference/typeReferenceDirectives3.trace.json
index 3511def32e455..faa17e79b2ff2 100644
--- a/tests/baselines/reference/typeReferenceDirectives3.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives3.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,9 +8,14 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +26,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +38,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +50,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +62,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +74,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,5 +85,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives4.trace.json b/tests/baselines/reference/typeReferenceDirectives4.trace.json
index 3511def32e455..faa17e79b2ff2 100644
--- a/tests/baselines/reference/typeReferenceDirectives4.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives4.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,9 +8,14 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +26,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +38,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +50,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +62,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +74,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,5 +85,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives5.trace.json b/tests/baselines/reference/typeReferenceDirectives5.trace.json
index 207c83eb07ac2..28e78c976a70d 100644
--- a/tests/baselines/reference/typeReferenceDirectives5.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives5.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,6 +7,9 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './ref' from '/app.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/ref', target file types: TypeScript, Declaration.",
@@ -13,9 +17,12 @@
     "File '/ref.tsx' does not exist.",
     "File '/ref.d.ts' exists - use it as a name resolution result.",
     "======== Module name './ref' was successfully resolved to '/ref.d.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +33,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -36,6 +45,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +57,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +69,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -66,6 +81,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,5 +92,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives6.trace.json b/tests/baselines/reference/typeReferenceDirectives6.trace.json
index 3511def32e455..faa17e79b2ff2 100644
--- a/tests/baselines/reference/typeReferenceDirectives6.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives6.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,9 +8,14 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +26,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +38,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +50,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +62,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +74,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,5 +85,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives7.trace.json b/tests/baselines/reference/typeReferenceDirectives7.trace.json
index 3511def32e455..bdfff06bcf48d 100644
--- a/tests/baselines/reference/typeReferenceDirectives7.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives7.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'lib', containing file '/app.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -6,9 +7,14 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -19,6 +25,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -29,6 +37,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -39,6 +49,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -49,6 +61,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +73,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,5 +84,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives8.trace.json b/tests/baselines/reference/typeReferenceDirectives8.trace.json
index 8808f1f82d363..b67eaf630e750 100644
--- a/tests/baselines/reference/typeReferenceDirectives8.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives8.trace.json
@@ -1,9 +1,11 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './mod1' from '/mod2.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/mod1', target file types: TypeScript, Declaration.",
     "File '/mod1.ts' exists - use it as a name resolution result.",
     "======== Module name './mod1' was successfully resolved to '/mod1.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -11,6 +13,11 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -21,6 +28,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +40,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -41,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -61,6 +76,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -70,5 +87,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeReferenceDirectives9.trace.json b/tests/baselines/reference/typeReferenceDirectives9.trace.json
index e5d424d1a27ea..f39d5640e8beb 100644
--- a/tests/baselines/reference/typeReferenceDirectives9.trace.json
+++ b/tests/baselines/reference/typeReferenceDirectives9.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module './main' from '/mod2.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/main', target file types: TypeScript, Declaration.",
@@ -9,6 +10,8 @@
     "Loading module as file / folder, candidate module location '/mod1', target file types: TypeScript, Declaration.",
     "File '/mod1.ts' exists - use it as a name resolution result.",
     "======== Module name './mod1' was successfully resolved to '/mod1.ts'. ========",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'lib', containing file '/mod1.ts', root directory '/types'. ========",
     "Resolving with primary search path '/types'.",
     "File '/types/lib.d.ts' does not exist.",
@@ -16,12 +19,17 @@
     "File '/types/lib/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/types/lib/index.d.ts', result '/types/lib/index.d.ts'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/types/lib/package.json' does not exist according to earlier cached lookups.",
+    "File '/types/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module './main' from '/mod1.ts'. ========",
     "Resolution for module './main' was found in cache from location '/'.",
     "======== Module name './main' was successfully resolved to '/main.ts'. ========",
     "======== Resolving type reference directive 'lib', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'lib' was found in cache from location '/'.",
     "======== Type reference directive 'lib' was successfully resolved to '/types/lib/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -32,6 +40,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +52,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -52,6 +64,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -62,6 +76,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +88,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,5 +99,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeRootsFromMultipleNodeModulesDirectories.trace.json b/tests/baselines/reference/typeRootsFromMultipleNodeModulesDirectories.trace.json
index f620afce87e93..81d7fa883b2b0 100644
--- a/tests/baselines/reference/typeRootsFromMultipleNodeModulesDirectories.trace.json
+++ b/tests/baselines/reference/typeRootsFromMultipleNodeModulesDirectories.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/foo/bar/package.json' does not exist.",
+    "File '/foo/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'xyz' from '/foo/bar/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'xyz' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -83,6 +86,22 @@
     "File '/node_modules/@types/dopey/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/dopey/index.d.ts', result '/node_modules/@types/dopey/index.d.ts'.",
     "======== Type reference directive 'dopey' was successfully resolved to '/node_modules/@types/dopey/index.d.ts', primary: true. ========",
+    "File '/foo/node_modules/@types/grumpy/package.json' does not exist according to earlier cached lookups.",
+    "File '/foo/node_modules/@types/package.json' does not exist.",
+    "File '/foo/node_modules/package.json' does not exist.",
+    "File '/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/foo/node_modules/@types/sneezy/package.json' does not exist according to earlier cached lookups.",
+    "File '/foo/node_modules/@types/package.json' does not exist according to earlier cached lookups.",
+    "File '/foo/node_modules/package.json' does not exist according to earlier cached lookups.",
+    "File '/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/dopey/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/foo/bar/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -97,6 +116,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/foo/bar/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/foo/bar/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -111,6 +132,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/foo/bar/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/foo/bar/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -123,6 +146,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/foo/bar/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/foo/bar/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -137,6 +162,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/foo/bar/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/foo/bar/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -149,6 +176,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/foo/bar/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/foo/bar/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -162,5 +191,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/foo/bar/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typeRootsFromNodeModulesInParentDirectory.trace.json b/tests/baselines/reference/typeRootsFromNodeModulesInParentDirectory.trace.json
index 5d97aa0870b61..da7f5b25d8fcd 100644
--- a/tests/baselines/reference/typeRootsFromNodeModulesInParentDirectory.trace.json
+++ b/tests/baselines/reference/typeRootsFromNodeModulesInParentDirectory.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'xyz' from '/src/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'xyz' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -21,6 +23,12 @@
     "File '/node_modules/@types/foo/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/foo/index.d.ts', result '/node_modules/@types/foo/index.d.ts'.",
     "======== Type reference directive 'foo' was successfully resolved to '/node_modules/@types/foo/index.d.ts', primary: true. ========",
+    "File '/node_modules/@types/foo/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +41,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +55,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -56,6 +68,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -68,6 +82,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +95,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -90,5 +108,7 @@
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/src/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersions.ambientModules.trace.json b/tests/baselines/reference/typesVersions.ambientModules.trace.json
index 14a89f279ff35..d1db5bcce72c1 100644
--- a/tests/baselines/reference/typesVersions.ambientModules.trace.json
+++ b/tests/baselines/reference/typesVersions.ambientModules.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'ext' from '/.src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'ext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +74,10 @@
     "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'ext/other' was not resolved. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +90,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +104,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +118,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -120,6 +132,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -132,6 +146,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -144,6 +160,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -156,6 +174,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -168,6 +188,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -180,6 +202,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -192,6 +216,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -204,6 +230,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -216,6 +244,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -228,6 +258,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -240,6 +272,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -252,6 +286,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -264,6 +300,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -276,6 +314,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -288,6 +328,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -300,6 +342,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -312,6 +356,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -324,6 +370,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -336,6 +384,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -348,6 +398,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -360,6 +412,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -372,6 +426,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -384,6 +440,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -396,6 +454,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -408,6 +468,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -420,6 +482,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -432,6 +496,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -444,6 +510,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -456,6 +524,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -468,6 +538,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -480,6 +552,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -492,6 +566,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -504,6 +580,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -516,6 +594,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -528,6 +608,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -540,6 +622,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -552,6 +636,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -564,6 +650,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -576,6 +664,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -588,6 +678,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -600,6 +692,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -612,6 +706,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -624,6 +720,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -636,6 +734,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -648,6 +748,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -660,6 +762,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -672,6 +776,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -684,6 +790,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -696,6 +804,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -708,6 +818,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -720,6 +832,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -732,6 +846,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -744,6 +860,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -756,6 +874,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -768,6 +888,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -780,6 +902,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -792,6 +916,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -804,6 +930,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -816,6 +944,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -828,6 +958,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -840,6 +972,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -852,6 +986,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -864,6 +1000,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -876,6 +1014,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -888,6 +1028,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -900,6 +1042,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -912,6 +1056,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -924,6 +1070,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -936,6 +1084,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -948,6 +1098,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -960,6 +1112,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -971,5 +1125,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersions.emptyTypes.trace.json b/tests/baselines/reference/typesVersions.emptyTypes.trace.json
index 85d505c87bd75..329da7de27ea8 100644
--- a/tests/baselines/reference/typesVersions.emptyTypes.trace.json
+++ b/tests/baselines/reference/typesVersions.emptyTypes.trace.json
@@ -1,4 +1,8 @@
 [
+    "File '/a/ts3.1/package.json' does not exist.",
+    "Found 'package.json' at '/a/package.json'.",
+    "File '/b/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'a' from '/b/user.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'a'.",
@@ -7,7 +11,7 @@
     "File '/a.ts' does not exist.",
     "File '/a.tsx' does not exist.",
     "File '/a.d.ts' does not exist.",
-    "Found 'package.json' at '/a/package.json'.",
+    "File '/a/package.json' exists according to earlier cached lookups.",
     "'package.json' has a 'typesVersions' field with version-specific path mappings.",
     "'package.json' does not have a 'typings' field.",
     "'package.json' had a falsy 'types' field.",
@@ -20,6 +24,8 @@
     "File '/a/ts3.1/index.tsx' does not exist.",
     "File '/a/ts3.1/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'a' was successfully resolved to '/a/ts3.1/index.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +39,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +54,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +69,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +84,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +99,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +114,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -111,6 +129,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -124,6 +144,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -137,6 +159,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -150,6 +174,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -163,6 +189,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -176,6 +204,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -189,6 +219,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -202,6 +234,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -215,6 +249,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -228,6 +264,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -241,6 +279,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -254,6 +294,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -267,6 +309,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -280,6 +324,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -293,6 +339,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -306,6 +354,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -319,6 +369,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -332,6 +384,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -345,6 +399,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -358,6 +414,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -371,6 +429,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -384,6 +444,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -397,6 +459,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -410,6 +474,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -423,6 +489,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -436,6 +504,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -449,6 +519,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -462,6 +534,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -475,6 +549,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -488,6 +564,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -501,6 +579,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -514,6 +594,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -527,6 +609,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -540,6 +624,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -553,6 +639,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -566,6 +654,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -579,6 +669,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -592,6 +684,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -605,6 +699,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -618,6 +714,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -631,6 +729,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -644,6 +744,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -657,6 +759,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -670,6 +774,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -683,6 +789,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -696,6 +804,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -709,6 +819,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -722,6 +834,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -735,6 +849,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -748,6 +864,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -761,6 +879,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -774,6 +894,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -787,6 +909,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -800,6 +924,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -813,6 +939,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -826,6 +954,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -839,6 +969,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -852,6 +984,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -865,6 +999,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -878,6 +1014,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -891,6 +1029,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -904,6 +1044,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -917,6 +1059,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -930,6 +1074,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -943,6 +1089,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -956,6 +1104,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -969,6 +1119,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -982,6 +1134,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -994,5 +1148,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersions.justIndex.trace.json b/tests/baselines/reference/typesVersions.justIndex.trace.json
index 6e30aa01116de..107cb19c7d5c9 100644
--- a/tests/baselines/reference/typesVersions.justIndex.trace.json
+++ b/tests/baselines/reference/typesVersions.justIndex.trace.json
@@ -1,4 +1,8 @@
 [
+    "File '/a/ts3.1/package.json' does not exist.",
+    "Found 'package.json' at '/a/package.json'.",
+    "File '/b/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'a' from '/b/user.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "'baseUrl' option is set to '/', using this value to resolve non-relative module name 'a'.",
@@ -7,7 +11,7 @@
     "File '/a.ts' does not exist.",
     "File '/a.tsx' does not exist.",
     "File '/a.d.ts' does not exist.",
-    "Found 'package.json' at '/a/package.json'.",
+    "File '/a/package.json' exists according to earlier cached lookups.",
     "'package.json' has a 'typesVersions' field with version-specific path mappings.",
     "'package.json' does not have a 'typings' field.",
     "'package.json' does not have a 'types' field.",
@@ -20,6 +24,8 @@
     "File '/a/ts3.1/index.tsx' does not exist.",
     "File '/a/ts3.1/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name 'a' was successfully resolved to '/a/ts3.1/index.d.ts'. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +39,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -46,6 +54,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,6 +69,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +84,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -85,6 +99,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -98,6 +114,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -111,6 +129,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -124,6 +144,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -137,6 +159,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -150,6 +174,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -163,6 +189,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -176,6 +204,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -189,6 +219,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -202,6 +234,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -215,6 +249,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -228,6 +264,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -241,6 +279,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -254,6 +294,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -267,6 +309,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -280,6 +324,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -293,6 +339,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -306,6 +354,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -319,6 +369,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -332,6 +384,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -345,6 +399,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -358,6 +414,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -371,6 +429,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -384,6 +444,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -397,6 +459,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -410,6 +474,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -423,6 +489,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -436,6 +504,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -449,6 +519,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -462,6 +534,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -475,6 +549,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -488,6 +564,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -501,6 +579,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -514,6 +594,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -527,6 +609,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -540,6 +624,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -553,6 +639,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -566,6 +654,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -579,6 +669,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -592,6 +684,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -605,6 +699,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -618,6 +714,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -631,6 +729,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -644,6 +744,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -657,6 +759,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -670,6 +774,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -683,6 +789,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -696,6 +804,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -709,6 +819,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -722,6 +834,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -735,6 +849,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -748,6 +864,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -761,6 +879,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -774,6 +894,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -787,6 +909,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -800,6 +924,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -813,6 +939,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -826,6 +954,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -839,6 +969,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -852,6 +984,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -865,6 +999,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -878,6 +1014,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -891,6 +1029,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -904,6 +1044,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -917,6 +1059,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -930,6 +1074,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -943,6 +1089,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -956,6 +1104,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -969,6 +1119,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -982,6 +1134,8 @@
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -994,5 +1148,7 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersions.multiFile.trace.json b/tests/baselines/reference/typesVersions.multiFile.trace.json
index a3a19ff99f607..42f5b7cbf0fc3 100644
--- a/tests/baselines/reference/typesVersions.multiFile.trace.json
+++ b/tests/baselines/reference/typesVersions.multiFile.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'ext' from '/.src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'ext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +35,12 @@
     "File '/.src/node_modules/ext/ts3.1/other.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/.src/node_modules/ext/ts3.1/other.d.ts', result '/.src/node_modules/ext/ts3.1/other.d.ts'.",
     "======== Module name 'ext/other' was successfully resolved to '/.src/node_modules/ext/ts3.1/other.d.ts' with Package ID 'ext/ts3.1/other.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist according to earlier cached lookups.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +53,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +67,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +81,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +95,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +109,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,6 +123,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -117,6 +137,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,6 +151,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -141,6 +165,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -153,6 +179,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -165,6 +193,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -177,6 +207,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -189,6 +221,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -201,6 +235,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -213,6 +249,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -225,6 +263,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -237,6 +277,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -249,6 +291,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -261,6 +305,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -273,6 +319,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -285,6 +333,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -297,6 +347,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -309,6 +361,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -321,6 +375,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -333,6 +389,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -345,6 +403,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -357,6 +417,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -369,6 +431,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -381,6 +445,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -393,6 +459,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -405,6 +473,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -417,6 +487,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -429,6 +501,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -441,6 +515,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -453,6 +529,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -465,6 +543,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -477,6 +557,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -489,6 +571,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -501,6 +585,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -513,6 +599,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -525,6 +613,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -537,6 +627,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -549,6 +641,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -561,6 +655,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -573,6 +669,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -585,6 +683,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -597,6 +697,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -609,6 +711,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -621,6 +725,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -633,6 +739,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -645,6 +753,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -657,6 +767,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -669,6 +781,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -681,6 +795,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -693,6 +809,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -705,6 +823,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -717,6 +837,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -729,6 +851,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -741,6 +865,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -753,6 +879,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -765,6 +893,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -777,6 +907,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -789,6 +921,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -801,6 +935,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -813,6 +949,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -825,6 +963,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -837,6 +977,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -849,6 +991,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -861,6 +1005,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -873,6 +1019,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -885,6 +1033,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -897,6 +1047,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -909,6 +1061,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -921,6 +1075,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -932,5 +1088,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
index 14a89f279ff35..d1db5bcce72c1 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'ext' from '/.src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'ext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -72,6 +74,10 @@
     "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name 'ext/other' was not resolved. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +90,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -96,6 +104,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -108,6 +118,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -120,6 +132,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -132,6 +146,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -144,6 +160,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -156,6 +174,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -168,6 +188,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -180,6 +202,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -192,6 +216,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -204,6 +230,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -216,6 +244,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -228,6 +258,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -240,6 +272,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -252,6 +286,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -264,6 +300,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -276,6 +314,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -288,6 +328,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -300,6 +342,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -312,6 +356,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -324,6 +370,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -336,6 +384,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -348,6 +398,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -360,6 +412,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -372,6 +426,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -384,6 +440,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -396,6 +454,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -408,6 +468,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -420,6 +482,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -432,6 +496,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -444,6 +510,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -456,6 +524,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -468,6 +538,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -480,6 +552,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -492,6 +566,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -504,6 +580,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -516,6 +594,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -528,6 +608,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -540,6 +622,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -552,6 +636,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -564,6 +650,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -576,6 +664,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -588,6 +678,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -600,6 +692,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -612,6 +706,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -624,6 +720,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -636,6 +734,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -648,6 +748,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -660,6 +762,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -672,6 +776,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -684,6 +790,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -696,6 +804,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -708,6 +818,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -720,6 +832,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -732,6 +846,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -744,6 +860,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -756,6 +874,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -768,6 +888,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -780,6 +902,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -792,6 +916,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -804,6 +930,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -816,6 +944,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -828,6 +958,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -840,6 +972,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -852,6 +986,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -864,6 +1000,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -876,6 +1014,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -888,6 +1028,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -900,6 +1042,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -912,6 +1056,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -924,6 +1070,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -936,6 +1084,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -948,6 +1098,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -960,6 +1112,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -971,5 +1125,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
index a3a19ff99f607..42f5b7cbf0fc3 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'ext' from '/.src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'ext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +35,12 @@
     "File '/.src/node_modules/ext/ts3.1/other.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/.src/node_modules/ext/ts3.1/other.d.ts', result '/.src/node_modules/ext/ts3.1/other.d.ts'.",
     "======== Module name 'ext/other' was successfully resolved to '/.src/node_modules/ext/ts3.1/other.d.ts' with Package ID 'ext/ts3.1/other.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist according to earlier cached lookups.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -45,6 +53,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -57,6 +67,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -69,6 +81,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -81,6 +95,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -93,6 +109,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -105,6 +123,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -117,6 +137,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -129,6 +151,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -141,6 +165,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -153,6 +179,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -165,6 +193,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -177,6 +207,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -189,6 +221,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -201,6 +235,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -213,6 +249,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -225,6 +263,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -237,6 +277,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -249,6 +291,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -261,6 +305,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -273,6 +319,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -285,6 +333,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -297,6 +347,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -309,6 +361,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -321,6 +375,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -333,6 +389,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -345,6 +403,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -357,6 +417,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -369,6 +431,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -381,6 +445,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -393,6 +459,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -405,6 +473,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -417,6 +487,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -429,6 +501,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -441,6 +515,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -453,6 +529,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -465,6 +543,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -477,6 +557,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -489,6 +571,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -501,6 +585,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -513,6 +599,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -525,6 +613,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -537,6 +627,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -549,6 +641,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -561,6 +655,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -573,6 +669,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -585,6 +683,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -597,6 +697,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -609,6 +711,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -621,6 +725,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -633,6 +739,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -645,6 +753,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -657,6 +767,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -669,6 +781,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -681,6 +795,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -693,6 +809,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -705,6 +823,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -717,6 +837,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -729,6 +851,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -741,6 +865,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -753,6 +879,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -765,6 +893,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -777,6 +907,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -789,6 +921,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -801,6 +935,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -813,6 +949,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -825,6 +963,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -837,6 +977,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -849,6 +991,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -861,6 +1005,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -873,6 +1019,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -885,6 +1033,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -897,6 +1047,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -909,6 +1061,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -921,6 +1075,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -932,5 +1088,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
index e328baa0c07e0..774007ccd8a66 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'ext' from '/.src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'ext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -33,6 +35,8 @@
     "File '/.src/node_modules/ext/ts3.1/other.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/.src/node_modules/ext/ts3.1/other.d.ts', result '/.src/node_modules/ext/ts3.1/other.d.ts'.",
     "======== Module name 'ext/other' was successfully resolved to '/.src/node_modules/ext/ts3.1/other.d.ts' with Package ID 'ext/ts3.1/other.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
     "======== Resolving module '../' from '/.src/node_modules/ext/ts3.1/index.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/.src/node_modules/ext/', target file types: TypeScript, Declaration.",
@@ -47,6 +51,8 @@
     "File '/.src/node_modules/ext/ts3.1/index.tsx' does not exist.",
     "File '/.src/node_modules/ext/ts3.1/index.d.ts' exists - use it as a name resolution result.",
     "======== Module name '../' was successfully resolved to '/.src/node_modules/ext/ts3.1/index.d.ts' with Package ID 'ext/s3.1/index.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist according to earlier cached lookups.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
     "======== Resolving module '../other' from '/.src/node_modules/ext/ts3.1/other.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/.src/node_modules/ext/other', target file types: TypeScript, Declaration.",
@@ -55,6 +61,9 @@
     "File '/.src/node_modules/ext/other.d.ts' exists - use it as a name resolution result.",
     "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
     "======== Module name '../other' was successfully resolved to '/.src/node_modules/ext/other.d.ts' with Package ID 'ext/other.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +76,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -79,6 +90,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -91,6 +104,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -103,6 +118,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -115,6 +132,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -127,6 +146,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -139,6 +160,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -151,6 +174,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -163,6 +188,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -175,6 +202,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -187,6 +216,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -199,6 +230,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -211,6 +244,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -223,6 +258,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -235,6 +272,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -247,6 +286,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -259,6 +300,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -271,6 +314,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -283,6 +328,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -295,6 +342,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -307,6 +356,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -319,6 +370,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -331,6 +384,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -343,6 +398,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -355,6 +412,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -367,6 +426,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -379,6 +440,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -391,6 +454,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -403,6 +468,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -415,6 +482,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -427,6 +496,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -439,6 +510,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -451,6 +524,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -463,6 +538,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -475,6 +552,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -487,6 +566,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -499,6 +580,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -511,6 +594,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -523,6 +608,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -535,6 +622,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -547,6 +636,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -559,6 +650,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -571,6 +664,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -583,6 +678,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -595,6 +692,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -607,6 +706,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -619,6 +720,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -631,6 +734,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -643,6 +748,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -655,6 +762,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -667,6 +776,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -679,6 +790,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -691,6 +804,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -703,6 +818,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -715,6 +832,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -727,6 +846,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -739,6 +860,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -751,6 +874,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -763,6 +888,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -775,6 +902,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -787,6 +916,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -799,6 +930,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -811,6 +944,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -823,6 +958,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -835,6 +972,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -847,6 +986,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -859,6 +1000,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -871,6 +1014,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -883,6 +1028,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -895,6 +1042,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -907,6 +1056,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -919,6 +1070,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -931,6 +1084,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -943,6 +1098,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -954,5 +1111,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
index dc4afef9d7e57..74258268ae864 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
@@ -1,4 +1,6 @@
 [
+    "File '/.src/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'ext' from '/.src/main.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'ext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -31,6 +33,8 @@
     "File '/.src/node_modules/ext/other.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/.src/node_modules/ext/other.d.ts', result '/.src/node_modules/ext/other.d.ts'.",
     "======== Module name 'ext/other' was successfully resolved to '/.src/node_modules/ext/other.d.ts' with Package ID 'ext/other.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/ts3.1/package.json' does not exist.",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
     "======== Resolving module '../other' from '/.src/node_modules/ext/ts3.1/index.d.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module as file / folder, candidate module location '/.src/node_modules/ext/other', target file types: TypeScript, Declaration.",
@@ -39,6 +43,9 @@
     "File '/.src/node_modules/ext/other.d.ts' exists - use it as a name resolution result.",
     "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
     "======== Module name '../other' was successfully resolved to '/.src/node_modules/ext/other.d.ts' with Package ID 'ext/other.d.ts@1.0.0'. ========",
+    "File '/.src/node_modules/ext/package.json' exists according to earlier cached lookups.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext' from '/.src/__lib_node_modules_lookup_lib.esnext.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +58,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023' from '/.src/__lib_node_modules_lookup_lib.es2023.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -63,6 +72,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022' from '/.src/__lib_node_modules_lookup_lib.es2022.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,6 +86,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021' from '/.src/__lib_node_modules_lookup_lib.es2021.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -87,6 +100,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020' from '/.src/__lib_node_modules_lookup_lib.es2020.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -99,6 +114,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019' from '/.src/__lib_node_modules_lookup_lib.es2019.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -111,6 +128,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018' from '/.src/__lib_node_modules_lookup_lib.es2018.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -123,6 +142,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017' from '/.src/__lib_node_modules_lookup_lib.es2017.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -135,6 +156,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016' from '/.src/__lib_node_modules_lookup_lib.es2016.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -147,6 +170,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015' from '/.src/__lib_node_modules_lookup_lib.es2015.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -159,6 +184,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/.src/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -171,6 +198,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/.src/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -183,6 +212,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/.src/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -195,6 +226,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/core' from '/.src/__lib_node_modules_lookup_lib.es2015.core.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/core' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -207,6 +240,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/core' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/collection' from '/.src/__lib_node_modules_lookup_lib.es2015.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -219,6 +254,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/iterable' from '/.src/__lib_node_modules_lookup_lib.es2015.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -231,6 +268,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -243,6 +282,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/generator' from '/.src/__lib_node_modules_lookup_lib.es2015.generator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/generator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -255,6 +296,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/generator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/promise' from '/.src/__lib_node_modules_lookup_lib.es2015.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -267,6 +310,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/proxy' from '/.src/__lib_node_modules_lookup_lib.es2015.proxy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/proxy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -279,6 +324,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/proxy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/reflect' from '/.src/__lib_node_modules_lookup_lib.es2015.reflect.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/reflect' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -291,6 +338,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/reflect' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2015/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2015.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2015/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -303,6 +352,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2015/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/array-include' from '/.src/__lib_node_modules_lookup_lib.es2016.array.include.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/array-include' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -315,6 +366,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/array-include' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2016/intl' from '/.src/__lib_node_modules_lookup_lib.es2016.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2016/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -327,6 +380,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2016/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/object' from '/.src/__lib_node_modules_lookup_lib.es2017.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -339,6 +394,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2017.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -351,6 +408,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/string' from '/.src/__lib_node_modules_lookup_lib.es2017.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -363,6 +422,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/intl' from '/.src/__lib_node_modules_lookup_lib.es2017.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -375,6 +436,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/typedarrays' from '/.src/__lib_node_modules_lookup_lib.es2017.typedarrays.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/typedarrays' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -387,6 +450,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/typedarrays' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2017/date' from '/.src/__lib_node_modules_lookup_lib.es2017.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2017/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -399,6 +464,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2017/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asynciterable' from '/.src/__lib_node_modules_lookup_lib.es2018.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -411,6 +478,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/asyncgenerator' from '/.src/__lib_node_modules_lookup_lib.es2018.asyncgenerator.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/asyncgenerator' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -423,6 +492,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/asyncgenerator' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/promise' from '/.src/__lib_node_modules_lookup_lib.es2018.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -435,6 +506,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/regexp' from '/.src/__lib_node_modules_lookup_lib.es2018.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -447,6 +520,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2018/intl' from '/.src/__lib_node_modules_lookup_lib.es2018.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2018/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -459,6 +534,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2018/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/array' from '/.src/__lib_node_modules_lookup_lib.es2019.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -471,6 +548,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/object' from '/.src/__lib_node_modules_lookup_lib.es2019.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -483,6 +562,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/string' from '/.src/__lib_node_modules_lookup_lib.es2019.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -495,6 +576,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/symbol' from '/.src/__lib_node_modules_lookup_lib.es2019.symbol.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/symbol' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -507,6 +590,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/symbol' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2019/intl' from '/.src/__lib_node_modules_lookup_lib.es2019.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2019/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -519,6 +604,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2019/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/bigint' from '/.src/__lib_node_modules_lookup_lib.es2020.bigint.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/bigint' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -531,6 +618,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/bigint' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/intl' from '/.src/__lib_node_modules_lookup_lib.es2020.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -543,6 +632,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/date' from '/.src/__lib_node_modules_lookup_lib.es2020.date.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/date' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -555,6 +646,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/date' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/number' from '/.src/__lib_node_modules_lookup_lib.es2020.number.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/number' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -567,6 +660,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/number' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/promise' from '/.src/__lib_node_modules_lookup_lib.es2020.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -579,6 +674,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2020.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -591,6 +688,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/string' from '/.src/__lib_node_modules_lookup_lib.es2020.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -603,6 +702,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2020/symbol-wellknown' from '/.src/__lib_node_modules_lookup_lib.es2020.symbol.wellknown.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2020/symbol-wellknown' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -615,6 +716,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2020/symbol-wellknown' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/promise' from '/.src/__lib_node_modules_lookup_lib.es2021.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -627,6 +730,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/string' from '/.src/__lib_node_modules_lookup_lib.es2021.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -639,6 +744,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/weakref' from '/.src/__lib_node_modules_lookup_lib.es2021.weakref.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/weakref' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -651,6 +758,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/weakref' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2021/intl' from '/.src/__lib_node_modules_lookup_lib.es2021.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2021/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -663,6 +772,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2021/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/array' from '/.src/__lib_node_modules_lookup_lib.es2022.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -675,6 +786,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/error' from '/.src/__lib_node_modules_lookup_lib.es2022.error.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/error' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -687,6 +800,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/error' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/intl' from '/.src/__lib_node_modules_lookup_lib.es2022.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -699,6 +814,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/object' from '/.src/__lib_node_modules_lookup_lib.es2022.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -711,6 +828,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/sharedmemory' from '/.src/__lib_node_modules_lookup_lib.es2022.sharedmemory.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/sharedmemory' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -723,6 +842,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/sharedmemory' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/string' from '/.src/__lib_node_modules_lookup_lib.es2022.string.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -735,6 +856,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/string' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2022/regexp' from '/.src/__lib_node_modules_lookup_lib.es2022.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2022/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -747,6 +870,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2022/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/array' from '/.src/__lib_node_modules_lookup_lib.es2023.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -759,6 +884,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/collection' from '/.src/__lib_node_modules_lookup_lib.es2023.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -771,6 +898,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es2023/intl' from '/.src/__lib_node_modules_lookup_lib.es2023.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es2023/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -783,6 +912,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-es2023/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/intl' from '/.src/__lib_node_modules_lookup_lib.esnext.intl.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/intl' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -795,6 +926,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/intl' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/decorators' from '/.src/__lib_node_modules_lookup_lib.esnext.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -807,6 +940,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/disposable' from '/.src/__lib_node_modules_lookup_lib.esnext.disposable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/disposable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -819,6 +954,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/disposable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/promise' from '/.src/__lib_node_modules_lookup_lib.esnext.promise.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/promise' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -831,6 +968,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/promise' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/object' from '/.src/__lib_node_modules_lookup_lib.esnext.object.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/object' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -843,6 +982,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/object' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/collection' from '/.src/__lib_node_modules_lookup_lib.esnext.collection.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/collection' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -855,6 +996,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/collection' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/array' from '/.src/__lib_node_modules_lookup_lib.esnext.array.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/array' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -867,6 +1010,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/array' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-esnext/regexp' from '/.src/__lib_node_modules_lookup_lib.esnext.regexp.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-esnext/regexp' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -879,6 +1024,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -891,6 +1038,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/.src/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -903,6 +1052,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/.src/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -915,6 +1066,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/iterable' from '/.src/__lib_node_modules_lookup_lib.dom.iterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/iterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -927,6 +1080,8 @@
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
     "======== Module name '@typescript/lib-dom/iterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom/asynciterable' from '/.src/__lib_node_modules_lookup_lib.dom.asynciterable.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -938,5 +1093,7 @@
     "Loading module '@typescript/lib-dom/asynciterable' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "Directory '/node_modules' does not exist, skipping all lookups in it.",
-    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========"
+    "======== Module name '@typescript/lib-dom/asynciterable' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typingsLookup1.trace.json b/tests/baselines/reference/typingsLookup1.trace.json
index ca05094980119..34f0b54b8debb 100644
--- a/tests/baselines/reference/typingsLookup1.trace.json
+++ b/tests/baselines/reference/typingsLookup1.trace.json
@@ -1,13 +1,20 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/a.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "File '/node_modules/@types/jquery/package.json' does not exist.",
     "File '/node_modules/@types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/jquery/index.d.ts', result '/node_modules/@types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/node_modules/@types/jquery/index.d.ts', primary: true. ========",
+    "File '/node_modules/@types/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'jquery' was found in cache from location '/'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/node_modules/@types/jquery/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -17,6 +24,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +35,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +45,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +56,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +66,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,5 +76,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typingsLookup2.trace.json b/tests/baselines/reference/typingsLookup2.trace.json
index 4433ceee06a74..d28412e8563b4 100644
--- a/tests/baselines/reference/typingsLookup2.trace.json
+++ b/tests/baselines/reference/typingsLookup2.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/package.json' does not exist.",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -8,6 +11,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -17,6 +22,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -25,6 +32,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +43,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -42,6 +53,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -50,5 +63,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typingsLookup3.trace.json b/tests/baselines/reference/typingsLookup3.trace.json
index ca05094980119..34f0b54b8debb 100644
--- a/tests/baselines/reference/typingsLookup3.trace.json
+++ b/tests/baselines/reference/typingsLookup3.trace.json
@@ -1,13 +1,20 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving type reference directive 'jquery', containing file '/a.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "File '/node_modules/@types/jquery/package.json' does not exist.",
     "File '/node_modules/@types/jquery/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/jquery/index.d.ts', result '/node_modules/@types/jquery/index.d.ts'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/node_modules/@types/jquery/index.d.ts', primary: true. ========",
+    "File '/node_modules/@types/jquery/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/__inferred type names__.ts'. ========",
     "Resolution for type reference directive 'jquery' was found in cache from location '/'.",
     "======== Type reference directive 'jquery' was successfully resolved to '/node_modules/@types/jquery/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -17,6 +24,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -26,6 +35,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -34,6 +45,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -43,6 +56,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -51,6 +66,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -59,5 +76,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typingsLookup4.trace.json b/tests/baselines/reference/typingsLookup4.trace.json
index 746760f576fd5..1aa96de5eadde 100644
--- a/tests/baselines/reference/typingsLookup4.trace.json
+++ b/tests/baselines/reference/typingsLookup4.trace.json
@@ -1,4 +1,5 @@
 [
+    "File '/package.json' does not exist.",
     "======== Resolving module 'jquery' from '/a.ts'. ========",
     "Module resolution kind is not specified, using 'Node10'.",
     "Loading module 'jquery' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -64,6 +65,11 @@
     "File '/node_modules/@types/mquery/mquery/index.tsx' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/mquery/mquery/index.tsx', result '/node_modules/@types/mquery/mquery/index.tsx'.",
     "======== Module name 'mquery' was successfully resolved to '/node_modules/@types/mquery/mquery/index.tsx'. ========",
+    "File '/node_modules/@types/jquery/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/@types/kquery/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/@types/lquery/package.json' exists according to earlier cached lookups.",
+    "File '/node_modules/@types/mquery/mquery/package.json' does not exist.",
+    "File '/node_modules/@types/mquery/package.json' exists according to earlier cached lookups.",
     "======== Resolving type reference directive 'jquery', containing file '/__inferred type names__.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "File '/node_modules/@types/jquery/package.json' exists according to earlier cached lookups.",
@@ -101,6 +107,8 @@
     "File '/node_modules/@types/mquery/mquery/index.tsx' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/mquery/mquery/index.tsx', result '/node_modules/@types/mquery/mquery/index.tsx'.",
     "======== Type reference directive 'mquery' was successfully resolved to '/node_modules/@types/mquery/mquery/index.tsx', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -110,6 +118,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -119,6 +129,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -127,6 +139,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -136,6 +150,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -144,6 +160,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -152,5 +170,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/baselines/reference/typingsLookupAmd.trace.json b/tests/baselines/reference/typingsLookupAmd.trace.json
index a60e37c92bea3..7e90aacb1ba5e 100644
--- a/tests/baselines/reference/typingsLookupAmd.trace.json
+++ b/tests/baselines/reference/typingsLookupAmd.trace.json
@@ -1,4 +1,7 @@
 [
+    "File '/x/y/package.json' does not exist.",
+    "File '/x/package.json' does not exist.",
+    "File '/package.json' does not exist.",
     "======== Resolving module 'b' from '/x/y/foo.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "File '/x/y/b.ts' does not exist.",
@@ -17,6 +20,11 @@
     "File '/x/node_modules/@types/b/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/x/node_modules/@types/b/index.d.ts', result '/x/node_modules/@types/b/index.d.ts'.",
     "======== Module name 'b' was successfully resolved to '/x/node_modules/@types/b/index.d.ts'. ========",
+    "File '/x/node_modules/@types/b/package.json' does not exist according to earlier cached lookups.",
+    "File '/x/node_modules/@types/package.json' does not exist.",
+    "File '/x/node_modules/package.json' does not exist.",
+    "File '/x/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module 'a' from '/x/node_modules/@types/b/index.d.ts'. ========",
     "Module resolution kind is not specified, using 'Classic'.",
     "File '/x/node_modules/@types/b/a.ts' does not exist.",
@@ -43,12 +51,18 @@
     "File '/node_modules/@types/a/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/a/index.d.ts', result '/node_modules/@types/a/index.d.ts'.",
     "======== Module name 'a' was successfully resolved to '/node_modules/@types/a/index.d.ts'. ========",
+    "File '/node_modules/@types/a/package.json' does not exist according to earlier cached lookups.",
+    "File '/node_modules/@types/package.json' does not exist.",
+    "File '/node_modules/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving type reference directive 'a', containing file '/__inferred type names__.ts', root directory '/node_modules/@types'. ========",
     "Resolving with primary search path '/node_modules/@types'.",
     "File '/node_modules/@types/a/package.json' does not exist according to earlier cached lookups.",
     "File '/node_modules/@types/a/index.d.ts' exists - use it as a name resolution result.",
     "Resolving real path for '/node_modules/@types/a/index.d.ts', result '/node_modules/@types/a/index.d.ts'.",
     "======== Type reference directive 'a' was successfully resolved to '/node_modules/@types/a/index.d.ts', primary: true. ========",
+    "File '/.ts/package.json' does not exist.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-es5' from '/__lib_node_modules_lookup_lib.es5.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -58,6 +72,8 @@
     "Loading module '@typescript/lib-es5' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-es5' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators' from '/__lib_node_modules_lookup_lib.decorators.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -67,6 +83,8 @@
     "Loading module '@typescript/lib-decorators' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-decorators/legacy' from '/__lib_node_modules_lookup_lib.decorators.legacy.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -75,6 +93,8 @@
     "Loading module '@typescript/lib-decorators/legacy' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-decorators/legacy' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-dom' from '/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -84,6 +104,8 @@
     "Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-dom' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-webworker/importscripts' from '/__lib_node_modules_lookup_lib.webworker.importscripts.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -92,6 +114,8 @@
     "Loading module '@typescript/lib-webworker/importscripts' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
     "======== Module name '@typescript/lib-webworker/importscripts' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups.",
     "======== Resolving module '@typescript/lib-scripthost' from '/__lib_node_modules_lookup_lib.scripthost.d.ts__.ts'. ========",
     "Explicitly specified module resolution kind: 'Node10'.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: TypeScript, Declaration.",
@@ -100,5 +124,7 @@
     "File '/node_modules/@types/typescript__lib-scripthost.d.ts' does not exist.",
     "Loading module '@typescript/lib-scripthost' from 'node_modules' folder, target file types: JavaScript.",
     "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
-    "======== Module name '@typescript/lib-scripthost' was not resolved. ========"
+    "======== Module name '@typescript/lib-scripthost' was not resolved. ========",
+    "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+    "File '/package.json' does not exist according to earlier cached lookups."
 ]
\ No newline at end of file
diff --git a/tests/cases/compiler/esmNoSynthesizedDefault.ts b/tests/cases/compiler/esmNoSynthesizedDefault.ts
new file mode 100644
index 0000000000000..17fcea5f883c2
--- /dev/null
+++ b/tests/cases/compiler/esmNoSynthesizedDefault.ts
@@ -0,0 +1,18 @@
+// @target: esnext
+// @module: preserve, esnext
+// @moduleResolution: bundler
+
+// @Filename: /node_modules/mdast-util-to-string/package.json
+{ "type": "module" }
+
+// @Filename: /node_modules/mdast-util-to-string/index.d.ts
+export function toString(): string;
+
+// @Filename: /index.ts
+import mdast, { toString } from 'mdast-util-to-string';
+mdast;
+mdast.toString();
+
+const mdast2 = await import('mdast-util-to-string');
+mdast2.toString();
+mdast2.default;
diff --git a/tests/cases/compiler/impliedNodeFormatEmit1.ts b/tests/cases/compiler/impliedNodeFormatEmit1.ts
new file mode 100644
index 0000000000000..6fd41c8c32ac4
--- /dev/null
+++ b/tests/cases/compiler/impliedNodeFormatEmit1.ts
@@ -0,0 +1,39 @@
+// @allowJs: true
+// @checkJs: true
+// @outDir: dist
+// @module: esnext, commonjs, amd, system, umd, preserve
+// @moduleResolution: bundler
+// @noTypesAndSymbols: true
+
+// @Filename: /a.ts
+export const _ = 0;
+
+// @Filename: /b.mts
+export const _ = 0;
+
+// @Filename: /c.cts
+export const _ = 0;
+
+// @Filename: /d.js
+export const _ = 0;
+
+// @Filename: /e.mjs
+export const _ = 0;
+
+// @Filename: /f.mjs
+export const _ = 0;
+
+// @Filename: /g.ts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /h.mts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /i.cts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /dummy.ts
+export {};
diff --git a/tests/cases/compiler/impliedNodeFormatEmit2.ts b/tests/cases/compiler/impliedNodeFormatEmit2.ts
new file mode 100644
index 0000000000000..851fbd748a790
--- /dev/null
+++ b/tests/cases/compiler/impliedNodeFormatEmit2.ts
@@ -0,0 +1,42 @@
+// @allowJs: true
+// @checkJs: true
+// @outDir: dist
+// @module: esnext, commonjs, preserve
+// @moduleResolution: bundler
+// @noTypesAndSymbols: true
+
+// @Filename: /package.json
+{}
+
+// @Filename: /a.ts
+export const _ = 0;
+
+// @Filename: /b.mts
+export const _ = 0;
+
+// @Filename: /c.cts
+export const _ = 0;
+
+// @Filename: /d.js
+export const _ = 0;
+
+// @Filename: /e.mjs
+export const _ = 0;
+
+// @Filename: /f.mjs
+export const _ = 0;
+
+// @Filename: /g.ts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /h.mts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /i.cts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /dummy.ts
+export {};
diff --git a/tests/cases/compiler/impliedNodeFormatEmit3.ts b/tests/cases/compiler/impliedNodeFormatEmit3.ts
new file mode 100644
index 0000000000000..459d542e26e0d
--- /dev/null
+++ b/tests/cases/compiler/impliedNodeFormatEmit3.ts
@@ -0,0 +1,44 @@
+// @allowJs: true
+// @checkJs: true
+// @outDir: dist
+// @module: esnext, commonjs, preserve
+// @moduleResolution: bundler
+// @noTypesAndSymbols: true
+
+// @Filename: /package.json
+{
+  "type": "module"
+}
+
+// @Filename: /a.ts
+export const _ = 0;
+
+// @Filename: /b.mts
+export const _ = 0;
+
+// @Filename: /c.cts
+export const _ = 0;
+
+// @Filename: /d.js
+export const _ = 0;
+
+// @Filename: /e.mjs
+export const _ = 0;
+
+// @Filename: /f.mjs
+export const _ = 0;
+
+// @Filename: /g.ts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /h.mts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /i.cts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /dummy.ts
+export {};
diff --git a/tests/cases/compiler/impliedNodeFormatEmit4.ts b/tests/cases/compiler/impliedNodeFormatEmit4.ts
new file mode 100644
index 0000000000000..769510c6c0ce9
--- /dev/null
+++ b/tests/cases/compiler/impliedNodeFormatEmit4.ts
@@ -0,0 +1,44 @@
+// @allowJs: true
+// @checkJs: true
+// @outDir: dist
+// @module: esnext, commonjs, preserve
+// @moduleResolution: bundler
+// @noTypesAndSymbols: true
+
+// @Filename: /package.json
+{
+  "type": "commonjs"
+}
+
+// @Filename: /a.ts
+export const _ = 0;
+
+// @Filename: /b.mts
+export const _ = 0;
+
+// @Filename: /c.cts
+export const _ = 0;
+
+// @Filename: /d.js
+export const _ = 0;
+
+// @Filename: /e.mjs
+export const _ = 0;
+
+// @Filename: /f.mjs
+export const _ = 0;
+
+// @Filename: /g.ts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /h.mts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /i.cts
+import {} from "./a";
+import a = require("./a");
+
+// @Filename: /dummy.ts
+export {};
diff --git a/tests/cases/compiler/impliedNodeFormatInterop1.ts b/tests/cases/compiler/impliedNodeFormatInterop1.ts
new file mode 100644
index 0000000000000..c4e18c0ddc0e9
--- /dev/null
+++ b/tests/cases/compiler/impliedNodeFormatInterop1.ts
@@ -0,0 +1,27 @@
+// @module: es2020
+// @moduleResolution: node10
+// @esModuleInterop: true
+
+// @Filename: /node_modules/highlight.js/package.json
+{
+  "name": "highlight.js",
+  "type": "commonjs",
+  "types": "index.d.ts"
+}
+
+// @Filename: /node_modules/highlight.js/index.d.ts
+declare module "highlight.js" {
+  export interface HighlightAPI {
+    highlight(code: string): string;
+  }
+  const hljs: HighlightAPI;
+  export default hljs;
+}
+
+// @Filename: /node_modules/highlight.js/lib/core.d.ts
+import hljs from "highlight.js";
+export default hljs;
+
+// @Filename: /index.ts
+import hljs from "highlight.js/lib/core";
+hljs.highlight("code");
diff --git a/tests/cases/compiler/modulePreserve4.ts b/tests/cases/compiler/modulePreserve4.ts
index 9eabe664bb88c..9a7014852eefa 100644
--- a/tests/cases/compiler/modulePreserve4.ts
+++ b/tests/cases/compiler/modulePreserve4.ts
@@ -106,5 +106,8 @@ const f2 = require("./f.cjs"); // { default: 0 }
 import g1 from "./g"; // { default: 0 }
 const g2 = require("./g"); // { default: 0 }
 
+// @Filename: /main4.cjs
+exports.x = require("./g");
+
 // @Filename: /dummy.ts
 export {}; // Silly test harness
diff --git a/tests/cases/conformance/moduleResolution/conditionalExportsResolutionFallback.ts b/tests/cases/conformance/moduleResolution/conditionalExportsResolutionFallback.ts
index d9a1d480b8ef3..26fe08e88fb11 100644
--- a/tests/cases/conformance/moduleResolution/conditionalExportsResolutionFallback.ts
+++ b/tests/cases/conformance/moduleResolution/conditionalExportsResolutionFallback.ts
@@ -1,3 +1,4 @@
+// @module: esnext
 // @moduleResolution: node16,nodenext,bundler
 // @traceResolution: true
 // @allowJs: true
diff --git a/tests/cases/conformance/moduleResolution/customConditions.ts b/tests/cases/conformance/moduleResolution/customConditions.ts
index 47fb048ac28bf..0533574c6c230 100644
--- a/tests/cases/conformance/moduleResolution/customConditions.ts
+++ b/tests/cases/conformance/moduleResolution/customConditions.ts
@@ -1,3 +1,4 @@
+// @module: preserve
 // @moduleResolution: bundler
 // @customConditions: webpack, browser
 // @resolvePackageJsonExports: true, false
diff --git a/tests/cases/conformance/moduleResolution/resolvesWithoutExportsDiagnostic1.ts b/tests/cases/conformance/moduleResolution/resolvesWithoutExportsDiagnostic1.ts
index d01bb47a75ca8..57430c902655d 100644
--- a/tests/cases/conformance/moduleResolution/resolvesWithoutExportsDiagnostic1.ts
+++ b/tests/cases/conformance/moduleResolution/resolvesWithoutExportsDiagnostic1.ts
@@ -1,3 +1,4 @@
+// @module: preserve
 // @moduleResolution: bundler,node16
 // @strict: true
 // @noTypesAndSymbols: true